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MODULE 3: NAVIGATION AND THE AGE OF
MODULE 3: NAVIGATION AND THE AGE OF

... sailor was. The time of day could be determined at sea by noting when the sun was at its highest point in the sky, i.e., noon. To keep track of the time, a clock was needed; but not even the best pendulum clocks worked at sea. The problem was not solved until the 19th Century, when the English clock ...
Ch. 3 - Astro1010
Ch. 3 - Astro1010

Close Double Stars from Video
Close Double Stars from Video

... - Grazing occultations observed since 1962 - Total occultations, both current and from published obs. - Spectroscopic binaries (including 1-line) were included to encourage observation of their occultations. • Too many dubious events were included; especially visual observers often reported “gradual ...
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PDF

...   We  were  surprised  how  much  better  Kepler  analysis  could   be:  Can  detect  or  rule  out  PBH  DM  over  much  of  the   remaining  PBH  mass  range!   ...
Unit #: - Applied Learning Dept., STEM+Computer Science
Unit #: - Applied Learning Dept., STEM+Computer Science

... knowledge is durable because it is open to change as new evidence or interpretations are encountered. SC.6.N.2.3: Recognize that scientists who make contributions to scientific knowledge come from all kinds of backgrounds and possess varied talents, interests, and goals. (Not Assessed) SC.6.N.3.2: R ...
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File

... Scientists have studied stars to discover how stars evolve. They know that stars form in a nebula when clouds of dust and gas are pulled together by gravity. Describe how this process continues for stars much more massive than the Sun. ...
Animals in “Light, Energy, and the EM Spectrum” Comic
Animals in “Light, Energy, and the EM Spectrum” Comic

... Dolphins, whales, and porpoises are closely related cetacean mammals. Cetus is Latin and is used in biological names to mean 'whale'. Its original meaning, comes from an ancient Greek word meaning 'whale' or "any huge fish or sea monster". In Greek mythology, Perseus defeated a sea monster named Cet ...
P7 Further Physics : Observing the Universe
P7 Further Physics : Observing the Universe

... The Sun and the Earth The Moon The night sky Stars and seasons The retrograde motion of Mars The retrograde motion of Mars Modelling an eclipse ...
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2016 - 2017 Comprehensive Science 3 (8 Grade) Regular

Comets, the Kuiper Belt and the Oort Cloud
Comets, the Kuiper Belt and the Oort Cloud

Topic 3 - Holy Cross Collegiate
Topic 3 - Holy Cross Collegiate

... You have learned how spectroscopes are used to identify the chemical make-up of the atmospheres of celestial objects. Spectroscopes also have another important use in astronomy. They can tell us how fast a celestial body, such as a star, is moving toward or away from us. You have probably noticed th ...
Module3: Life of a Star
Module3: Life of a Star

... Earth, the planets, asteroids and comets. The Sun makes up 99.9% of all the mass in our Solar System. The Earth orbits around 150 million kilometres from the Sun, although due to the elliptical shape of Earth’s orbit this distance varies throughout the year. The Sun is an average star - there are ma ...
Powerpoint slides - Earth & Planetary Sciences
Powerpoint slides - Earth & Planetary Sciences

... Very rare, but very useful because we can: 1) Obtain M (not M sin i) 2) Obtain the planetary radius 3) Obtain the planet’s spectrum (!) Only one example known to date. Light curve during occultation of HD209458. From Lissauer and Depater, Planetary Sciences, 2001 ...
pdf - at www.arxiv.org.
pdf - at www.arxiv.org.

... (note that Fairbridge and Shirkey, 1987, had not taken into account the DM as a GM event) and many of them refer to a possible new GM before the cycle 22. All of these conclusions are very interesting, especially because the current unexpected long minimum of solar activity has attracted attention w ...
Space Exploration
Space Exploration

... the observers to note the precise moment of observation. Armillery Sphere was used to locate celestial objects As measuring devices became more and more precise, old notions about the universe began to crumble. For example, Brahe's measurements--even though they were made with the naked eye--were fi ...
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INTRODUCTION TO CELESTIAL NAVIGATION

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Celestial Motions

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Venus The surface of Venus was scanned with radar waves beamed

... Venus travels around the sun in a nearly circular orbit. The planet's distance from the sun varies from about 67.7 million miles (108.9 million kilometers) at its farthest point to about 66.8 million miles (107.5 million kilometers) at its closest point. The orbits of all the other planets are more ...
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... in 1887. At the time it wasn’t understood that light needed no medium through which to travel. It was proposed that light traveled through an invisible “ether” in space. The Michelson-Morely experiment was an attempt to detect Earth’s motion through the ether. Here’s how it worked: First imagine you ...
Astronomy Today Charting the Heavens: The Foundations of
Astronomy Today Charting the Heavens: The Foundations of

... Answer: Vernal Equinox Section Ref: More Prec. 1-2 8) The Sun's lowest position in the sky occurs at the ________. Answer: winter solstice Section Ref: 1.4 9) The two days when the Sun rises due east and sets due west are the ________. Answer: equinoxes. Section Ref: 1.4 10) The four extra minutes i ...
STUDY OF UMBRA-PENUMBRA AREA RATIO OF SUNSPOTS
STUDY OF UMBRA-PENUMBRA AREA RATIO OF SUNSPOTS

... The Sun is a typical star. About a million times larger in volume than the Earth, the Sun contains almost 99.9% of the mass of the solar system. It emits energy into space, mostly in the form of electromagnetic radiation. The Sun’s spectrum is close to that of an idealized black body with a temperat ...
COMETS
COMETS

... with diameters less than 2 km are faint and hard to detect at these distances. A few have been discovered simply because they came very close to the Earth. Several more have been discovered near the Sun by the coronagraphs on orbiting spacecraft. Finally the Hubble Space Telescope is starting to ide ...
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Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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