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Can any galaxies be seen with the naked eye?
(Beginner)
Could there be life in the galaxies nearest to the Milky Way?
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Could you tell me about the life cycle of galaxies?
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Do we really observe the edges of galaxies at different epochs?
(Advanced)
Does the Sun move around the Milky Way?
(Intermediate)
How do galaxies collide in an expanding universe?
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How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda?
(Advanced)
If I were traveling through space, could I see distant galaxies with my own eyes?
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Is Andromeda part of the Milky Way? Where can I find them in the sky?
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Is the Local Group expanding along with the entire Universe?
(Intermediate)
Is the Milky Way a collision of two galaxies?
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What will happen to the Milky Way in the future?
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Why are there blue shifted galaxies?
(Intermediate)
Will the diameter of a cluster of galaxies change with redshift?
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Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate)
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Do galaxies that are receding from us faster than the speed of light disappear from our observations? (Intermediate)
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What is a graviton? (Intermediate)
Why are there high tides during a Full Moon? (Intermediate)
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What caused the Big Bang and created the Universe? (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)
When was the last time all of the planets were aligned? (Beginner)
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 evidence supporting the nebula theory of Solar System formation? (Intermediate)
How do you measure the distance between Earth and the Sun? (Intermediate)
At what speed does the Earth move around the Sun? (Beginner)
How does the location of sunrise and sunset change throughout the year? (Advanced)
What is the difference between a "star" and a "sun"? (Beginner)
What color is each planet? (Intermediate)
When was the last time all of the planets were aligned? (Beginner)
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)
How do you measure the distance between Earth and the Sun? (Intermediate)
At what speed does the Earth move around the Sun? (Beginner)
What is the difference between a "star" and a "sun"? (Beginner)
What is the evidence supporting the nebula theory of Solar System formation? (Intermediate)
How are light and heavy elements formed? (Advanced)
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)
When was the last time all of the planets were aligned? (Beginner)
How do you measure the distance between Earth and the Sun? (Intermediate)
At what speed does the Earth move around the Sun? (Beginner)
How does the location of sunrise and sunset change throughout the year? (Advanced)
What is the difference between a "star" and a "sun"? (Beginner)
What is the evidence supporting the nebula theory of Solar System formation? (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)
How long does it take for the Sun's light to reach us? (Beginner)
What is the universe expanding into? (Intermediate)
When will Halley's Comet return? (Intermediate)
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