On the Milky Way, the Pleiades, and Sirius
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Eclipse Newsletter
ECLIPSE NEWSLETTER The Eclipse Newsletter is dedicated to increasing the knowledge of Astronomy, Astrophysics, Cosmology and related subjects. VOLUMN 2 NUMBER 1 JANUARY – FEBRUARY 2018 PLEASE SEND ALL PHOTOS, QUESTIONS AND REQUST FOR ARTICLES TO [email protected] 1 MCAO PUBLIC NIGHTS AND FAMILY NIGHTS. The general public and MCAO members are invited to visit the Observatory on select Monday evenings at 8PM for Public Night programs. These programs include discussions and illustrated talks on astronomy, planetarium programs and offer the opportunity to view the planets, moon and other objects through the telescope, weather permitting. Due to limited parking and seating at the observatory, admission is by reservation only. Public Night attendance is limited to adults and students 5th grade and above. If you are interested in making reservations for a public night, you can contact us by calling 302-654- 6407 between the hours of 9 am and 1 pm Monday through Friday. Or you can email us any time at [email protected] or [email protected]. The public nights will be presented even if the weather does not permit observation through the telescope. The admission fees are $3 for adults and $2 for children. There is no admission cost for MCAO members, but reservations are still required. If you are interested in becoming a MCAO member, please see the link for membership. We also offer family memberships. Family Nights are scheduled from late spring to early fall on Friday nights at 8:30PM. These programs are opportunities for families with younger children to see and learn about astronomy by looking at and enjoying the sky and its wonders. -
The Gould Belt
Astrophysics, Vol. 57, No. 4, pp. 583-604, December, 2014. REVIEWS THE GOULD BELT V.V. Bobylev1,2 1Pulkovo Astronomical Observatory, St. Petersburg, Russia 2Sobolev Astronomical Institute, St. Petersburg State University, Russia AbstractThis review is devoted to studies of the Gould belt and the Local system. Since the Gould belt is the giant stellar-gas complex closest to the sun, its stellar component is characterized, along with the stellar associations and diffuse clusters, cold atomic and molecular gas, high-temperature coronal gas, and dust contained in it. Questions relating to the kinematic features of the Gould belt are discussed and the most interesting scenarios for its origin and evolution are examined. 1 Historical information Stars of spectral classes O and B that are visible to the naked eye define two large circles in the celestial sphere. One of them passes near the plane of the Milky Way, while the second is slightly inclined to it and is known as the Gould belt. The minimum galactic latitude of the Gould belt is in the region of the constellation Orion, and the maximum, in the region of Scorpio-Centaurus. Herschel noted [1] that some of the bright stars in the southern sky appear to be part of a separate structure from the Milky Way with an inclination to the galactic equator of about 20◦. Commenting on the features of the distribution of stars in the Milky Way, Struve [2] independently noted that the stars that form the largest densifications on the celestial sphere can lie in two planes with a mutual inclination of about 10◦. -
Introduction to Astronomy from Darkness to Blazing Glory
Introduction to Astronomy From Darkness to Blazing Glory Published by JAS Educational Publications Copyright Pending 2010 JAS Educational Publications All rights reserved. Including the right of reproduction in whole or in part in any form. Second Edition Author: Jeffrey Wright Scott Photographs and Diagrams: Credit NASA, Jet Propulsion Laboratory, USGS, NOAA, Aames Research Center JAS Educational Publications 2601 Oakdale Road, H2 P.O. Box 197 Modesto California 95355 1-888-586-6252 Website: http://.Introastro.com Printing by Minuteman Press, Berkley, California ISBN 978-0-9827200-0-4 1 Introduction to Astronomy From Darkness to Blazing Glory The moon Titan is in the forefront with the moon Tethys behind it. These are two of many of Saturn’s moons Credit: Cassini Imaging Team, ISS, JPL, ESA, NASA 2 Introduction to Astronomy Contents in Brief Chapter 1: Astronomy Basics: Pages 1 – 6 Workbook Pages 1 - 2 Chapter 2: Time: Pages 7 - 10 Workbook Pages 3 - 4 Chapter 3: Solar System Overview: Pages 11 - 14 Workbook Pages 5 - 8 Chapter 4: Our Sun: Pages 15 - 20 Workbook Pages 9 - 16 Chapter 5: The Terrestrial Planets: Page 21 - 39 Workbook Pages 17 - 36 Mercury: Pages 22 - 23 Venus: Pages 24 - 25 Earth: Pages 25 - 34 Mars: Pages 34 - 39 Chapter 6: Outer, Dwarf and Exoplanets Pages: 41-54 Workbook Pages 37 - 48 Jupiter: Pages 41 - 42 Saturn: Pages 42 - 44 Uranus: Pages 44 - 45 Neptune: Pages 45 - 46 Dwarf Planets, Plutoids and Exoplanets: Pages 47 -54 3 Chapter 7: The Moons: Pages: 55 - 66 Workbook Pages 49 - 56 Chapter 8: Rocks and Ice: -
Formation and Evolution of Galaxies and Black Holes
Journal of Physical Science and Application 8 (1) (2018) 23-29 doi: 10.17265/2159-5348/2018.01.003 D DAVID PUBLISHING Formation and Evolution of Galaxies and Black Holes Cui-xiang Zhong Department of Science and Technology, Jiangxi Normal University, Nanchang 330022, China Abstract: In the past, people did not realize the formation and structure of galaxies. They even mistook the black holes hidden in the center of a galaxy as independent celestial objects, making black holes mysterious and unbelievable. It was only after the author studied and discovered the laws of the formation and evolution of satellites, planets and stars that he put forward the scientific theory of galaxy formation and evolution, therefore revealing the hierarchical structure of galaxy and the existence and characteristics of black holes as the main nodes of galactic structure. Key words: Galactic structure, galaxy formation, galaxy evolution, black holes, black hole area. 1. Introduction achievements in the research field of black holes. In 2005, the working group led by Zhiqiang Shen of As early as 1930s, it has been recognized that Shanghai Astronomical Observatory of Chinese galaxies in the universe are not randomly distributed, Academy of Sciences found some conclusive evidence but because of the lack of two dimensional supporting that there exists a super massive black observational data, there has been no breakthrough in holes in the center of Milky Way. In 2015, the the understanding of large-scale structures. Only until international team led by astronomers from Peking 1980s, with the continuous deepening of red-shift University in China and from the University of survey, could one clearly describe the Arizona announces their findings of a quasar, with its three-dimensional distribution of galaxies in large central black hole mass of 12 billion solar masses and scale structure, and found that galaxies have lumpy the luminosity of 420 trillion suns is at a distance of structures. -
Life Cycle of Stars Script Edited by SJ on 29Th June 2011
Life Cycle of Stars Script Edited by SJ on 29th June 2011. This first show is based loosely on the Life Cycle of Stars. It is aimed at students studying GCSE Astronomy. If the kids are younger than GCSE or below, nicer to start with Planets and Ecliptic and star signs stuff, detailed in Optional Start, leaving out more complex stuff on Neutron Stars and Black Holes. Stellarium commands are in blue Red notes are optional facts to add, and depend on age of audience and time. The talk should take 20-30 mins depending on how much science/mythology you elaborate on. Suggest that it is nice to do this show condensed into 20 mins at the end of We are Astronomers… to give a 40-45minute show. Optional easing-in start Do this if audience have no real knowledge of the stars and planets - best starting point for younger kids, if GCSE probably not needed can jump straight in at Finding North, but check! In stellarium start with sky as it is with sun (a for atmosphere) and ground, g. and at current time 8 . Ask ‘Can we see any stars in the night sky?’ Expect responses such as ‘Only the Sun, no because it’s too bright’- Ask ‘so why can’t we see the other stars in the day?’ - Get response cos our star the sun, too bright, light bounces off atmosphere, stops us seeing the other stars. Mention the light pollution in cities bouncing off the inner atmosphere stopping us seeing stars even at Night! Speed up time <L> and see sun moving across the sky, ask why the sun is moving? Explain that sun is not actually moving it’s us that is moving about on our axis and this makes the sun appear to rise in the East and set in the West. -
Full-Text (PDF)
Vol.9(6), pp. 71-78, November 2018 DOI: 10.5897/IJEL2017.1067 Article Number: 63A2A8159324 ISSN: 2141-2626 Copyright ©2018 Author(s) retain the copyright of this article International Journal of English and Literature http://www.academicjournals.org/IJEL Full Length Research Paper Lyrical life: The prevailing mysticism of the evolution and inevitable putrefaction of the great human race Faisal Ahmed Department of English, World University of Bangladesh, Panthapath Campus, House-16, Road-7, Dhanmondi, Dhaka- 1205, Bangladesh. Received 8 May 2017; Accepted 26 October 2018 “Souls come to light after a fierce fight / among lovely „xx or xy‟ pairs at day or night” This hypothetical review is regarding the poem “Lyrical Life” which is a fourteen-line poem in a sonnet structure written by the author of this article. This article is intended to share the author‟s philosophy of life with that of other scholars and philosophers including pre-Socratic ones around the globe from ancient time to postmodern era. Human life-cycle is always a mystery and up-in-the-air issue to the people of antediluvian age, as well as to that of postmodern era, in fact, till today. The super-mystery is the origin or birth of human beings through sexual intercourse and their various stages of life—innocent infancy, playful childhood, obstreperous adolescence, extreme juvenescence, senescence, and the ultimate consequence of bereavement or quietus. The spectrum of life, and the uncertain circumstances that human beings undergo to sustain and survive is beyond their imagination. The golden segment of life is youth whereas the truest melancholy part of it is decease, demise or death and putrefaction. -
Modern-Baby-Names.Pdf
All about the best things on Hindu Names. BABY NAMES 2016 INDIAN HINDU BABY NAMES Share on Teweet on FACEBOOK TWITTER www.indianhindubaby.com Indian Hindu Baby Names 2016 www.indianhindubaby.com Table of Contents Baby boy names starting with A ............................................................................................................................... 4 Baby boy names starting with B ............................................................................................................................. 10 Baby boy names starting with C ............................................................................................................................. 12 Baby boy names starting with D ............................................................................................................................. 14 Baby boy names starting with E ............................................................................................................................. 18 Baby boy names starting with F .............................................................................................................................. 19 Baby boy names starting with G ............................................................................................................................. 19 Baby boy names starting with H ............................................................................................................................. 22 Baby boy names starting with I .............................................................................................................................. -
A Review on Substellar Objects Below the Deuterium Burning Mass Limit: Planets, Brown Dwarfs Or What?
geosciences Review A Review on Substellar Objects below the Deuterium Burning Mass Limit: Planets, Brown Dwarfs or What? José A. Caballero Centro de Astrobiología (CSIC-INTA), ESAC, Camino Bajo del Castillo s/n, E-28692 Villanueva de la Cañada, Madrid, Spain; [email protected] Received: 23 August 2018; Accepted: 10 September 2018; Published: 28 September 2018 Abstract: “Free-floating, non-deuterium-burning, substellar objects” are isolated bodies of a few Jupiter masses found in very young open clusters and associations, nearby young moving groups, and in the immediate vicinity of the Sun. They are neither brown dwarfs nor planets. In this paper, their nomenclature, history of discovery, sites of detection, formation mechanisms, and future directions of research are reviewed. Most free-floating, non-deuterium-burning, substellar objects share the same formation mechanism as low-mass stars and brown dwarfs, but there are still a few caveats, such as the value of the opacity mass limit, the minimum mass at which an isolated body can form via turbulent fragmentation from a cloud. The least massive free-floating substellar objects found to date have masses of about 0.004 Msol, but current and future surveys should aim at breaking this record. For that, we may need LSST, Euclid and WFIRST. Keywords: planetary systems; stars: brown dwarfs; stars: low mass; galaxy: solar neighborhood; galaxy: open clusters and associations 1. Introduction I can’t answer why (I’m not a gangstar) But I can tell you how (I’m not a flam star) We were born upside-down (I’m a star’s star) Born the wrong way ’round (I’m not a white star) I’m a blackstar, I’m not a gangstar I’m a blackstar, I’m a blackstar I’m not a pornstar, I’m not a wandering star I’m a blackstar, I’m a blackstar Blackstar, F (2016), David Bowie The tenth star of George van Biesbroeck’s catalogue of high, common, proper motion companions, vB 10, was from the end of the Second World War to the early 1980s, and had an entry on the least massive star known [1–3]. -
Arxiv:1307.0569V1
IAUS 298 Setting the scence for Gaia and LAMOST Proceedings IAU Symposium No. 298, 2014 c 2014 International Astronomical Union S. Feltzing, G. Zhao, N. A. Walton & P. A. Whitelock, eds. DOI: 00.0000/X000000000000000X The Milky Way thin disk structure as revealed by stars and young open clusters Giovanni Carraro Alonso de Cordova 3107, 19001, Santiago de Chile, Chile email: [email protected] Abstract. In this contribution I shall focus on the structure of the Galactic thin disk. The evolution of the thin disk and its chemical properties have been discussed in detail by T. Bensby’s contribution in conjunction with the properties of the Galactic thick disk, and by L.Olivia in conjunction with the properties of the Galactic bulge. I will review and discuss the status of our understanding of three major topics, which have been the subject of intense research nowadays, after long years of silence: (1) the spiral structure of the Milky Way, (2) the size of the Galactic disk, and (3) the nature of the Local arm (Orion spur), where the Sun is immersed. The provisional conclusions of this discussion are that : (1) we still have quite a poor knowledge of the Milky Way spiral structure, and the main dis-agreements among various tracers are still to be settled; (2) the Galactic disk does clearly not have an obvious luminous cut-off at about 14 kpc from the Galactic center, and next generation Galactic models need to be updated in this respect, and (3) the Local arm is most probably an inter-arm structure, similar to what we see in several external spirals, like M 74. -
Astronomy Alphabet
Astronomy Alphabet Educational video for children Teacher https://vimeo.com/77309599 & Learner Guide This guide gives background information about the astronomy topics mentioned in the video, provides questions and answers children may be curious about, and suggests topics for discussion. Alhazen A Alhazen, called the Father of Optics, performed NASA/Goddard/Lunar Reconnaissance Orbiter, Apollo 17 experiments over a thousand years ago Can you find Alhazen crater when you look at the Moon? to learn about how light travels and Why does the Moon look bigger near the behaves. He also studied astronomy, horizon? separated light into colors, and sought to Believe it or not, scientists still don’t know for sure why explain why the Moon looks bigger near we perceive the Moon to be larger when it lies near to the the horizon. horizon. Though photos of the Moon at different points in the sky show it to be the same size, we humans think we I’ve never heard of Abu Ali al-Hasan ibn al- see something quite different. Try this experiment yourself Hasan ibn al-Hatham (Alhazen). sometime! One possibility is that objects we see next to the Tell me more about him. Moon when it’s near to them give us the illusion that it’s We don’t know that much about Alhazen be- bigger, because of a sense of scale and reference. cause he lived so long ago, but we do know that he was born in Persia in 965. He wrote hundreds How many craters does the Moon have, and what of books on math and science and pioneered the are their names? scientific method of experimentation. -
Importance of Epoch of Kali Yuga
1 of 5 c The Importance of Epoch of Kaliyuga In the ancient texts of our Nation, time is measured both in Micro and Macroscopic units. Puranic Texts like Vishnu Puranam (1:3:8 to 10) and Sreemad Bhagavatam (3:11:33) describe Macro Time. Varivasya Rahasyam (vv.12cd, 13 & 16 cd) describes Micro Time. In the same way, Astronomical texts like Surya Siddhanta 1:11 to 27, Maha Aryabhatta Siddhanta 1:15 to 20, Brahma Sphuta Siddhanta 1:4 to 14, Vatesvara Siddhanta 1:7 to 10 and Siddhanta Siromani 1: 5 to 27 mention the Time Division in Micro as well as Macroscopic units. These Puranic and Astronomical texts describe that the life time of Brahma is 432,00,00,000 x 2 x 360 x 100 years, i.e. 3,11,04,000,00,00,000 human years. The smallest unit of time mentioned in these ancient texts is Truti i.e. 1/1,12,500 second. Life time of Brahma has 2 x 360 x 100 Kalpa. One Kalpa has 432 Crore human years and of 14 Manvantra of 30,84,48,000 human years, including Sandhi period. One Manvantra has 71 Mahayuga and their Sandhi period. Sandhi Period is equal to 17,28,000 human years (Years of Kruta or Satya yuga). One Mahayuga is of 43,20,000 human years, i.e.17,28,000 years of Kruta + 12,96,000 years of Treta + 8,64,000 years of Dvapara + 4,32,000 human years of Kali yuga. Here, 360 human years are equal to one Divya year which is again equal to 12 Pitru years. -
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