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Could a planetary system survive if its star merged with another, or if its star went supernova?
(Intermediate)
Could you tell me about the life cycle of galaxies?
(Intermediate)
How are galaxies formed?
(Intermediate)
How do galaxies collide in an expanding universe?
(Intermediate)
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda?
(Advanced)
Is the Milky Way a collision of two galaxies?
(Beginner)
Is there a beginning and an end to a galaxy's life?
(Intermediate)
Is time travel possible using merging black holes?
(Intermediate)
What happens when an antimatter black hole collides with a matter blackhole?
(Intermediate)
What happens when galaxies collide?
(Beginner)
What happens when two black holes get too close?
(Intermediate)
What is the largest galaxy?
(Beginner)
What will happen to the Milky Way in the future?
(Beginner)
What would happen if there was a collision between two white dwarfs?
(Advanced)
What would happen if two stars collided?
(Intermediate)
Why are astronomers interested in gravitational waves?
(Intermediate)
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How does the parachute in a model rocket work? (Advanced)
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If I were hypothetically wearing a spacesuit and sitting on one of the Voyager space probes at their current positions in space, how much light would I have? (Intermediate)
What makes certain lunar eclipses so special? (Beginner)
Why is Earth's core molten? (Intermediate)
What will happen to Earth's tides as the moon moves away from us? (Intermediate)
How can spiral galaxies keep their shape? (Advanced)
Does a black hole have a "surface"? (Intermediate)
How can you link telescopes to make a bigger "effective telescope"? (Intermediate)
What should I know about the upcoming Solar Eclipse (2017)? (Beginner)
Do galaxies that are receding from us faster than the speed of light disappear from our observations? (Intermediate)
Why are astronomers interested in gravitational waves? (Intermediate)
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What is the universe expanding into? (Intermediate)
What do I need to do to become an astronomer? (Beginner)
What's the difference between astronomy and astrology? (Beginner)
Why is looking out into space the same as looking back in time? (Beginner)
Can we find the place where the Big Bang happened? (Intermediate)
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Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
When was the last time all of the planets were aligned? (Beginner)
How far is each planet from Earth? (Intermediate)
What color is each planet? (Intermediate)
Can artificial gravity be created in space? (Intermediate)
What is the difference between a "star" and a "sun"? (Beginner)
How does the location of sunrise and sunset change throughout the year? (Advanced)
Why are the Moon and Sun sometimes orange or red? (Beginner)
Is the distance from the Earth to the Sun changing? (Advanced)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
What color is each planet? (Intermediate)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
How far is each planet from Earth? (Intermediate)
Why are the Moon and Sun sometimes orange or red? (Beginner)
How does the position of Moonrise and Moonset change? (Intermediate)
What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
When was the last time all of the planets were aligned? (Beginner)
Is the distance from the Earth to the Sun changing? (Advanced)
Why do airplanes take longer to fly West than East? (Intermediate)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
What color is each planet? (Intermediate)
How far is each planet from Earth? (Intermediate)
What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
What is the difference between a "star" and a "sun"? (Beginner)
When was the last time all of the planets were aligned? (Beginner)
Why do airplanes take longer to fly West than East? (Intermediate)
How does the location of sunrise and sunset change throughout the year? (Advanced)
Can artificial gravity be created in space? (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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