When some one invented them.
Mars has been in space for as long as any other planet, such as, earth.
4.5 billion years. Possibly more, but if so, that extra time would be because of the dust that Jupiter was before it formed and became the largest planet in our solar system.
..... 1234 since ur mamma has been around
Mercury takes 88 days to revolve around the Sun.
The moon orbits earth every 27.322 days.
it is a fish that has been around since the planet earth has existed.
Since the planet was made.
Modern humans have been around for 200,000 years.
mars has been a planet for about 4.6 million years.
Saturn has long been known for its ring system but more recently rings have also been discovered around Jupiter, Uranus and Neptune.
The Spanish Mustangs have been around (in the Americas) for over 500 years. Stallions, on the other hand, far longer than that: stallions have been around ever since horses or Equids have existed on Planet Earth.
The speed at which the planet moves and its distance from the sun both impact how long it takes to go around the sun. The bigger the orbit , the longer the planet's year.
Mars has been in space for as long as any other planet, such as, earth.
A year.
A long year.
how long has deforestation been around
As long as guns have been around.