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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 |
121695 |
|
Where do planetary rings come from, and what are they made of? (Beginner)
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Aug 05 |
89039 |
|
Is there oxygen in the atmospheres of other planets? (Intermediate)
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Aug 05 |
136874 |
|
Does the Moon rotate? (Beginner)
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Aug 04 |
91317 |
|
How can we tell what the interiors of planets are like? (Advanced)
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Jun 04 |
83793 |
|
How long has there been water on Earth? (Intermediate)
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Apr 04 |
95992 |
|
How fast does the Earth go at perihelion and aphelion? (Intermediate)
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Mar 04 |
143152 |
|
How do unmanned space probes avoid running into things? (Beginner)
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Nov 03 |
77937 |
|
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 |
80241 |
|
Why doesn't the hydrogen on Jupiter explode? (Intermediate)
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Sep 03 |
63777 |
|
What do astronauts eat in space? Can they grow food? (Beginner)
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Feb 03 |
261332 |
|
Why do spacecraft need heat shields coming back to Earth but not leaving? (Intermediate)
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Jan 03 |
70743 |
|
Why are Saturn's rings flat? (Intermediate)
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Dec 02 |
96710 |
|
How big a change in the Earth's orbit would be required to destroy all life? (Intermediate)
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Nov 02 |
108508 |
|
Will the Leonid meteor shower go away? (Beginner)
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Nov 02 |
59890 |
|
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 |
68313 |
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What are the names of the earth, moon, sun, and solar system? (Beginner)
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Oct 02 |
568892 |
|
What's that dark spot on the Sun? (Beginner)
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Aug 02 |
65361 |
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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 |
128928 |
|
Does the Moon rotate? Are there other moons that always keep one face toward their planet? (Intermediate)
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Jul 02 |
482778 |
|
What would happen if an asteroid 10 kilometers across hit the Earth? (Beginner)
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Jul 02 |
318450 |
|
Can astronauts produce water in space? (Intermediate)
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Jun 02 |
75280 |
|
Did life originate on Earth, or did it come from somewhere else? (Intermediate)
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May 02 |
83728 |
|
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
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May 02 |
1000743 |
|
Why are the compositions of comets and asteroids different? (Intermediate)
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May 02 |
68768 |
|
Who discovered each planet? (Intermediate)
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May 02 |
207224 |
|
How do we feel heat? (Intermediate)
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May 02 |
113026 |
|
How was the starting point for the Julian Date system chosen? (Advanced)
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May 02 |
75296 |
|
Why is it called astronomy when all the other sciences end in -ology? (Beginner)
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May 02 |
56904 |
|
How does libration allow us to see more than 50% of the Moon? (Advanced)
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Apr 02 |
56273 |
|
Why are stars and planets round? (Beginner)
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Feb 02 |
182034 |
|
Did astronauts really go to the Moon, or is it a hoax? (Beginner)
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Feb 02 |
130882 |
|
How much time do astronomers spend looking through telescopes? (Beginner)
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Jan 02 |
69984 |
|
How much money do astronomers make? (Intermediate)
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Jan 02 |
180056 |
|
What's the best college for astronomy? (Intermediate)
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Jan 02 |
109096 |
|
What kind of schooling is necessary to become an astronomer? (Intermediate)
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Jan 02 |
168467 |
|
What skills do astronomers need? (Beginner)
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Jan 02 |
122027 |
|
What's the best thing about being an astronomer? (Beginner)
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Jan 02 |
67556 |
|
What do I need to do to become an astronomer? (Beginner)
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Jan 02 |
190803 |
|
What kinds of jobs do astronomers do? (Intermediate)
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Jan 02 |
97074 |
|
What's the difference between astronomy and astrology? (Beginner)
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Jan 02 |
282212 |
|
What's the difference between astronomy and astrophysics? (Intermediate)
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Jan 02 |
142966 |