Top network posts

• 101 How big would my telescope have to be if I wanted to see the Mars rover from my backyard?
• 45 Why don't we use weights to store energy?
• 33 If Energy can be converted into mass, why can it not be converted into charge?
• 28 Does the Earth's rotation affect redshift measurements?
• 26 Is the fact that 100 kPa equals about 1 atmosphere accidental?
• 25 How to calculate how many photons are in the universe?
• 24 Why do convex lenses not disperse light like prisms, given that entry and exit points aren't parallel?
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