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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 |
105758 |
|
Where do planetary rings come from, and what are they made of? (Beginner)
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Aug 05 |
78217 |
|
Is there oxygen in the atmospheres of other planets? (Intermediate)
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Aug 05 |
113555 |
|
Does the Moon rotate? (Beginner)
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Aug 04 |
80890 |
|
How can we tell what the interiors of planets are like? (Advanced)
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Jun 04 |
68699 |
|
How long has there been water on Earth? (Intermediate)
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Apr 04 |
87540 |
|
How fast does the Earth go at perihelion and aphelion? (Intermediate)
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Mar 04 |
114251 |
|
How do unmanned space probes avoid running into things? (Beginner)
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Nov 03 |
66023 |
|
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 |
68645 |
|
Why doesn't the hydrogen on Jupiter explode? (Intermediate)
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Sep 03 |
53730 |
|
What do astronauts eat in space? Can they grow food? (Beginner)
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Feb 03 |
252079 |
|
Why do spacecraft need heat shields coming back to Earth but not leaving? (Intermediate)
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Jan 03 |
60590 |
|
Why are Saturn's rings flat? (Intermediate)
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Dec 02 |
84099 |
|
How big a change in the Earth's orbit would be required to destroy all life? (Intermediate)
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Nov 02 |
89372 |
|
Will the Leonid meteor shower go away? (Beginner)
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Nov 02 |
51807 |
|
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 |
58333 |
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What are the names of the earth, moon, sun, and solar system? (Beginner)
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Oct 02 |
489204 |
|
What's that dark spot on the Sun? (Beginner)
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Aug 02 |
56902 |
|
How can I calculate the position or path of the Sun for a given time and location? (Intermediate)
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Aug 02 |
113908 |
|
Does the Moon rotate? Are there other moons that always keep one face toward their planet? (Intermediate)
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Jul 02 |
459812 |
|
What would happen if an asteroid 10 kilometers across hit the Earth? (Beginner)
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Jul 02 |
237978 |
|
Can astronauts produce water in space? (Intermediate)
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Jun 02 |
63607 |
|
Did life originate on Earth, or did it come from somewhere else? (Intermediate)
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May 02 |
75346 |
|
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
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May 02 |
893924 |
|
Why are the compositions of comets and asteroids different? (Intermediate)
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May 02 |
59582 |
|
Who discovered each planet? (Intermediate)
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May 02 |
156202 |
|
How do we feel heat? (Intermediate)
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May 02 |
93242 |
|
How was the starting point for the Julian Date system chosen? (Advanced)
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May 02 |
63708 |
|
Why is it called astronomy when all the other sciences end in -ology? (Beginner)
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May 02 |
47154 |
|
How does libration allow us to see more than 50% of the Moon? (Advanced)
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Apr 02 |
47586 |
|
Why are stars and planets round? (Beginner)
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Feb 02 |
165237 |
|
Did astronauts really go to the Moon, or is it a hoax? (Beginner)
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Feb 02 |
120984 |
|
How much time do astronomers spend looking through telescopes? (Beginner)
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Jan 02 |
60548 |
|
How much money do astronomers make? (Intermediate)
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Jan 02 |
171255 |
|
What's the best college for astronomy? (Intermediate)
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Jan 02 |
98883 |
|
What kind of schooling is necessary to become an astronomer? (Intermediate)
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Jan 02 |
156841 |
|
What skills do astronomers need? (Beginner)
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Jan 02 |
108680 |
|
What's the best thing about being an astronomer? (Beginner)
|
Jan 02 |
59494 |
|
What do I need to do to become an astronomer? (Beginner)
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Jan 02 |
151949 |
|
What kinds of jobs do astronomers do? (Intermediate)
|
Jan 02 |
90487 |
|
What's the difference between astronomy and astrology? (Beginner)
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Jan 02 |
238691 |
|
What's the difference between astronomy and astrophysics? (Intermediate)
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Jan 02 |
119807 |