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• Why is the moon exactly the right size and distance from the Earth so that it fits neatly over the sun during a solar eclipse?

  Asked by luigirovatti | 13 responses

• What if in 2044 an asteroid will obliterate Earth?

  Asked by Ltryptophan from iPhone | 17 responses

• Was Erasthothenes truly debunked by this video?

  Asked by mazingerz88 | 5 responses

• What makes a bright star-like blink in the night sky, a meteor?

  Asked by Zaku | 14 responses

• Could a video recording ever create a true reflection?

  Asked by Ltryptophan from iPhone | 9 responses

• Why was it such a big deal to take a picture of a black hole?

  Asked by Dutchess_III | 8 responses

• Do you think The Black Hole is still there?

  Asked by josie | 33 responses

• Are any of the properties of liquid water responsible for the nature and tremendous power of hurricane like storms?

  Asked by Ltryptophan | 30 responses

• Is there such a thing as going to Mars, and if not why not?

  Asked by flo | 28 responses

• Who's watching the Lunar eclipse today?

  Asked by rebbel | 18 responses

• What astronomical events would happen first?

  Asked by RedDeerGuy1 | 3 responses

• A star, that will go supernova, apparently, can become a black hole, or a neutron star; how does that work?

  Asked by rebbel | 7 responses

• What would it take to create microwave energy without electricity?

  Asked by Ltryptophan from iPhone | 12 responses

• Will you get up tonight to see the Perseid Meteor shower?

  Asked by LuckyGuy | 16 responses

• If the planet Mars was able to sustain an Earth-like atmosphere, what kinds of temperatures and life could it support?

  Asked by Yellowdog | 8 responses

• What is the benefit of cow mouth shaped plots? How is this shape formed ?

  Asked by anilhicdelhi | 10 responses

• Did humans really go to the Moon?

  Asked by basstrom188 | 12 responses

• Is there a name for the imaginary / theoretical Solar plane which the planets orbit within?

  Asked by Yellowdog | 5 responses

• Why do stars twinkle and planets not?

  Asked by RedDeerGuy1 | 6 responses

• A question about planet "Jupiter"?

  Asked by Samantha4One | 9 responses

• What are the Do It Yourself ways of watching the solar eclispse?

  Asked by flo | 11 responses

• Was the eclipse a bust in your area?

  Asked by NomoreY_A | 39 responses

• Which is the best place to see the northern lights (aurora borealis)?

  Asked by 2davidc8 | 9 responses

• What are your thoughts. hopes, and expectations about extraterestial life? Is the prospect of other life-forms in space, as it really might be, all that interesting?

  Asked by Yellowdog | 15 responses

• Was the moon gigantic on Friday June 9th, 2017?

  Asked by flo | 12 responses

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