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PHYS 390 Lectures 1/2 - The Big Picture 1/2
PHYS 390 Lectures 1/2 - The Big Picture 1/2

... in its orbit around the Sun (first used in 1838 by Freidrich Wilhelm Bessel). Below, the Earth is shown in its orbit at two extreme positions 6 months apart, labelled by the letters A and B, and a nearby star is at position S. The direction towards a very distant star is indicated by the two vertica ...
January 2007 - Western Nevada Astronomical Society
January 2007 - Western Nevada Astronomical Society

... Q: What is a sunspot? Sunspots are temporary, dark, relatively cool blotches on the Sun’s bright photosphere. They usually appear in groups of two or more. Individual sunspots last anywhere from a few hours to a few months. Sunspots were first observed and recorded by the Chinese about 800 B.C. Suns ...
By: Kaylea Stone, Kalena Karp, Megan
By: Kaylea Stone, Kalena Karp, Megan

... Mercury does not have any moons. If it did have moons they would have either drifted away or crashed back down onto the surface of Mercury, because they are not there anymore. Mercury's M ' rolling, lli d dust-covered d hill hills h have been b eroded d d from the constant bombardment of meteorites. ...
For Creative Minds - Arbordale Publishing
For Creative Minds - Arbordale Publishing

... An asteroid belt, the dwarf planets, and comets also orbit the sun. Most meteors are “space dust” from the comet tails. We have 24 hours in a day because it takes the Earth 24 hours to rotate on its axis. It only takes Saturn 10 hours and 39 minutes to rotate on its axis. A “day” on Saturn would be ...
Professor Jonathan Fortney TA Kate Dallas Thursday, February 11
Professor Jonathan Fortney TA Kate Dallas Thursday, February 11

... MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The mass of Jupiter can be calculated by 1) _____ A) measuring the orbital speed of one of Jupiter's moons. B) measuring the orbital period and distance of one of Jupiter's moons. C) knowing the ...
UCSB CLAS
UCSB CLAS

... Star X has twice the mass of the Sun. One of Star X’s planets has the same mass as the Earth, and orbits Star X at the same distance at which the Earth orbits the Sun. The orbital speed of this planet of Star X is A. faster than the Earth’s orbital speed. B. the same as the Earth’s orbital speed. C. ...
Extreme Tidal Waves in Binary Star Systems
Extreme Tidal Waves in Binary Star Systems

... The two white dwarfs of J0651 where once like our sun, but they have for the evolution of the burned down to become much smaller and more massive. The larger star stars. One of the effects is about the size of Neptune and about a quarter of the mass of the sun. of tides is to synchronize The other o ...
First Exam - University of Iowa Astrophysics
First Exam - University of Iowa Astrophysics

... (d) the rotation of the Earth on its axis. ∗ (e) precession of the Earth’s rotation axis. 26. You look up in the night sky and see the planet Jupiter, the planet Mars, and the Moon very close together. You know that they are located in or close to one of the following. Which is it? (a) the ecliptic ...
Lecture04
Lecture04

... Earth’s rotation • Responsible for our familiar calendar “day”. • Period (of rotation) = 24 hours = (24 hours)x(60 min/hr)x(60s/min) =86,400 s • Astronomers refer to this 24 hour period as a mean solar day (§2-7), implying that this time period is measured with respect to the Sun’s position on the ...
Introduction to the sky
Introduction to the sky

... is magnificent. Roughly 2000 stars are visible to the unaided eye. If you know where to look, you can see Mercury, Venus, Mars, Jupiter, Saturn, and even Uranus. Occasionally, a bright comet is visible. On certain nights of the year there are many meteors (shooting stars) to be seen. Sometimes man-m ...
Introduction to the sky
Introduction to the sky

... is magnificent. Roughly 2000 stars are visible to the unaided eye. If you know where to look, you can see Mercury, Venus, Mars, Jupiter, Saturn, and even Uranus. Occasionally, a bright comet is visible. On certain nights of the year there are many meteors (shooting stars) to be seen. Sometimes man-m ...
Teacher Subject Title Concept Context Tek/SE Verb
Teacher Subject Title Concept Context Tek/SE Verb

... What do you see when you look up at the sky? Does the sky look the same during the day as it does at night? Other than the Moon, what do we see in the night sky? What do you know about stars? Misconceptions: students may think that all of the stars in a constellation are near each other. Students ma ...
Aust Curriculum Connections 2012
Aust Curriculum Connections 2012

... tonight’s sky. The other planets: orbits and time for a “year”. What are the planets made of? Could I land on Jupiter? How many “years” old would I be if I lived on other planets? How long would it take to travel there? Why are some bodies covered in craters? Why not the Earth? The Southern Cross as ...
File
File

... The period of a planet's orbital period around the Sun with respect to the distant stars is called its sidereal period. The sidereal period of the Earth is about 365 1/4 days. Another type of period is useful for viewing the other planets - the period between the times their positions both lie on th ...
Document
Document

... 9. Why did the model of the universe proposed by Copernicus gain support soon after its publication? a. It more accurately predicted the position of planets. b. It gave a better explanation for the phases of the Moon. c. It was a more elegant explanation of retrograde motion. d. The old system of Pt ...
Planet Earth
Planet Earth

... Earth Facts • Earth is a terrestrial planet (a rocky body), third from the Sun. • Earth has a single natural satellite, the Moon. • Of the four terrestrial planets in the Solar System: – Earth is the largest both in size and mass. – Earth has the highest density, the strongest magnetic field, and t ...
Numbers to Keep in Mind
Numbers to Keep in Mind

... currently crossing your meridian. (Again, the true definition is more complicated, but this is the basic definition.) Hence ...
1 Sep: 6.13am BST 15 Sep: 6.43am BST 30 Sep: 7.14am BST
1 Sep: 6.13am BST 15 Sep: 6.43am BST 30 Sep: 7.14am BST

... Sagitta (the Arrow) a small but lovely constellation representing an arrow sailing harmlessly between the two birds. To the left of Altair is another small constellation Delphinus (the Dolphin) its four principle stars forming a box shape known as Job’s Coffin. Finally, from these constellations, fo ...
Chapter 3
Chapter 3

... Overcoming the third objection (parallax): • Tycho thought he had measured stellar distances, so lack of parallax seemed to rule out an orbiting Earth. • Galileo showed stars must be much farther than Tycho thought — in part by using his telescope to see the Milky Way is countless individual stars. ...
Earth in space
Earth in space

... expanding so that objects (galaxies) move away from one another  The galaxies aren’t expanding…just the spaces between them ...
How does the earth orbit the sun?
How does the earth orbit the sun?

... 25. Gravity keeps the ____________________ moving around the earth. It also keeps the planets moving around the _______________________. In the spaces provided write “True” if the sentence is true. Write “False” if the sentence is false. 26. _________ The planets move in circular orbits around the s ...
grade vii and viii - Sacred Heart CMI Public School
grade vii and viii - Sacred Heart CMI Public School

... rift valleys, such as Valles Marineris, shows geological activity that may have persisted until as recently as 2 million years ago. Its red colour comes from iron oxide (rust) in its soil. Mars has two tiny natural satellites (Deimosand Phobos) thought to be captured asteroids. ...
- Scholieren.com
- Scholieren.com

... What is a dwarf planet? Dwarf planets are a category of solar system bodies created by the International Astronomical Union in 2006 to describe objects orbiting the Sun that are big and heavy enough to resemble a planet, but not big enough to 'clear' a free path on its orbit. What is the difference ...
teachers` answers for Secondary Visit Guide and Activities
teachers` answers for Secondary Visit Guide and Activities

... Write down a few things we have discovered about the Universe. The birth of the Universe, the formation of the Solar System, properties of the planets and moons, the existence of other solar systems (extrasolar planets), the structure of the Milky Way, the presence of other galaxies and their proper ...
Octobers Meeting - Tauranga Astronomical Society
Octobers Meeting - Tauranga Astronomical Society

... over the horizon. Asteroidal debris, earth dust or ionized atmospheric particles – were they also responsible for the high night time illumination thousands of km away? The enigma is – there is no visible, or any evidence, of an impact crater. The first expeditions of note into this area were not un ...
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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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