Neil deGrasse Tyson answers questions

American astrophysicist, Ph.D., writer, popularizer of science Neil Degrass Tyson answers questions from readers of Time magazine. This great person has a website and twitter . For example, today I learned from his twitter that due to the refraction of light, dawn comes five minutes earlier than the sun rises, and sunset comes five minutes later. This means that on March 21, on the day of equinox, the night for us did not equal the day - the night was 10 minutes shorter.

In general, you can tell a lot about this person, but I think it is better to listen to him.