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Sun - Cobb Learning
Sun - Cobb Learning

... 6. The apparent visual magnitude of star A is 2 and the apparent visual magnitude of star B is 1. Based on this information which statement below must be true? a. Star A emits more light than star B. b. Star B emits more light than star A. c. Star A is closer than star B. d. Star B is closer than st ...
PPTX
PPTX

... Steady brightness Slow, eastward motion against stars, 1o per day Returns to same position after 365.25 days, or one year. ...
Stars and gravity - Hyde Park 3rd Grade
Stars and gravity - Hyde Park 3rd Grade

... You cannot see many starts at all without certain tools to help you. Binoculars and telescopes make studying patterns of stars easier. They magnify objects that are far away. They make objects look larger and easier to see. If you use a telescope, you can see many more stars than with your eyes alon ...
PDF, 179Kb - Maths Careers
PDF, 179Kb - Maths Careers

... Antares is 4.94 x 1015 km away from the Earth. Astronomers estimate that Antares is just one of roughly 2.5 x 1011 stars in the Milky Way. The radius of Antares is 3.0 x 108 km – that’s wider than the orbit of Mars and roughly 430 times larger the Sun’s radius. Have a look at the scaled picture to s ...
Animated Science Space Revision
Animated Science Space Revision

... Dwarf planet, as defined by the International Astronomical Union (IAU), is a celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has but is too small to be called a full sized planet and is not a satellite. The term dwarf planet was adopted in 2006 as part of ...
Exercise set five
Exercise set five

... of course, the large, roughly circular features with raised rims formed (usually) when meteoroids slammed into the surface. “Rays” are the lighter lines of scattered debris seen around some craters. “Highlands” are the relatively light, mountainous regions. “Maria” (singular: “mare”) are the darker, ...
Option_E_Astrophysics_
Option_E_Astrophysics_

... this system.  Because stars have such a wide range in brightness, magnitudes are on a “log scale”  Every one magnitude corresponds to a factor of 2.5 change in brightness  Every 5 magnitudes is a factor of 100 change in brightness (because (2.5)5 = 2.5 x 2.5 x 2.5 x 2.5 x 2.5 = 100) ...
How Do We Know the Earth is Spherical?
How Do We Know the Earth is Spherical?

... away from the north celestial pole, which is why it is called the North Star or the Pole Star. •  Celestial equator divides the sky into northern and southern ...
Tessmann Show Descriptions
Tessmann Show Descriptions

... What Color is Your Planet? –Bob Menn (60 minutes) Discover how astronomical observations of planets and stars have given us clues to their composition and environments. As we visit the planets of our solar system, the shows covers science curriculum, presenting topics such as the nature of gravity; ...
Study Guide #3 Answer Key
Study Guide #3 Answer Key

... a. Earth orbits the Sun once : (365 and a quarter days (365.25). The extra quarter is the reason that we end up with a leap year once every 4 years, where there are 366 days in the year.) b. The Moon orbits the Earth twice: (On average it takes 27.322 days for the Moon to complete one orbit around E ...
W > 1 - The Open University
W > 1 - The Open University

... M45 oc - "The Pleiades" or "Seven Sisters". Probably the most famous star cluster. Test your eyesight from a dark site by counting the number of naked eye stars that are visible. Seven should readily be seen. Keen vision will lead you into double figures. A test for moderate apertures is the nebulos ...
Some Basic Principles from Astronomy
Some Basic Principles from Astronomy

... surface of the Earth, and what we would like to know more about is out there – thataway! [◮ Imagine I am gesturing vaguely at the ceiling as you read this ◭] • In many ways, the story of astronomy began with attempting to measure distances —how big is the Earth? how far away is the Moon? how big is ...
Oct 2015 - Bays Mountain Park
Oct 2015 - Bays Mountain Park

... The Moon represents perhaps the first great paradox of the night sky in all of human history. While its angular size is easy to measure with the unaided eye from any location on Earth, ranging from 29.38 arc-minutes (0.4897°) to 33.53 arc-minutes (0.5588°) as it orbits our world in an ellipse, that ...
C-Notes - greenslime.info
C-Notes - greenslime.info

... When the Northern hemisphere tilts towards the Sun = _______________ When the Northern hemisphere tilts away from Sun = _______________. When the Northern hemisphere is neither tilted toward/away from Sun, then it is either _________________ or ___________________. Seasons in the Southern hemisphere ...
d - Haus der Astronomie
d - Haus der Astronomie

... By averaging, we find the approximate distance to the Andromeda Galaxy: (2,52 ± 0,14) 10 lyly ...
Maya .(English)
Maya .(English)

... After superior conjunction, Venus rises after the sunrise, so set after the sunset: evening star. ...
Eratosthenes Determines the Size of the Earth in about 200 B.C.
Eratosthenes Determines the Size of the Earth in about 200 B.C.

... Change in length of day for people at high latitudes is quite dramatic! Above Arctic Circle, Sun never ...
planet
planet

... How many planets are known to exist outside the solar system? • There have been more than three hundred planets (424 as of yesterday) discovered orbiting other stars to date. ...
p35-KIDS_Layout 1
p35-KIDS_Layout 1

... the Solar System, Triton has a retrograde orbit, indicating that it was captured rather than forming in place; it was probably once a dwarf planet in the Kuiper belt. It is close enough to Neptune to be locked into asynchronous rotation, and it is slowly spiralling inward because of tidal accelerati ...
Discovering the Universe II
Discovering the Universe II

... © 2014 Pearson Education, Inc. ...
Activities, In the Footsteps of Galileo
Activities, In the Footsteps of Galileo

... of doubt to no one that they perform their revolutions about this planet while at the same time they all accomplish together orbits of twelve years’ length about the center of the world.” (Starry Messenger, Galileo Galilei, 1610) Objective: Discover that Jupiter exhibits a small, flattened disk as ...
Mars Science Laboratory Makes First Contact Mysterious Particles
Mars Science Laboratory Makes First Contact Mysterious Particles

... yellow, is a wide double star that you may just be able to resolve with your unaided eyes. If not, the smallest binoculars will do the trick. · Wednesday, Nov. 30 · Far to the lower left of the Moon sparkles 1st-magnitude Fomalhaut. It's due south at its highest soon after dark now. Thursday, Dec. 1 ...
ASTRONOMY 120
ASTRONOMY 120

... 12. Thanks to Copernicus, we know how to find the distances to the planets in terms of the Earth-Sun distance (1 A.U.). Venus is 0.723 A.U. from the Sun. If we aim radar signals at Venus and allow them to bounce off its surface and return to Earth, we receive those signals 278.12 seconds later. If l ...
Introduction: Gravity
Introduction: Gravity

... push pull ...
Earth In Space - Hicksville Public Schools / Homepage
Earth In Space - Hicksville Public Schools / Homepage

... Evidence of Revolution: movement of different constellations seen in the night sky over the course of a year. Constellation: cluster of stars that form an imaginary mythological image ...
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Extraterrestrial skies



In astronomy, the term extraterrestrial sky refers to a view of outer space from the surface of a world other than Earth.The sky of the Moon has been directly observed or photographed by astronauts, while those of Titan, Mars, and Venus have been observed indirectly by space probes designed to land on the surface and transmit images back to Earth.Characteristics of extraterrestrial skies appear to vary substantially due to a number of factors. An extraterrestrial atmosphere, if present, has a large bearing on visible characteristics. The atmosphere's density and chemical composition can contribute to differences in colour, opacity (including haze) and the presence of clouds. Astronomical objects may also be visible and can include natural satellites, rings, star systems and nebulas and other planetary system bodies.For skies that have not been directly or indirectly observed, their appearance can be simulated based on known parameters such as the position of astronomical objects relative to the surface and atmospheric composition.
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