|
The Moon slows the Earth's rotation, but how fast was it spinning billions of years ago? (Intermediate)
|
May 06 |
120042 |
|
Where do planetary rings come from, and what are they made of? (Beginner)
|
Aug 05 |
87924 |
|
Is there oxygen in the atmospheres of other planets? (Intermediate)
|
Aug 05 |
135046 |
|
Does the Moon rotate? (Beginner)
|
Aug 04 |
90198 |
|
How can we tell what the interiors of planets are like? (Advanced)
|
Jun 04 |
82296 |
|
How long has there been water on Earth? (Intermediate)
|
Apr 04 |
94967 |
|
How fast does the Earth go at perihelion and aphelion? (Intermediate)
|
Mar 04 |
138246 |
|
How do unmanned space probes avoid running into things? (Beginner)
|
Nov 03 |
76271 |
|
Why did the Pioneer and Voyager take only 2 years to reach Jupiter, while Galileo and Cassini took more than 5 years? (Intermediate)
|
Nov 03 |
78592 |
|
Why doesn't the hydrogen on Jupiter explode? (Intermediate)
|
Sep 03 |
62541 |
|
What do astronauts eat in space? Can they grow food? (Beginner)
|
Feb 03 |
260283 |
|
Why do spacecraft need heat shields coming back to Earth but not leaving? (Intermediate)
|
Jan 03 |
69656 |
|
Why are Saturn's rings flat? (Intermediate)
|
Dec 02 |
95035 |
|
How big a change in the Earth's orbit would be required to destroy all life? (Intermediate)
|
Nov 02 |
106381 |
|
Will the Leonid meteor shower go away? (Beginner)
|
Nov 02 |
58744 |
|
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)
|
Nov 02 |
67034 |
|
What are the names of the earth, moon, sun, and solar system? (Beginner)
|
Oct 02 |
564947 |
|
What's that dark spot on the Sun? (Beginner)
|
Aug 02 |
64293 |
|
How can I calculate the position or path of the Sun for a given time and location? (Intermediate)
|
Aug 02 |
127348 |
|
Does the Moon rotate? Are there other moons that always keep one face toward their planet? (Intermediate)
|
Jul 02 |
479672 |
|
What would happen if an asteroid 10 kilometers across hit the Earth? (Beginner)
|
Jul 02 |
307755 |
|
Can astronauts produce water in space? (Intermediate)
|
Jun 02 |
73818 |
|
Did life originate on Earth, or did it come from somewhere else? (Intermediate)
|
May 02 |
82720 |
|
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
|
May 02 |
989949 |
|
Why are the compositions of comets and asteroids different? (Intermediate)
|
May 02 |
67556 |
|
Who discovered each planet? (Intermediate)
|
May 02 |
204900 |
|
How do we feel heat? (Intermediate)
|
May 02 |
110912 |
|
How was the starting point for the Julian Date system chosen? (Advanced)
|
May 02 |
73929 |
|
Why is it called astronomy when all the other sciences end in -ology? (Beginner)
|
May 02 |
55867 |
|
How does libration allow us to see more than 50% of the Moon? (Advanced)
|
Apr 02 |
54973 |
|
Why are stars and planets round? (Beginner)
|
Feb 02 |
180356 |
|
Did astronauts really go to the Moon, or is it a hoax? (Beginner)
|
Feb 02 |
129525 |
|
How much time do astronomers spend looking through telescopes? (Beginner)
|
Jan 02 |
68774 |
|
How much money do astronomers make? (Intermediate)
|
Jan 02 |
178886 |
|
What's the best college for astronomy? (Intermediate)
|
Jan 02 |
107579 |
|
What kind of schooling is necessary to become an astronomer? (Intermediate)
|
Jan 02 |
166967 |
|
What skills do astronomers need? (Beginner)
|
Jan 02 |
120313 |
|
What's the best thing about being an astronomer? (Beginner)
|
Jan 02 |
66788 |
|
What do I need to do to become an astronomer? (Beginner)
|
Jan 02 |
183491 |
|
What kinds of jobs do astronomers do? (Intermediate)
|
Jan 02 |
96354 |
|
What's the difference between astronomy and astrology? (Beginner)
|
Jan 02 |
274383 |
|
What's the difference between astronomy and astrophysics? (Intermediate)
|
Jan 02 |
140277 |