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The Moon slows the Earth's rotation, but how fast was it spinning billions of years ago? (Intermediate)
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May 06 |
103454 |
|
Where do planetary rings come from, and what are they made of? (Beginner)
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Aug 05 |
76548 |
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Is there oxygen in the atmospheres of other planets? (Intermediate)
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Aug 05 |
109632 |
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Does the Moon rotate? (Beginner)
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Aug 04 |
79172 |
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How can we tell what the interiors of planets are like? (Advanced)
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Jun 04 |
66689 |
|
How long has there been water on Earth? (Intermediate)
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Apr 04 |
86235 |
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How fast does the Earth go at perihelion and aphelion? (Intermediate)
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Mar 04 |
110301 |
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How do unmanned space probes avoid running into things? (Beginner)
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Nov 03 |
63742 |
|
Why did the Pioneer and Voyager take only 2 years to reach Jupiter, while Galileo and Cassini took more than 5 years? (Intermediate)
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Nov 03 |
67060 |
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Why doesn't the hydrogen on Jupiter explode? (Intermediate)
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Sep 03 |
52455 |
|
What do astronauts eat in space? Can they grow food? (Beginner)
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Feb 03 |
250714 |
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Why do spacecraft need heat shields coming back to Earth but not leaving? (Intermediate)
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Jan 03 |
58996 |
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Why are Saturn's rings flat? (Intermediate)
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Dec 02 |
82390 |
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How big a change in the Earth's orbit would be required to destroy all life? (Intermediate)
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Nov 02 |
86957 |
|
Will the Leonid meteor shower go away? (Beginner)
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Nov 02 |
50844 |
|
A line drawn perpendicular to a line through the tips of the horns of the crescent moon doesn't point to the Sun! Why not? (Advanced)
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Nov 02 |
56956 |
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What are the names of the earth, moon, sun, and solar system? (Beginner)
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Oct 02 |
479506 |
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What's that dark spot on the Sun? (Beginner)
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Aug 02 |
55947 |
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How can I calculate the position or path of the Sun for a given time and location? (Intermediate)
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Aug 02 |
111678 |
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Does the Moon rotate? Are there other moons that always keep one face toward their planet? (Intermediate)
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Jul 02 |
452153 |
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What would happen if an asteroid 10 kilometers across hit the Earth? (Beginner)
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Jul 02 |
227426 |
|
Can astronauts produce water in space? (Intermediate)
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Jun 02 |
61678 |
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Did life originate on Earth, or did it come from somewhere else? (Intermediate)
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May 02 |
74160 |
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Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
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May 02 |
879736 |
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Why are the compositions of comets and asteroids different? (Intermediate)
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May 02 |
58551 |
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Who discovered each planet? (Intermediate)
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May 02 |
150152 |
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How do we feel heat? (Intermediate)
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May 02 |
90843 |
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How was the starting point for the Julian Date system chosen? (Advanced)
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May 02 |
62227 |
|
Why is it called astronomy when all the other sciences end in -ology? (Beginner)
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May 02 |
46126 |
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How does libration allow us to see more than 50% of the Moon? (Advanced)
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Apr 02 |
46524 |
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Why are stars and planets round? (Beginner)
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Feb 02 |
162331 |
|
Did astronauts really go to the Moon, or is it a hoax? (Beginner)
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Feb 02 |
119292 |
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How much time do astronomers spend looking through telescopes? (Beginner)
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Jan 02 |
59364 |
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How much money do astronomers make? (Intermediate)
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Jan 02 |
169751 |
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What's the best college for astronomy? (Intermediate)
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Jan 02 |
97677 |
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What kind of schooling is necessary to become an astronomer? (Intermediate)
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Jan 02 |
154975 |
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What skills do astronomers need? (Beginner)
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Jan 02 |
106744 |
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What's the best thing about being an astronomer? (Beginner)
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Jan 02 |
58503 |
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What do I need to do to become an astronomer? (Beginner)
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Jan 02 |
148618 |
|
What kinds of jobs do astronomers do? (Intermediate)
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Jan 02 |
89741 |
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What's the difference between astronomy and astrology? (Beginner)
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Jan 02 |
234085 |
|
What's the difference between astronomy and astrophysics? (Intermediate)
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Jan 02 |
116574 |