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Worksheet Task 2 - www .alexandria .k12 .mn .us
Worksheet Task 2 - www .alexandria .k12 .mn .us

... in 2009. So far it has discovered five new Earth-sized planets beyond our solar system. These planets are hotter than the Earth’s sun – much too hot for life as we know it. The Kepler team predict that they will need at least three years (and possibly longer) to find an Earth-like planet. The simple ...
ch 2 the sky
ch 2 the sky

... Precession causes Earth’s axis to sweep around a cone with a period of 26,000 years, and that changes the location of the seasons around Earth’s orbit  Northern winters now occur when Earth is 1.7% closer to the sun, but in 13,000 northern winters will occur on the other side of Earth’s orbit where ...
some interesting facts about planets
some interesting facts about planets

... A planet may look round ,but it is actually shaped like a spheroid. It actually looks like a squashed ball. ...
Formation of the Solar System
Formation of the Solar System

... changes in the sky form this star – the astrometric technique, but this is difficult. • Since 1995, this Doppler Technique has found evidence of over 200 planets orbiting stars in the near vicinity of the Sun. • Some of the extrasolar planets can be detected when the transit the star. The star’s bri ...
Stars and Galaxies
Stars and Galaxies

... Magnitude describes the brightness of a star • Two types of brightness: absolute magnitude and apparent magnitude • Apparent magnitude is the brightness we see here on Earth • Absolute magnitude is the actual brightness the star gives off. The more negative the number, the brighter the star is! ...
Searching for planets around evolved stars with COROT
Searching for planets around evolved stars with COROT

... accuracy better than 10 m/s is required to detect Jovian planets around dwarfs at about 5 AU. The situation is more complicated for giant stars, due to other mechanism that may also contribute for observed radial velocity variability. The COROT mission offers, certainly, an unique possibility for th ...
Chapter 5 - AstroStop
Chapter 5 - AstroStop

... Billions of chunks of rock and ice called comets are located beyond the orbit of Neptune. Occasionally, one of these will be pulled toward the inner solar system and form the familiar “tails” as it orbits close to the Sun. ...
My Moon: Moon Phases - University of Louisville
My Moon: Moon Phases - University of Louisville

... Beginning the experience from an observational perspective of seasonal differences, board a virtual spaceship to explore how Earth seasons are caused by a complex 3-dimensional interplay between the Sun and Earth. Fly above the plane of the Solar System to examine Earth’s orbit around the Sun and th ...
PowerPoint
PowerPoint

... If light emitted by #2 moves relative to #2 at speed c, Galileo says that #1 must see it move at c + v. But light emitted by #1 moves relative to #1 at speed c – or at speed c – v relative to #2! So the speed of light can’t be the same for everyone if Galileo – and our intuition – are right. But Max ...
Ch. 27 Notes
Ch. 27 Notes

... OUR SUN A star like our sun began in a nebula. Friction and gravity pull elements together and a star is formed. Our star (the sun) is within the main ...
PHYS_3380_082615_bw - The University of Texas at Dallas
PHYS_3380_082615_bw - The University of Texas at Dallas

... the fall. - in some regions, not much differentiation between the seasons. - different constellations visible at different times of the year - can use them to tell what month it is. For example, Scorpius is only visible in the northern hemisphere's evening sky in the summer. - many of the myths asso ...
All About Astronomy The Planets
All About Astronomy The Planets

... Our solar system consists of the sun, eight planets, moons, many dwarf planets (or plutoids), an asteroid belt, comets, meteors, and others. The sun is the center of our solar system; the planets, their moons, a belt of asteroids, comets, and other rocks and gas orbit the sun. The eight planets that ...
PHY 150
PHY 150

... track that the Sun will follow from when it leaves the main sequence to when it becomes a white dwarf. Approximately how much mass will the Sun have when it becomes a white dwarf? Where will the rest of the mass ...
Where are we at within the Universe? Earth
Where are we at within the Universe? Earth

... in their orbits. Newton wrote two famous laws about gravity: The Law of Inertia and the Law of Universal Gravitation. The Law of Inertia says that a body in motion tends to travel in a straight line unless it is disturbed by an unbalanced force. The Law of Inertia governs the motion of the planets a ...
antarctic and associated exploration book collection
antarctic and associated exploration book collection

... survey of the heavens, cataloguing the position of more than 3000 stars to an accuracy of 10'' (compared with Tycho's accuracy of about 1'). When Edmond Halley took up the search for stellar parallax in 1718 he compared Flamsteed's angular positions with those recorded by the ancient Greeks, general ...
Exoplanets and Tides
Exoplanets and Tides

... Venus, an inferior planet, very rarely transits the face of the Sun as seen from Earth. This happened most recently in 2012, as shown here (the black dot on the Sun’s face) ...
Coordinate System Notes 3 - School District of La Crosse
Coordinate System Notes 3 - School District of La Crosse

... 1. sidereal year- The time necessary for the sun to return to the same position with repect to the stars. 2. solar year( tropical) is the intreval between the passage of the sun through the vernal equinox a. This represents when the ecliptic crosses the celestial equator. a. tropical years are growi ...
Sample Exam 1
Sample Exam 1

... 5. The Cassini gap is associated with the planet ____________. a. Neptune b. Jupiter c. Saturn ...
Simple astronomy within the solar system
Simple astronomy within the solar system

... (a) If the northern observer notes a zenith angle of  = 7.2°, show that the radius of the earth is calculated to be 6.4 ∙ 108 cm. The two amateurs find that the second step necessary is to measure the velocity of the moon in its orbit about the center of the earth. They accomplish this indirectly b ...
A105 Stars and Galaxies
A105 Stars and Galaxies

... What can we see in the night sky? With the naked eye, we can see more than 2,000 stars, as well as 5 planets, the Moon, comets, meteors, the Milky Way, and a few other special objects The Milky Way is a band of light that makes a circle around the celestial sphere ...
Steve Holmes - KWFN October 22 2012 speaker
Steve Holmes - KWFN October 22 2012 speaker

... For example, the nearest star (Proxima Centauri) is 4.24 light-years away, meaning that it is 42 trillion km away from us. Other stars are thousands of light-years distant, for example Eta Carinae at 7500. These huge distances help convey the vastness of deep space and the size of the universe. They ...
Solar System 09 - MrFuglestad
Solar System 09 - MrFuglestad

... of stars at least 10 to 15 times as massive as the Sun. • With no outward forces to oppose gravitational forces, the remnant will collapse in on itself. The star eventually collapses to the point of zero volume and ...
WORD - hrsbstaff.ednet.ns.ca
WORD - hrsbstaff.ednet.ns.ca

... 12. An imaginary sphere of infinite extent with Earth at its center on which the stars, planets, and other heavenly bodies appear to be located is known as the a. Zodiac. b. celestial sphere. c. atmosphere. d. Valhalla. 13. Which one of the following statements is true about the celestial coordinat ...
Earth and the Universe -The Meaning of Life
Earth and the Universe -The Meaning of Life

... It has over 18 moons, two of which are huge. Only 18 moons are named Its largest moon is called Ganymede. Jupiter has a small ring system. One day on Jupiter lasts nearly 10 Earth hours. It takes 11.9 years (4332 Earth day) to orbit the Sun. ...
Article - Iowa State University
Article - Iowa State University

... Eight is enough. After years of debate since Pluto’s far-off discovery in 1930, the International Astronomic Union last week voted to drop the tiny, icy body from the traditional lineup and move it into a subcategory of dwarf planets. So the lineup now is: the four inner rocky planets (Mercury, Venu ...
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History of astronomy



Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of pre-history: vestiges of these are still found in astrology, a discipline long interwoven with public and governmental astronomy, and not completely disentangled from it until a few centuries ago in the Western World (see astrology and astronomy). In some cultures, astronomical data was used for astrological prognostication.Ancient astronomers were able to differentiate between stars and planets, as stars remain relatively fixed over the centuries while planets will move an appreciable amount during a comparatively short time.
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