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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?
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(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?
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When will Halley's Comet return? (Intermediate)
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What what a black hole merger look like from a telescope? (Advanced)
Do galaxy mergers have a major impact on star formation rates within the galaxies? (Intermediate)
Our universe is still expanding, does that mean things in our daily life are expanding? (Intermediate)
What was the bright, smoothly moving star that I saw? (Beginner)
What happened to the Arecibo Telescope? (Beginner)
Can I buy or name a star? (Beginner)
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)
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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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Why are most months 30 or 31 days long? (Intermediate)
What what a black hole merger look like from a telescope? (Advanced)
How much money is spent on space exploration? (Intermediate)
Is the Sun always up for exactly 12 hours at the equator? (Beginner)
How can I find the distance to the Sun on any given day? (Advanced)
Why do stars twinkle? (Beginner)
Is the Earth at the centre of the Universe? (Intermediate)
Why does the location of sunrise change? (Intermediate)
Why is a day divided into 24 hours? (Intermediate)
Is it possible to see the full Moon and the Sun simultaneously in high northern latitudes when the Sun doesn't set? (Intermediate)
How do you measure the distance between Earth and the Sun? (Intermediate)
What is the difference between a "star" and a "sun"? (Beginner)
How long could life on Earth survive if the Sun stopped shining? (Beginner)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
At what speed does the Earth move around the Sun? (Beginner)
How does the position of Moonrise and Moonset change? (Intermediate)
How does the location of sunrise and sunset change throughout the year? (Advanced)
What is that ring (or rainbow) around the moon? (Beginner)
If gravity isn't a force, how does it accelerate objects? (Advanced)
Can artificial gravity be created in space? (Intermediate)
If gravity isn't a force, how does it accelerate objects? (Advanced)
How do you measure the distance between Earth and the Sun? (Intermediate)
Why do the planets orbit the sun? (Beginner)
What is the difference between a "star" and a "sun"? (Beginner)
At what speed does the Earth move around the Sun? (Beginner)
Can artificial gravity be created in space? (Intermediate)
Which planet is most similar to Earth? (Intermediate)
How do we know the Milky Way is a spiral galaxy? (Intermediate)
How does the position of Moonrise and Moonset change? (Intermediate)
Are there telescopes that can see the flag and lunar rover on the Moon? (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)
When was the last time all of the planets were aligned? (Beginner)
How long does it take for the Sun's light to reach us? (Beginner)
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