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The Moon
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When will humans travel to Mars and revisit the Moon?
(Intermediate)
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)
Are Earth and the Moon "twin planets"?
(Beginner)
Are there any new craters on the Moon?
(Intermediate)
Are there solar tides?
(Beginner)
Are there telescopes that can see the flag and lunar rover on the Moon?
(Beginner)
Can a lunar and a solar eclipse happen in the same month? When will this happen next?
(Intermediate)
Can astronomers observe anything when the moon is full?
(Beginner)
Can I build an instrument to measure the size of the Sun and of the Moon?
(Intermediate)
Can I buy land on the Moon?
(Intermediate)
Can moons have moons?
(Intermediate)
Can other terrestrial moons be (or have been) stable?
(Advanced)
Can two lunar eclipses occur in the same month?
(Advanced)
Can we prove that the Moon isn't hollow?
(Intermediate)
Can you fire a gun on the Moon?
(Intermediate)
Did astronauts really go to the Moon, or is it a hoax?
(Beginner)
Did I find a rock that came from the Moon?
(Beginner)
Did the Moon or planets form in a manner similar to that of Earth?
(Beginner)
Do asteroids ever do anything good in the Solar System?
(Beginner)
Does lunar gardening really work?
(Beginner)
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What is the universe expanding into? (Intermediate)
What do I need to do to become an astronomer? (Beginner)
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What color is each planet? (Intermediate)
How are light and heavy elements formed? (Advanced)
What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
How far is each planet from Earth? (Intermediate)
How does the location of sunrise and sunset change throughout the year? (Advanced)
What is the evidence supporting the nebula theory of Solar System formation? (Intermediate)
What is the difference between a "star" and a "sun"? (Beginner)
Why do the planets orbit the sun? (Beginner)
Can artificial gravity be created in space? (Intermediate)
What are the requirements for being a planet? (Beginner)
What color is each planet? (Intermediate)
What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
How are light and heavy elements formed? (Advanced)
How far is each planet from Earth? (Intermediate)
Are aliens or UFOs real? (Beginner)
How does the location of sunrise and sunset change throughout the year? (Advanced)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
What is the difference between a "star" and a "sun"? (Beginner)
When was the last time all of the planets were aligned? (Beginner)
What is the evidence supporting the nebula theory of Solar System formation? (Intermediate)
What color is each planet? (Intermediate)
How are light and heavy elements formed? (Advanced)
What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
How far is each planet from Earth? (Intermediate)
What is the difference between a "star" and a "sun"? (Beginner)
How is it proved that the Universe is expanding? (Intermediate)
How does the location of sunrise and sunset change throughout the year? (Advanced)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
When was the last time all of the planets were aligned? (Beginner)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
What's going to happen on December 21st 2012? (Intermediate)
What color is each planet? (Intermediate)
At what speed does the Earth move around the Sun? (Beginner)
How far is each planet from Earth? (Intermediate)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
How do you measure the distance between Earth and the Sun? (Intermediate)
Why do the planets orbit the sun? (Beginner)
What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
How long does it take for the Sun's light to reach us? (Beginner)
When was the last time all of the planets were aligned? (Beginner)
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Home
Our Solar System
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Galaxies
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Timekeeping
SETI & Extraterrestrial Life
Physics
General Physics
The Theory of Relativity
People & Astronomy
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Space Exploration & Astronauts
The History of Astronomy
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