MMM Classics Year 14: MMM #S131-140 the First Fifteen Years December 1999 - November 2000 Several Topics and Arti- This Year, We Take an in Cles Stood out This Year

Total Page:16

File Type:pdf, Size:1020Kb

MMM Classics Year 14: MMM #S131-140 the First Fifteen Years December 1999 - November 2000 Several Topics and Arti- This Year, We Take an in Cles Stood out This Year MMM Classics Year 14: MMM #s131-140 The First Fifteen Years December 1999 - November 2000 Several topics and arti- This year, we take an in cles stood out this year. We have depth look at the wellsprings of long pointed out that if we are to Martian Culture. The severe build a resource-using industrial climate, the monotonous color frontier civilization on the Moon, scheme, minor and greater our major sites will need to be differences in the pace of time, along highland/mare “coasts.” and the remoteness of Mars will The north coast of Mare Frigoris, have a profound effect. Those Sea of Cold, is closer than any to who survive and thrive will be potential coldtrap water ice among the best. reserves, just 200 some miles to Here too, the developer the north. Roads will follow the will play a vital role in creation path of easiest traverse and thus of “improved” real estate, but we help determine where towns are can do more now to “make Mars built The Lunar Developer will more valuable and attrac-tive to be essential, giving barren “unim- prospective pioneers. proved” land real value. Cast The sight of Utah’s San Basalt is likely to be among the Rafael Swell, on a Greyhound first industries. trip to the Moon Society’s Foun- The evolution of home ding Convention in Las Vegas, rule and pioneer rights receives gave us an idea of how regolith added attention. The Moon will shielding mounds on the Moon be attractive to those who want to and Mars, could be “architec- set up “Intentional Commu- turally sculpted” to have a much nities.” Several people discuss more attractive presence, adding lunar currency. to the beauty of the lunar or Other Moon-focused Martian terrain. topics are “postage” and “mail” MMM did not neglect the (not email), golfing, and “tramp rest of the Solar System this year: art” as a likely development. we took up again the potential for Sulfur lamps emerge as balloon-exploration of Venus, a most efficient contender for Titan, Jupiter. nightspan lighting needs. In July, this year, the new Lavatubes may also be more broadly based Moon made more attractive by deve- Society took over chapters and lopers. Skylight domes above member services from Artemis them are an attractive option. Society International, and thus Lunar tourism will be became MMM’s largest client. A upon us sooner than we think lot was happening with other with early “loop the Moon” non- space organizations this year. The landing tours. Eventually surface new Mars Arctic Research resorts will follow. Station was erected. Moon Miners’ Manifesto Classics - Year 14 - Republished July 2006 - Page 1 the star-whispers in silence. MMM #131 - DEC 1999 The power beaming company wants a pair of east and west limb sites taking turns in the untempered sunlight. The helium-3 miner wants to be in the middle of the largest of the richer he-3 fields. Those fixated on water-ice, as if industry could be built on that commodity alone, or who could care less about industry so long as they can burn the ice all up as cryogenic rocket fuels, will want a lunar polar site, as will those appar- ently intimidated by the Moon’s surface temperature swings or its 14.75 day long nightspans. With both Clementine and Lunar Prospector targeting Site for a Major Settlement fed by Polar Ice the poles, we have seen a few pontifical announcements of late of “the” site being identified first at the South, then at the WANTED: “a Mare/Highlands coastal site, with North Pole of the Moon. All such announcements presuppose access to both major suites of lunar materials, with proximity unexamined and very questionable assumptions, however to abundant sheltered volume in lavatubes, and within easy common. reach of polar icefields.” Seems like a tall order, but Mare Frigoris (1) at 60° N, central nearside, may fill the bill. Mare The Pregnant Moonbase Imbrium (3) lies to the south, with easy access through the It is impossible to reach consensus on this point as the Alpine Valley (arrow). The craters Plato (2) and Aristotle (4) debate is controlled largely by temperament. Those who look are prominent. See below. for a single lunar outpost and do not see the sense or feasibility of further development can quit reading now. So can those who see lunar outposts as a government affair, in the mold of what Where to Set up Shop? we have in Antarctica, or functioning as a university-govern- ment “National Lab” like Fermilab or Argonne or Los Alamos. Moonbase Site Selection Considerations For these persons, such a tomorrow is a daring, ambitious by Peter Kokh undertaking. It matters very much where and how we begin. We need to We choose instead to look beyond beginnings, to a deliberately pick a site and an outpost systems architecture global human presence on the Moon engaged in all kinds of that is pregnant with a broad, open-ended future. activity: scientific research; industry and commerce; tourism and recreation; and just plain living. From this point of view, it Of Apples and Oranges matters very much where and how we begin. We need to People who discuss and debate where on the Moon is deliberately pick a site and an outpost systems architecture that the most propitious place to set up a manned outpost risk is pregnant with this broader open-ended future. talking apples and oranges. Agreement on what we mean by “moonbase” is assumed without any justification. In fact, Nearly seventy years after Little America, we are still different people have very different dreams for the Moon, and very “stuck” in the same sterile paradigm in Antarctica. And different visions of how a first lunar outpost will develop. They there is little reason for optimism that we will outgrow the have differing appraisals of the uses for which the Moon is present self-limiting goals to our Antarctic presence anytime suitable. Participants in this debate also differ in the esteem in soon. Scientific research IS important, but it hardly exhausts which they hold science, industry, enterprise, tourism, the potential of a genuine human community. If we don’t want government, and eeks! - the common man, the stuff of settlers, such a restricted future for the Moon, we need to start with a alas. Academics and scientists, NASA bureaucrats, and different kind of beginning. development entrepreneurs are likely each to have widely • We need to locate where we can learn to deal with the incongruous views of what a moonbase should entail. Moon on its own terms. We need to resist establishing But if this is so, it should be clear that a consensus on ourselves in a thermal and diurnal ghetto in which we will an appropriate site is impossible. One site might be perfect for be unable to learn how to survive on the rest of the globe. a “Kilroy-type outpost”. We put an outpost on the Moon just to • We need to establish the main site where the bulk of the say we are there and not to do anything special except, of materials that we need are located, not near a small course, whatever science to which the location lends itself. So however essential fraction. we pick the place easiest and cheapest to set up. • We need to locate where protected expansion volume is The geologist could care less whether the site is readily accessible. “easy” to erect or maintain. He wants to be in the very center of • We need to locate at a natural crossroads site from which the greatest variety of Selenological enigmas awaiting a large part of the lunar surface is easily accessible. investigation. We need to be many places on the Moon doing many The radio astronomer and those engaging in S.E.T.I. things. We cannot, must not think of “a” or “the” moonbase or search programs will want a base in central farside to listen to lunar outpost, only of “the first”, second, and third or many. If Moon Miners’ Manifesto Classics - Year 14 - Republished July 2006 - Page 2 we want to establish a lunar economy, trade between a number They are the ideal situation for fabric inflatables likely to carry of outposts and settlements will be necessary. the brunt of early expansion prior to the development of lunar It is urgent that those who agree in general with the building materials and components. It is possible that lunar above philosophy part company with those who do not. We lavatubes have been breached without being destroyed by cannot win them over, we must leave them behind. The limits comet fragments and will be found coated with usable water of their visions would be a millstone around our necks. ice deposits far from the poles. Lavatubes are just as cold and Collaboration with fellow travelers can only set us on a road as thermally inviting as the polar permashade cold traps. They with an abundance of false turns and detours. Sometimes, there are large enough to serve as ideal placement for heat radiators. is not strength in numbers. It is better not to dilute the right There is more to the Moon than its surface. vision in search of quick gains. [see MMM #130 NOV ‘99, pp. 1-4 “The Lunar Rock Pile: Behind Door #1, Door #2, Door #3, etc.”; p. 5, “Of Coasts, (1) “where we can learn to deal with the Moon Harbors, and Lighthouses”] on its own terms” The polar sites are very non-typical areas of the (4) “at a natural crossroads site” Moon.
Recommended publications
  • The Moon Illusion and Size–Distance Scaling—Evidence for Shared Neural Patterns
    The Moon Illusion and Size–Distance Scaling—Evidence for Shared Neural Patterns Ralph Weidner1*, Thorsten Plewan1,2*, Qi Chen1, Axel Buchner3, Peter H. Weiss1,4, and Gereon R. Fink1,4 Abstract ■ A moon near to the horizon is perceived larger than a moon pathway areas including the lingual and fusiform gyri. The func- at the zenith, although—obviously—the moon does not change tional role of these areas was further explored in a second ex- its size. In this study, the neural mechanisms underlying the periment. Left V3v was found to be involved in integrating “moon illusion” were investigated using a virtual 3-D environ- retinal size and distance information, thus indicating that the ment and fMRI. Illusory perception of an increased moon size brain regions that dynamically integrate retinal size and distance was associated with increased neural activity in ventral visual play a key role in generating the moon illusion. ■ INTRODUCTION psia; Sperandio, Kaderali, Chouinard, Frey, & Goodale, Although the moon does not change its size, the moon 2013; Enright, 1989; Roscoe, 1989). near to the horizon is perceived as relatively larger com- One concept of size constancy scaling implies that the pared with when it is located at the zenith. This phenome- retinal image size and the estimated distance of an object non is called the “moon illusion” and is one of the oldest are conjointly considered, thereby enabling constant size visual illusions known (Ross & Plug, 2002). Despite exten- perception of objects at different distances (Kaufman & sive research, no consensus has been reached regarding Kaufman, 2000). With respect to the moon illusion, appar- the underlying perceptual and neural correlates (Ross & ent distance theories, for example, propose that “the per- Plug, 2002; Hershenson, 1989).
    [Show full text]
  • The Simplest Method to Measure the Geocentric Lunar Distance: a Case of Citizen Science
    The simplest method to measure the geocentric lunar distance: a case of citizen science Jorge I. Zuluaga1,a, Juan C. Figueroa2,b and Ignacio Ferrin1,c 1 FACom - Instituto de Física - FCEN, Universidad de Antioquia, Calle 70 No. 52-21, Medellín, Colombia 2 Independent Software Developer ABSTRACT We present the results of measuring the geocentric lunar distance using what we propose is the simplest method to achieve a precise result. Although lunar distance has been systematically measured to a precision of few millimeters using powerful lasers and retroreflectors installed on the moon by the Apollo missions, the method devised and applied here can be readily used by nonscientist citizens (e.g. amateur astronomers or students) and it requires only a good digital camera. After launching a citizen science project called the “Aristarchus Campaign”, intended to involve astronomy enthusiasts in scientific measurement of the Lunar Eclipse of 15 April 2014, we compiled and measured a series of pictures obtained by one of us (J.C. Figueroa). These measurements allowed us to estimate the lunar distance to a precision of ~3%. We describe here how to perform the measurements and the method to calculate from them the geocentric lunar distance using only the pictures time stamps and a precise measurement of the instantaneous lunar apparent diameter. Our aim here is not to provide any improved measurement of a well- known astronomical quantity, but rather to demonstrate how the public could be engaged in scientific endeavors and how using simple instrumentation and readily available technological devices such as smartphones and digital cameras, any person can measure the local Universe as ancient astronomers did.
    [Show full text]
  • The Moon and Eclipses
    The Moon and Eclipses ASTR 101 September 14, 2018 • Phases of the moon • Lunar month • Solar eclipses • Lunar eclipses • Eclipse seasons 1 Moon in the Sky An image of the Earth and the Moon taken from 1 million miles away. Diameter of Moon is about ¼ of the Earth. www.nasa.gov/feature/goddard/from-a-million-miles-away-nasa-camera-shows-moon-crossing-face-of-earth • Moonlight is reflected sunlight from the lunar surface. Moon reflects about 12% of the sunlight falling on it (ie. Moon’s albedo is 12%). • Dark features visible on the Moon are plains of old lava flows, formed by ancient volcanic eruptions – When Galileo looked at the Moon through his telescope, he thought those were Oceans, so he named them as Marias. – There is no water (or atmosphere) on the Moon, but still they are known as Maria – Through a telescope large number of craters, mountains and other geological features visible. 2 Moon Phases Sunlight Sunlight full moon New moon Sunlight Sunlight Quarter moon Crescent moon • Depending on relative positions of the Earth, the Sun and the Moon we see different amount of the illuminated surface of Moon. 3 Moon Phases first quarter waxing waxing gibbous crescent Orbit of the Moon Sunlight full moon new moon position on the orbit View from the Earth waning waning gibbous last crescent quarter 4 Sun Earthshine Moon light reflected from the Earth Earth in lunar sky is about 50 times brighter than the moon from Earth. “old moon" in the new moon's arms • Night (shadowed) side of the Moon is not completely dark.
    [Show full text]
  • Projects of Peter Kokh, Crew #45 Commander
    Projects of Peter Kokh, Crew #45 Commander Setting a Moonlike Atmosphere in a very Marslike Setting We have little control over the Marslike geology of the MDRS surroundings - sedimentary and water- carved. However, in a test performed in a brief visit on December 8, 2005, we found that wraparound green tint sunglasses worn inside the EVA Suit helmets do a lot to neutralize the orange hues, and to notably gray and whiten the landscape. We will also apply, in a clean-remove fashion, green auto window tint to the interior of the Hab upper deck portholes. Another trick will be to suspend an Earth globe at the right distance outside one of the Hab portholes to show the apparent size and phase of Earth as it would appear suspended over the lunar horizon. Inside the Hab, the table will be set with dishes that look like they might have been made on the early lunar frontier. For recreation, there will be Moon-theme films, games that could be manufactured on the frontier, “made-on-Luna”musical instruments, and Moon-”filk”: lunar words set to well-known melodies. Our diet and menu selections, chosen by Executive Officer Laurel Ladd, will attempt to model what will be available on the early frontier. Lunar Analog EVA Outings Design It will be a bigger challenge to conduct EVA, space-suited excursions, into the areas surrounding the Mars Hab, that maintain a “we’re on the Moon!” illusion. Two particularly moonlike areas have been identified and will be visited during regular EVA excursions. Nighttime EVA activities are traditionally discouraged for safety reasons.
    [Show full text]
  • Is the Moon Really Larger Near the Horizon?
    EXPLORATION 2: INCREDIBLE SHRINKING MOON! Is the Moon really larger near the horizon? he purpose of this exploration is to design an experiment, using the telescope, to investigate the apparent size of the TMoon when it is near the horizon, compared to when it is higher in the sky. • To the eye, the Moon appears much larger when it is near horizon. GRADE LEVEL: 7-12 • Yet when the Moon is near the horizon, it is actually slightly further from Earth than when viewed higher in the sky. If TIME OF YEAR: anything, we would expect the horizon Moon to look smaller. Anytime, but best when Moon is nearly full (see text). • Measurement is important because our senses and our intuition SCIENCE STANDARDS: are often a poor guide to reality. Earth-Moon system Science as inquiry MATERIALS NEEDED: The Moon when it is near the horizon is one of nature's stunning 4Online telescopes (or use sights. It looks huge, and so close that you could practically touch it. archived images.) 4 MOImage, software Can it really be that large? What's going on? provided 4 Earth globe This investigation offers students important opportunities to learn 4 Printer (optional) about how and why we do science—from question-posing, to TIME NEEDED: forming a hypothesis, to designing an experiment, gathering 2 class periods evidence and coming to a conclusion. TEXTBOOK LINK: Students first discuss why the Moon might look so much larger when it is near the horizon. They must draw on their understandings of how the world works: What factors might influence the perceived size of an object? Second, as they reason from a simple Earth-Moon model, they are confronted with contradictory evidence: Though the Moon looks larger near the horizon, it ought to look smaller, because it is farthest From the Ground Up!: Moon 1 © 2003 Smithsonian Institution away there.
    [Show full text]
  • The Moon Illusion Author(S): Frances Egan Source: Philosophy of Science, Vol. 65, No. 4 (Dec., 1998), Pp. 604-623 Published
    The Moon Illusion Author(s): Frances Egan Source: Philosophy of Science, Vol. 65, No. 4 (Dec., 1998), pp. 604-623 Published by: The University of Chicago Press on behalf of the Philosophy of Science Association Stable URL: http://www.jstor.org/stable/188575 . Accessed: 17/02/2011 14:32 Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at . http://www.jstor.org/action/showPublisher?publisherCode=ucpress. Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. The University of Chicago Press and Philosophy of Science Association are collaborating with JSTOR to digitize, preserve and extend access to Philosophy of Science. http://www.jstor.org The Moon Illusion* Frances Egantl Rutgers University Ever since Berkeleydiscussed the problemat length in his Essay Towarda New Theory of Vision,theorists of vision have attempted to explain why the moon appears larger on the horizon than it does at the zenith.
    [Show full text]
  • The Moon Illusion Explained Introduction and Summary
    The Moon Illusion Explained Finally! Why the Moon Looks Big at the Horizon and Smaller When Higher Up. Don McCready Professor Emeritus, Psychology Department University of Wisconsin-Whitewater Whitewater, WI 53190 Email to: mccreadd at uww.edu Introduction and Summary [Revised 12/07/02] For many centuries, scientists have been puzzled by the illusion that the full moon at the horizon usually looks larger than it does later, at higher elevations toward the zenith of the sky. Many explanations (theories) have been offered. But, it is fair to say that the two dozen (or so) scientists most familiar with current research on the illusion have not yet accepted any one theory. The jury is still out. The theory reviewed in this article is relatively quite new (McCready, 1983, 1985, 1986). It begins with the basic assumption that, when most people say "the moon looks larger," they are referring primarily to the moon's angular subtense (McCready, 1965). That is, the horizon moon looks a larger angular size than the zenith moon. That experience is imitated if you look at the circles in the figure at the right, because the lower circle subtends a larger angle at your eye than the upper circle does. Angular Size Illusion. For the moon, that appearance is known as the moon illusion, because the angle the moon's diameter subtends at your eye measures about 1⁄2 degree of arc no matter where the moon is in the sky. That is, there is no physical (optical) reason why the horizon moon should look larger than the zenith moon: For instance, it has been known for centuries that the horizon moon is not "magnified' by the earth's atmosphere.
    [Show full text]
  • Complete Dissertation
    VU Research Portal The lunar crust Martinot, Melissa 2019 document version Publisher's PDF, also known as Version of record Link to publication in VU Research Portal citation for published version (APA) Martinot, M. (2019). The lunar crust: A study of the lunar crust composition and organisation with spectroscopic data from the Moon Mineralogy Mapper. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. E-mail address: [email protected] Download date: 10. Oct. 2021 VRIJE UNIVERSITEIT THE LUNAR CRUST A study of the lunar crust composition and organisation with spectroscopic data from the Moon Mineralogy Mapper ACADEMISCH PROEFSCHRIFT ter verkrijging van de graad Doctor of Philosophy aan de Vrije Universiteit Amsterdam, op gezag van de rector magnificus prof.dr. V. Subramaniam, in het openbaar te verdedigen ten overstaan van de promotiecommissie van de Faculteit der Bètawetenschappen op maandag 7 oktober 2019 om 13.45 uur in de aula van de universiteit, De Boelelaan 1105 door Mélissa Martinot geboren te Die, Frankrijk promotoren: prof.dr.
    [Show full text]
  • The Moon Tilt Illusion
    THE MOON TILT ILLUSION ANDREA K. MYERS-BEAGHTON AND ALAN L. MYERS Abstract. The moon tilt illusion is the startling discrepancy between the direction of the light beam illuminating the moon and the direction of the sun. The illusion arises because the observer erroneously expects a light ray between sun and moon to appear as a line of constant slope according to the positions of the sun and the moon in the sky. This expectation does not correspond to the reality that observation by direct vision or a camera is according to perspective projection, for which the observed slope of a straight line in three-dimensional object space changes according to the direction of observation. Comparing the observed and expected directions of incoming light at the moon, we derive an equation for the magnitude of the moon tilt illusion that can be applied to all configurations of sun and moon in the sky. 1. Introduction Figure 1. Photograph of the moon tilt illusion. Picture taken one hour after sunset with the moon in the southeast. Camera pointed upwards 45◦ from the horizon with bottom of camera parallel to the horizon. The photograph in Figure 1 provides an example of the moon tilt illusion. The moon's illumination is observed to be coming from above, even though the moon is Date: June 30, 2014. 1 2 ANDREA K. MYERS-BEAGHTON AND ALAN L. MYERS high in the sky and the sun had set in the west one hour before this photo was taken. The moon is 45◦ above the horizon in the southeast, 80% illuminated by light from the sun striking the moon at an angle of 17◦ above the horizontal, as shown by the arrow drawn on the photograph.
    [Show full text]
  • Solstice Moon Illusion 17 June 2008
    Solstice Moon Illusion 17 June 2008 The Ponzo Illusion. Image credit: Dr. Tony Phillips. The full moon rising over Manchester, Maryland. Credit: Edmund E. Kasaitis. Sky watchers have known for thousands of years that low-hanging moons look unnaturally big. At first, astronomers thought the atmosphere must be Sometimes you just can't believe your eyes. This magnifying the Moon near the horizon, but cameras week is one of those times. On Wednesday night, showed that is not the case. Moons on film are the June 18th, step outside at sunset and look around. same size regardless of elevation: example. You'll see a giant form rising in the east. At first Apparently, only human beings see giant moons. glance it looks like the full Moon. It has craters and seas and the face of a man, but this "moon" is Are we crazy? strangely inflated. It's huge! After all these years, scientists still aren't sure. You've just experienced the Moon Illusion. When you look at the Moon, rays of moonlight converge and form an image about 0.15 mm wide There's no better time to see it. The full Moon of on the retina in the back of your eye. High moons June 18th is a "solstice moon", coming only two and low moons make the same sized spot, yet the days before the beginning of northern summer. brain insists one is bigger than the other. Go figure. This is significant because the sun and full Moon are like kids on a see-saw; when one is high, the A similar illusion was discovered in 1913 by Mario other is low.
    [Show full text]
  • Over the Moon!
    30 31 MOO ASTRONOMY OVER THE The N p in View Sir John Herschel final account, people began asking why no other newspapers had reported the event. Some folks began to doubt the stories, but they enjoyed them all the same. The articles became known as The Great Moon Hoax. No one at the newspaper ever admitted that the story was a fantasy, and the true identity of the writer l We see the same side, or hemisphere, of was never revealed. the Moon all the time because Earth’s Herschel, who was living gravity has slowed the Moon’s rotation; in South Africa at the now one Moon rotation and one Moon time, learned about the TR hoax months later. revolution around Earth take the same EX A! EXTRA! Read All About It! amount of time. l The surface of the Moon may appear to be n 1835, the publishers of The New York Sun newspaper wanted to silvery gray, white, or pale yellow, but it sell more papers. So, on August 25, the first of a series of articles appeared claiming that British astronomer Sir John Herschel had is primarily charcoal gray. The presence of used a gigantic telescope to discover life on the Moon. The reporter iron oxide creates reds, and titanium oxide claimed that Herschel had seen blue unicorns, horned bears, beavers that introduces shades of blue. A full Moon may walked on two feet, and humans with wings (“man-bats”), as well appear orange because Earth’s atmosphere as sheep, zebras, pelicans, cranes, and other exotic creatures amid r acts as a filter, minimizing the blues.
    [Show full text]
  • Getting Ready for the All American Eclipse! an NGSS Storyline Approach to Classroom Instruction by Brian Kruse (Astronomical Society of the Pacific)
    © 2016, Astronomical Society of the Pacific No. 93 • Fall 2016 www.astrosociety.org/uitc 390 Ashton Avenue, San Francisco, CA 94112 Getting Ready for the All American Eclipse! An NGSS Storyline Approach to Classroom Instruction by Brian Kruse (Astronomical Society of the Pacific) he release of the Framework for K–2 Science nity to engage students in an NGSS storyline, with a Education, and the adoption of the Next coherent sequence of investigations that give them Generation Science Standards, has created a an in-depth understanding of the phenomenon of Tshift in the way teachers approach their instruction. eclipses. Basically, an NGSS storyline incorporates For students to demonstrate their understanding, an Anchoring Phenomena, something students are they must now engage more actively in investigating able to observe for themselves, which can lead to phenomena rather than passively learning about a a Driving Question for the overall investigation. A set of topics. Next year, on August 21, 2017, teachers set of sub-questions lead to investigations which and students across the nation will have an oppor- move into student development of an initial model tunity to witness one of the most awe-inspiring to explain the phenomena, which can then prompt phenomena on earth: a total solar eclipse. Taking further questions and investigations to refine the place mid-day on what is for many schools a school model. Eventually, the students come to a point day, everyone in the contiguous United States will where they can form a final consensus model. At experience at least a 60% partial solar eclipse. Those Figure 1: The Great American Eclipse of 2017 any time during the instructional sequence, it is fortunate enough to live in the path of totality will, Illustration courtesy of Michael Zeiler: Great American Eclipse.com recommended to probe for student understanding weather permitting, see up to two minutes and forty using a variety of formative assessment strategies.
    [Show full text]