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Questions and Answers

how long does it take for the heat and light from the sun to reach the earth?

Questions and Answers

Is the earth warming or not?

Questions and Answers

Why is there so little difference between low and high tide in the Mediterranean?

Questions and Answers

I heard that the universe is expanding, but sometimes I also hear that the universe will shrink back. Is that also the case...

Questions and Answers

Did the Big Bang make a lot of noise or not?

Questions and Answers

Can the sun suddenly go out?

Questions and Answers

Could there be a connection between the way the earth revolves around the sun and the way an electron orbits a nucleus (besides that...

Questions and Answers

How do you measure the level of the sea?