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Did I see the Aurora Borealis as a child?
(Beginner)
Do the Earth's magnetic poles ever change places?
(Intermediate)
Do the Sun's or Earth's magnetic field reverse?
(Intermediate)
How are sunspots formed?
(Intermediate)
How do solar flares affect airline pilots?
(Intermediate)
How do we know that sunspots are associated with the Sun's magnetic field?
(Intermediate)
If nothing can escape a black hole, why do some black holes have jets?
(Intermediate)
What are some of the effects of solar flares on Earth?
(Intermediate)
What causes the aurora?
(Beginner)
Why does Titan, in spite of being smaller than Mars, have an atmosphere more dense than Earth's?
(Intermediate)
Why don't all neutron stars become pulsars?
(Advanced)
Will the magnetic field of the Earth reverse its direction in the future? Will this cause problems?
(Advanced)
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How can I contribute to science as an amateur astronomer? (Advanced)
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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)
Can two galaxies move away from each other faster than the speed of light? (Intermediate)
What is a graviton? (Intermediate)
Why are there high tides during a Full Moon? (Intermediate)
Why is Neptune still considered a planet when Pluto crosses its orbit? (Intermediate)
Could there be objects orbiting interior to Mercury? (Intermediate)
Have the inner planets cleared their neighborhood? (Intermediate)
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)
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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What color is each planet? (Intermediate)
What is the difference between a "star" and a "sun"? (Beginner)
What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
Why do we not have eclipses every month? (Beginner)
How are light and heavy elements formed? (Advanced)
When was the last time all of the planets were aligned? (Beginner)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
What are constellations used for? (Intermediate)
How does the position of Moonrise and Moonset change? (Intermediate)
How far is each planet from Earth? (Intermediate)
What color is each planet? (Intermediate)
What is that ring (or rainbow) around the moon? (Beginner)
How does the position of Moonrise and Moonset change? (Intermediate)
When was the last time all of the planets were aligned? (Beginner)
What is the difference between a "star" and a "sun"? (Beginner)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
Why do we not have eclipses every month? (Beginner)
Why are the Moon and Sun sometimes orange or red? (Beginner)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
Why is the moon in a different place every night? (Beginner)
What color is each planet? (Intermediate)
What is that ring (or rainbow) around the moon? (Beginner)
How does the position of Moonrise and Moonset change? (Intermediate)
When was the last time all of the planets were aligned? (Beginner)
What is the difference between a "star" and a "sun"? (Beginner)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
Why do we not have eclipses every month? (Beginner)
Why are the Moon and Sun sometimes orange or red? (Beginner)
Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
Why is the moon in a different place every night? (Beginner)
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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