How many years would a radio signal take to reach the Andromeda galaxy?

Answer In a vacuum, radio waves travel at the speed of light. Since the Andromeda galaxy, the closest galaxy to us, is 2.9 million light years away from Earth, it would take radio waves 2.9 million years ... Read More »

Top Q&A For: How many years would a radio signal take to rea...

How long did it take NASA to reach the moon?

Does rice grow from rice grains?

AnswerYes, the grain pretty much is the seed. But when you buy it, its sort of different. When you buy it, the grain is all dried up, so all you can do is cook it. Actually the endosperm is protec... Read More »

How long does it take for a pulse of laser light to reach the moon&bounce back to earth?

The speed of light is 186,000 miles per second. The average distance between Earth and the moon is 238,857 miles. With these numbers, we can calculate that it takes light 2.568 seconds to go to the... Read More »

The Parts of Rice Grains?

Rice is the one of the most consumed grains in the world, second only to wheat, according to John Griffith Vaughan and Catherine Geissler's book "The New Oxford Book of Food Plants." Oryza sativa ... Read More »