1,690, but you'd need some pretty amazing glue.
1690
7000 pencils
Precipitation that does not reach the ground is called 'virga'. If it does reach the ground, it's called 'praecipitatio'.
Several. In fact, it only has stairs to the second level. The elevators are the only way to get to the top.
approximately 114 steps
In vacuum they reach ground exactly at the same time. In a medium other than vacuum the ball will reach ground first.
The earth's atmosphere doesn't let these rays reach the ground, so the telescopes are placed in orbit where they can receive the rays.
if you mean by visiting , millions have already been there with many more millions to follow.
Answer your self dont know
Ground water is on or in the ground, it does not reach it.
Well, the trunk of the willow clearly touches the ground ;) but yes, willow tree branches can reach the ground, and old willows' branches often do.
The ball which you drop from 5 feet will reach the ground first.
Meteorites