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Can I see details on Venus?
(Intermediate)
Can we hear sound on Titan?
(Intermediate)
How close does a supernova need to be to damage the Earth's environment?
(Intermediate)
How do solar flares affect airline pilots?
(Intermediate)
How long is twilight on the Moon?
(Beginner)
If the sun went out and our atmosphere froze solid, what color would it be?
(Intermediate)
Is it sensible to consider terraforming Mars?
(Beginner)
Is the green flash real?
(Beginner)
Is there oxygen in the atmospheres of other planets?
(Intermediate)
What are some of the effects of solar flares on Earth?
(Intermediate)
What are the advantages and disadvantages of using a telescope in space?
(Intermediate)
What are the atmospheres of Mars and Pluto like?
(Intermediate)
What color are meteors?
(Beginner)
What color is each planet?
(Intermediate)
What is the hottest time of day?
(Beginner)
What was different on Mars in the past to allow liquid water to be present?
(Intermediate)
Why are telescopes located in remote places?
(Intermediate)
Why are the Moon and Sun sometimes orange or red?
(Beginner)
Why can we see the sun's image before sunrise and after sunset?
(Beginner)
Why can't you see stars during the day?
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On which days can I see the Moon in the evening / morning and why is this so? (Beginner)
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What what a black hole merger look like from a telescope? (Advanced)
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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)
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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)
How long could life on Earth survive if the Sun stopped shining? (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)
If gravity isn't a force, how does it accelerate objects? (Advanced)
What would happen if an asteroid 10 kilometers across hit the Earth? (Beginner)
How does the position of Moonrise and Moonset change? (Intermediate)
Why do the planets orbit the sun? (Beginner)
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)
How long could life on Earth survive if the Sun stopped shining? (Beginner)
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 is the difference between a "star" and a "sun"? (Beginner)
Why do the planets orbit the sun? (Beginner)
What is that ring (or rainbow) around the moon? (Beginner)
At what speed does the Earth move around the Sun? (Beginner)
Which planet is most similar to Earth? (Intermediate)
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)
What is the difference between a "star" and a "sun"? (Beginner)
Why do the planets orbit the sun? (Beginner)
How long could life on Earth survive if the Sun stopped shining? (Beginner)
At what speed does the Earth move around the Sun? (Beginner)
Can artificial gravity be created in space? (Intermediate)
Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
Which planet is most similar to Earth? (Intermediate)
How does the position of Moonrise and Moonset change? (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)
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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