Installed in the year 1410, this giant outdoor clock in downtown Prague has been ticking for over 6 centuries, and is the world’s oldest astronomical clock still in operation.
The "flash" of the impact was large enough to be seen through the telescope from Earth.The size of Jupiter's Great Red Spot is 16,350 km (April 2017). This spot is 1.3 times the size of Earth's.There are other spots on...
Hydrogen was everywhere at the beginning of the universe, ??.??% of all matter. Call it God or the Creator because everything came from it. ??% of the current universe is hydrogen. ??% helium and the remaining two percent is everything...
Genuinely when someone doesn’t know afterward its up to other
visitors that they will help, so here it takes place.