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Jul
21
reviewed Close Energy required for light speed
Jul
21
reviewed Leave Open what planet is the most radioactive?
Jul
2
reviewed Approve Are space telescopes completely out of the earth's atmosphere?
Jul
2
reviewed Approve Are space telescopes completely out of the earth's atmosphere?
Jul
1
reviewed No Action Needed Years, Months, Day, and Weeks?
Jun
29
reviewed No Action Needed Which is the shape of the sky?
Jun
29
reviewed No Action Needed When will the next summer solstice and a full moon coincide? What day?
Jun
29
reviewed Reviewed How does gravity interact with a photon?
Jun
29
reviewed Leave Open What to do after first year of amateur astronomy?
Jun
29
reviewed Approve Which is the shape of the sky?
Jun
26
reviewed Close If nothing can pass the schwarzschild radius, how can black holes even start?
Jun
25
reviewed No Action Needed Has the great Andromeda Galaxy ever collided with any galaxies?
Jun
24
reviewed No Action Needed Is the Milky Way Visible from Nebraska?
Jun
22
reviewed No Action Needed What is the name of our Solar System?
Jun
22
reviewed No Action Needed What's the fastest moving object in the universe?
Jun
22
reviewed Looks OK Metal rich or metal poor?
Jun
12
reviewed No Action Needed What would be the practical consequences (on earth) if the Moon was not tidally locked?
Jun
3
reviewed No Action Needed How did Meeus calculate equinox and solstice dates?
Jun
3
reviewed Approve What's in the center of a Galaxy?
Jun
2
comment Interstellar movie: What is the “portal” to the other galaxy?
In the movie they clearly say it is a wormhole.