Old the planets are. Billions of years old are all of them.
7,000,000,000-4,400,000
4.6 billion
In most cases, the moons are about as old as the planets they orbit, perhaps slightly younger. Most objects in the solar system formed when the solar system did.
All the planets of our solar system are believed to have formed at about the same period in time.
brightness, lines on them, and how old they are
All the planets are prehistoric (meaning they predate written history) since all of them are 4.5 billion years old.
It is estimated that the Solar System is 4.6 billion years old including Earth and the other planets.
I think its Holst from the planets
The planets names are derived from Roman and Greek mythology,except for thr Earth which is Germanic and old English in orgin.
i think that on mercury and mars
go to that website And it will show you how old would you be on other planets http://www.exploratorium.edu/ronh/weight/
Mars is about 4.6 billion years old, just like the other planets of the solar system.