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The Earth is about 4.5 billion years old and has had an atmosphere since it formed, but about 3.8-4.1 billion years ago there was believed to be the Late Heavy Bombardment, where a planetesimal roughly the size of Mars hit the Earth, breaking off a large chunk that formed into the Moon. This impact would have obliterated the atmosphere, but it has reformed naturally since then.
So, the answer to your question is approximately 4 billion years old.
What else can I help you with?
How old is the earths atmosphere?
The earth's atmosphere is very old. It was formed when earth was formed.
Does mercury have a heavy atmosphere or no atmosphere?
No atmosphere
Does Saturn have an atmosphere like Earth?
Actally Saturn does not have an atmosphere at all. Its 7 rings each have there own atmosphere.
What is a example of a solid a liquid and gas in the atmosphere?
Gas in atmosphere: argon Liquid in atmosphere: water (as rain) Solid in atmosphere: dust
How does the lack of atmosphere affect the temperatures on mercury?
Mercury has the thinnest atmosphere so the fast winds from blown up stars go to the thin atmosphere, it will be easier to get in and change the atmosphere
How old is the earths atmosphere?
The earth's atmosphere is very old. It was formed when earth was formed.
What is the most gas in are atmosphere?
"in our atmosphere" you 2 year old illiterate. and its Nitrogen
What little town is known for its old west atmosphere and architecture?
rome
How many mm of mercury in an atmosphere?
This is an old measurement, but 760 mm is one atmosphere.
Telescopes are put in space to stop interference from?
... from the atmosphere.... from the atmosphere.... from the atmosphere.... from the atmosphere.
Where are atmospheric chemicals found?
In the atmosphere. "Atmospheric" means "related to the atmosphere".In the atmosphere. "Atmospheric" means "related to the atmosphere".In the atmosphere. "Atmospheric" means "related to the atmosphere".In the atmosphere. "Atmospheric" means "related to the atmosphere".
What happens to old satellites?
Old satellites orbiting near the Earth eventually fall back into the atmosphere and burn. Satellites orbiting farther away stay in orbit indefinitely.
Can I burn old motor oil in my oil burning furnace?
No you cannot. Old motor oil contains harmful additives that can be released back into the atmosphere and can make you sick. Don't do it.
What displays light when burning up in earth's atmosphere?
Virtually anything falling through earths atmosphere from space will heat up to the point of incandescence, that is, it will "light up". A piece of rock, the remains of an old satellite, etc.
Does mars have heavy atmosphere or no atmosphere?
no atmosphere
Does mercury have a heavy atmosphere or no atmosphere?
No atmosphere
Is Saturn a heavy atmosphere or no atmosphere?
ATMOSPHERE
