0
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.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
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
Is most of the evidence for running water on Mars recent or relatively old?
Believed to be old, to have free running water on a planet surface requires a "decent" atmosphere otherwise the water would just vapourise. The majority of the martian atmosphere froze out billions of years ago as the sun cooled and siesmic activity declined (waning heat sources). This lack of atmosphere means no drastic weather, no rain ,no wind so goegraphically not much has changed up there hence the preservation of water channels.
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.
How do scientist study ancient atmosphere?
Scientist study ancient atmosphere by collecting pieces of the early atmosphere that were trapped and formed into rocks and minerals. They take these piece and crush them up to clearly see them and analyze them. Rocks and fossils allow scientist to collect more information of what the atmosphere looked like when they were created.
Is the ionosphere is one of the layers of the atmosphere?
Yes, it is part of the Thermosphere, the last part of the atmosphere before the Exosphere, 'outer space'.& its after the Mesosphere, it also is stuck with poor old Ionosphere.
Minerals in old rock suggest that earths early atmosphere had little or no free oxygen?
Yes
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".
Is Saturn a heavy atmosphere or no atmosphere?
ATMOSPHERE
Does mars have heavy atmosphere or no atmosphere?
no atmosphere
Does mercury have a heavy atmosphere or no atmosphere?
No atmosphere
