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Lunar Eclipse? a Lunar Eclipse
What Causes a Lunar Eclipse? A Lunar Eclipse An eclipse of the Moon (lunar eclipse) occurs when a full moon moves into the shadow of the Earth. The Earth blocks some of the sunlight that would otherwise shine on the face of the Moon. From our position on Earth it looks as though a dark Earth’s Orbital plane Sun Earth Moon spot is moving across the Moon. The Moon travels once around the Earth every month. Why don’t we see an eclipse every month? The Earth orbits in a plane called the ecliptic. The Moon’s orbit is tilted slightly at 5 degrees. This means that there are only two points where the Moon crosses the ecliptic plane. These spots, called nodes, are the only places where the Moon will line up with the Earth and the Sun. The rest of its orbit is either above or below the Earth’s orbital plane. Descending Node Moon’s Orbital Path The Ecliptic (Earth’s Orbital Plane) 5° Ascending Node Lunar Eclipse An eclipse only occurs when the Moon, the Earth and the Sun all line up in the same plane. If the Earth is between the Sun and the Moon and the Moon is full when it crosses a node, a lunar eclipse can occur. The Earth will cast a shadow on the Moon. Solar Eclipse However, another type of eclipse will occur if the Moon lines up with a node between the Sun and the Earth. A solar eclipse will take place in this event. The Moon blocks the Earth’s view of the light of the Sun. -
Occdhtlm3newstelter
OccdhtlM3Newstelter Volume II, Number 10 january, 1981 Occultation Newsletter is published by the International Occultation Timing Association. Editor and Compositor: H. F. DaBo11; 6 N 106 White Oak Lane; St. Charles, IL 60174; U.S.A. Please send editorial matters to the above, but send address changes, requests, matters of circulation, and other IOTA business to IOTA; P.0. Box 596; Tinley Park; IL 60477; U.S.A. NOTICE TO LUNAR OCCULTATION OBSERVERS paho1. by contacting Sr. Francisco Diego Q., Ixpan- tenco 26-bis, Real dc Ids Reyes, Coyoacdn, Mexico, L. V. Morrison D.F., Mexico. Currently, however, the Latin American Section is experiencing problems with funding, and On 1981 January 1 the international centre for the for the time being, it may be necessary for would-be receipt of timings of occultations of stars by the IOTA/LAS members to subscribe to the English-lan- Moon will be transferred from HM Nautical Almanac guage edition of o.n., or to join the parent IOTA. Office, Royal Greenwich Observatory, England to As- tronomical Division, Hydrographic Department, Japan IOTA NEWS "' From that date observers should send their lunar oc- cultation reports and any correspondence connected David W. Dunham with lunar occultations to the following address: As of 1981 January 1, H. M. Nautical Almanac Office, Astronomical Division at the Royal Greenwich Observatory, England, will Hydrographic Department discontinue collecting observations of lunar occul- Tsukiji-5 tations. After that date, observers should send Chuo-ku, Tokyo their reports to the new International Occultation 104 JAPAN Centre in japan, as described in this issue's lead article. -
Glossary of Marine Navigation 798
GLOSSARY OF MARINE NAVIGATION 798 The main cause, however, appears to be the winds which prevail from south through west to northwest over 50 percent of the time throughout the year and the transverse flows from the English coast toward the Skaggerak. The current retains the characteristics of a J major nontidal current and flows northeastward along the northwest coast of Denmark at speeds ranging between 1.5 to 2.0 knots 75 to 100 percent of the time. Jacob’s staff. See CROSS-STAFF. jamming, n. Intentional transmission or re-radiation of radio signals in such a way as to interfere with reception of desired signals by the K intended receiver. Janus configuration. A term describing orientations of the beams of acoustic or electromagnetic energy employed with doppler naviga- Kaléma, n. A very heavy surf breaking on the Guinea coast during the tion systems. The Janus configuration normally used with doppler winter, even when there is no wind. sonar speed logs, navigators, and docking aids employs four beams Kalman filtering. A statistical method for estimating the parameters of a of ultrasonic energy, displaced laterally 90° from each other, and dynamic system, using recursive techniques of estimation, mea- each directed obliquely (30° from the vertical) from the ship’s bot- surement, weighting, and correction. Weighting is based on vari- tom, to obtain true ground speed in the fore and aft and athwartship ances of the measurements and of the estimates. The filter acts to directions. These speeds are measured as doppler frequency shifts reduce the variance of the estimate with each measurement cycle. -
Lunar Nodes Keys to Emotions and Life Experience
Lunar Nodes Keys To Emotions and Life Experience Diane Ronngren Copyright 2012 ETC Publishing All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical including photocopying or recording, or by any information storage and retrieval system without written permission from the author and publisher, except in the case of brief quotations embodied in critical reviews and articles. ETC Publishing www.etcpublishing.com ISBN 978 -1-930038-55-4 Cover design and graphics by Gary Dunham Dedication To my mother, Norma, who gave me life, taught me the values inherent in my South Node in Libra and inspired me to pursue the possibilities of my North Node in Aries. To Family, who have always encouraged my life journey. Table of Contents Introduction ......................................................................................7 Chapter 1 - Symbols of Destiny ........................................................ 9 Chapter 2 - Node Basics .................................................................. 20 Chapter 3 - Lunar Nodes, Signs and Houses .................................. 26 Aries North Node / Libra South Node ....................................... 26 1st House North Node / 7th House South Node Taurus North Node / Scorpio South Node ................................. 29 2nd House North Node / 8th House South Node Gemini North Node / Sagittarius South Node ........................... 33 3rd House North Node / 9th House South Node Cancer North Node / Capricorn South Node ............................. 36 4th House North Node / 10th House South Node Leo North Node / Aquarius South Node .................................... 39 5th House North Node / 11th House South Node Virgo North Node / Pisces South Node ..................................... 42 6th House North Node / 12th House South Node Libra North Node / Aries South Node ....................................... 45 7th House North Node / 1st House South Node Scorpio North Node / Taurus South Node ................................ -
Solar Eclipses, One of Nature’S Most Impressive Sights, Have Fascinated People for Thousands of Years
® World Book Student Database The trusted, student-friendly online reference tool. Name: ____________________________________________________ Date:_________________ World Book Online: Solar eclipses, one of nature’s most impressive sights, have fascinated people for thousands of years. How much do you know about solar eclipses? Answer these questions to find out! Solar Eclipse First, go to www.worldbookonline.com Then, click on “Student.” If prompted, log on with your ID and Password. Find the answers to the questions below by using the “Search” tool. Since this activity is about solar eclipses, you can start by searching the key word “eclipse.” Write the answers on the lines provided or below the question. Find1. A It! solar eclipse takes place when the sun appears to become dark as the _______________ passes between the sun and Earth. 2. A _______________ eclipse occurs when the moon darkens as it passes through Earth’s shadow. 3. During a solar eclipse the moon’s shadow usually moves from west to east across Earth at a speed of about _______________ miles ( _______________ kilometers) per hour. 4. What is the average time the sun is totally darkened during a total solar eclipse? 5. A total solar eclipse can be seen only in certain parts of the world, which lie in the __________________________. © 2017 World Book, Inc. Chicago, Illinois, U.S.A. All rights reserved. World Book and the globe device are trademarks or registered trademarks of World Book, Inc. This webquest may be reproduced without World Book’s permission provided that it is reproduced exactly as published by World Book and is reproduced for entirely non-commercial educational purposes. -
Looking at Eclipses from Both Sides
Firefox https://cdn.mc-weblink.sg-mktg.com/weblink/MTYyMzAzOTc5N3xKe... Email not displaying correctly? View it in your browser. Looking at Eclipses from Both Sides by Zane B Stein If you have looked at eclipses astrologically you may have noticed a strange fact: the time that astronomers list for the time of maximum eclipse is usually different than the one your astrology program gives you, and sometimes the difference can be quite a few minutes. Why is that? We can give you a clear explanation, and then we can show you how you can adjust a setting (in both Solar Fire, and Astro Gold for Mac), so that you can calculate the charts for the times of both the astrological and the astronomical eclipses. 1 of 4 6/7/2021, 11:18 AM Firefox https://cdn.mc-weblink.sg-mktg.com/weblink/MTYyMzAzOTc5N3xKe... Let’s begin by comparing the eclipse definitions. Astronomical Definition: According to NASA, "An eclipse occurs when one heavenly body such as a moon or planet moves into the shadow of another heavenly body." During a Lunar Eclipse, the “Earth moves between the Sun and the Moon, Earth blocks the sunlight instead of light hitting the Moon's surface, and Earth's shadow falls on the Moon," but if it is a Solar Eclipse, “the Moon moves between the Sun and Earth, the Moon blocks the light of the Sun instead of light hitting the Earth's surface, and the Moon's shadow falls on the Earth.” Astrological Definition: When the Sun and Moon are at the exact same degree, minute and second of a sign (New Moon) or opposite signs (Full Moon), AND the lunation occurs not far from the North or South Lunar Nodes, you have, respectfully, a Solar or Lunar Eclipse. -
Viewing an Eclipse Safely
ECLIPSES SOLAR an eclipse safely How to observe SOLAR ECLIPSE, OCTOBER 2014, BY LEMAN NORTHWAY Solar eclipses are quite rare and are often a major event. The SOLAR ECLIPSES Moon passes right in front of the Sun, blotting out its disc. Every time a solar eclipse occurs there are various things to look for. However, it is extremely dangerous to just go out and look up. The Sun is so bright that just looking at it can blind you, so you’ll need to prepare beforehand. There are various ways to observe eclipses safely, using both everyday materials and telescopes or binoculars. So read this leaflet Introduction to find out what happens during an eclipse and how you can see all the stages of the event safely. This booklet was written by the Royal Astronomical Society with The Society for Popular Astronomy and is endorsed by the British Astronomical Association The Royal Astronomical The Society for Popular Formed in 1890, the Society, founded in Astronomy is for British Astronomical 1820, encourages and beginners of all ages. Our Association has an promotes the study of aim is to make astronomy international reputation astronomy, solar-system fun, and our magazine, for the quality of science, geophysics and Popular Astronomy, is full its observational closely related branches of information to help and scientific work. of science. you get to know the Membership is open to www.ras.org.uk sky and get involved. We even have a special Young all persons interested in HIGGS-BOSON.COM JOHNSON: PAUL BY D Stargazers section, run by TV’s Lucie Green. -
I. ASYMMETRY of ECLIPSES. CALENDAR CYCLES Igor Taganov & Ville-V.E
I. ASYMMETRY OF ECLIPSES. CALENDAR CYCLES Igor Taganov & Ville-V.E. Saari 1.1 Metaphysics of solar eclipses p. 12 1.2 Calendar cycles of solar eclipses p. 20 Literature p. 26 To describe the two main types of solar eclipses in modern astronomy the old Latin terms – umbra, antumbra and penumbra are still used (Fig. 1.1). A “partial eclipse” (c. 35 %) occurs when the Sun and Moon are not exactly in line and the Moon only partially obscures the Sun. The term “central eclipse” (c. 65 %) is often used as a generic term for eclipses when the Sun and Moon are exactly in line. The strict definition of a central eclipse is an eclipse, during which the central line of the Moon’s umbra touches the Earth’s surface. However, extremely rare the part of the Moon’s umbra intersects with Earth, producing an annular or total eclipse, but not its central line. Such event is called a “non-central” total or annular eclipse [2]. Fig. 1.1. Main types of solar eclipses The central solar eclipses are subdivided into three main groups: a “total eclipse” (c. 27 %) occurs when the dark silhouette of the Moon completely obscures the Sun; an “annular eclipse” (c. 33 %) occurs when the Sun and Moon are exactly in line, but the apparent size of the Moon is smaller than that of the Sun; a “hybrid eclipse” or annular/total eclipse (c. 5 %) at certain sites on the Earth’s surface appears as a total eclipse, whereas at other sites it looks as annular. -
Solar and Lunar Eclipses Reading
Eclipses What would you think if you were walking home from school on a sunny afternoon and the sun began to disappear? Would you be frightened? On rare occasions, the moon completely blocks the sun. The sky grows as dark as night even in the middle of a clear day. The air gets cool and the sky becomes an eerie color. If you don’t know what is happening, you can become very frightened. The moon doesn’t usually go directly between Earth and the sun or directly behind Earth. As the diagram below shows, the moon’s orbit around Earth is slightly tilted with respect to Earth’s orbit around the sun. As a result, in most months the moon revolves completely around Earth without the moon moving into Earth’s shadow or the moon’s shadow hitting Earth. When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs. An eclipse (ih klips) occurs when an object in space comes between the sun and a third object, and casts a shadow on that object. There are two types of eclipses: solar eclipses and lunar eclipses. (The words solar and lunar come from the Latin words for “sun” and “moon.”) The Tilt of the Moon’s Orbit The moon’s orbit is tilted with respect to Earth’s orbit. So the moon rarely goes directly between Earth and the sun. Solar Eclipses During a new moon, the moon is almost exactly between Earth and the sun. But most months, as you have seen, the moon travels a little above or below the sun in the sky. -
The Moon and Eclipses
Lecture 10 The Moon and Eclipses Jiong Qiu, MSU Physics Department Guiding Questions 1. Why does the Moon keep the same face to us? 2. Is the Moon completely covered with craters? What is the difference between highlands and maria? 3. Does the Moon’s interior have a similar structure to the interior of the Earth? 4. Why does the Moon go through phases? At a given phase, when does the Moon rise or set with respect to the Sun? 5. What is the difference between a lunar eclipse and a solar eclipse? During what phases do they occur? 6. How often do lunar eclipses happen? When one is taking place, where do you have to be to see it? 7. How often do solar eclipses happen? Why are they visible only from certain special locations on Earth? 10.1 Introduction The moon looks 14% bigger at perigee than at apogee. The Moon wobbles. 59% of its surface can be seen from the Earth. The Moon can not hold the atmosphere The Moon does NOT have an atmosphere and the Moon does NOT have liquid water. Q: what factors determine the presence of an atmosphere? The Moon probably formed from debris cast into space when a huge planetesimal struck the proto-Earth. 10.2 Exploration of the Moon Unmanned exploration: 1950, Lunas 1-3 -- 1960s, Ranger -- 1966-67, Lunar Orbiters -- 1966-68, Surveyors (first soft landing) -- 1966-76, Lunas 9-24 (soft landing) -- 1989-93, Galileo -- 1994, Clementine -- 1998, Lunar Prospector Achievement: high-resolution lunar surface images; surface composition; evidence of ice patches around the south pole. -
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. -
Lecture 2: Our Place in Space Copernican Principle Multiwavelength Astronomy
Lecture 2: Our Place in Space •It is now clear that Earth is not central or special in its general properties (mass, distance from central star, etc.) •The Sun is an average star •The Milky Way is a typical spiral galaxy •This leads to the “principle of mediocrity” or “Copernican principle” Copernican Principle •The “principle of mediocrity” or “Copernican principle” states that physical laws are the same throughout the Universe •This principle can be tested using the scientific method! •So far, it seems to agree with observations perfectly •One of the key ideas is that we can use light from distant objects to understand conditions there, using the work of Isaac Newton Multiwavelength Astronomy •The color and energy of light are related to the Wavelength… •Different wavelengths of radiation tell us about objects with different temperatures… 1 Multiwavelength Astronomy Multiwavelength Astronomy •Using Newton’s techniques, combined with our knowledge of atomic structure, we can use light to study distant objects… X-ray optical composition of matter temperature of matter Scientific Method and Observation •Transformed the search for meaning into a quest for objective truth •We can deduce the properties of distant objects using observations •The scientific method originated in the renaissance, and is still used today: hypo thesi n s io tti iic d e r y p y p r r o o e o truth e truth h b h t s t e rr v a tt ii o n test 2 Copernican Principle •The validity of the “Copernican principle” is great news for science, because it means that we can