When it gets destroyed by an asteroid or meteorite or when the Sun becomes a red giant and consumes the entire planet.
As for the population on Earth, it's when we nuke ourselves due to our own selfishness and stupidity.
Gee, everything's fine so far.
Do what you like with the person you like
The students in Armenia celebrate the first and the last day of school.
earths rotation
Mars.
24 hours, like any other day
24 hours.
If you feel like vomiting after the last day of you period, you may just have a virus. There should be no reason to vomit just over your period.
Yes as Pluto is the smallest and the last planet in the solar system, it is smaller then the earths moons.
Because the earths magnetic poles move around from year to year, and even day to day.
There is no point on the earths surface that experiences night for 24 hours every day.
the earths rotation