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Why did craters form 4 to 5 billion years ago?
Between about 4 and 4.5 billion years ago the solar system was rather chaotic. There were many more asteroids and planetoids with unstable orbits. As a result collisions were much more common in the early solar system. Since then most objects with unstable orbits either collided with planets and moons or with the sun or were ejected from the solar system.
Why can THEY still see craters on the moon?
Anyone can see craters on the moon. All you have to do is look at it when it's in the sky. There are billions of craters on the lunar surface with more being added almost daily. There will always be craters on the moon because there is no atmosphere to erode them. The lunar craters only form of erosion is from solar bombardment and being hit by another object.
Approximately how much older are prokaryotes than eukaryotes?
Prokaryotes are more than 2 billion years older than eukaryotes.
When did Mercury get craters?
Each crater on Mercury was left behind by an asteroid or comet that collided with it. Many of the craters are nearly as old as the planet itself, as collisions were far more common when the solar system was young. Other craters may only be a few million years old.
How long can mother earth be around?
Our mother earth can be around for more than billion of years. She have been around for more than 4.5 billion years and she is still here.
What are the saucer like depressions on the moon's surface called?
They are called "craters" and were produced by meteor impacts (the vast majority more than 2 billion years ago).
Why did craters form 4 to 5 billion years ago?
Between about 4 and 4.5 billion years ago the solar system was rather chaotic. There were many more asteroids and planetoids with unstable orbits. As a result collisions were much more common in the early solar system. Since then most objects with unstable orbits either collided with planets and moons or with the sun or were ejected from the solar system.
When did the majority of the craters on mercury form?
Most of the craters probably formed when the solar system was young and large impacts were far more common than they are now.
When did the meteors crash into the moon?
The "high impact" period of our solar systems development seems to have been heavily concentrated in the first 500 million years. By the time the solar system was 500 million years old, (4 billion years ago), the "high impact" period was slowing down. There was a "last hurrah" from 4 billion year ago to 3.8 billion years ago, then it virtually stopped. Almost all the notable craters on the moon's surface were created by impact more than 3.8 billion years ago, according to current astronomical thought.
Who has more craters the earth or the moon?
there are more craters on the moon then on earth
Why can THEY still see craters on the moon?
Anyone can see craters on the moon. All you have to do is look at it when it's in the sky. There are billions of craters on the lunar surface with more being added almost daily. There will always be craters on the moon because there is no atmosphere to erode them. The lunar craters only form of erosion is from solar bombardment and being hit by another object.
Is the earth more than 6 billion years old?
No. The current best estimate is about 4.6 billion years.
Approximately how much older are prokaryotes than eukaryotes?
Prokaryotes are more than 2 billion years older than eukaryotes.
How long ago did earth and your solar system form?
About 4.5 to 4.7 billion years ago. It's difficult to determine it more precisely; we weren't there.
Do the craters cause more gravity on the moon?
No. The craters on the moon do not affect its gravity.
What has existed for at least 3 million years?
The universe has existed for more than 14 billion years, the sun for more than 4 billion years - both well over 3 million years.
How are the craters on mars caused?
The craters are formed by a large object such as an asteroid or a comet. When these large objets hit the surface they form holes. Known as craters. Craters can be many shapes and sizes depending on the object. That's how craters are formed. Mars has a much thinner atmosphere than Earth, so more objects reach the Martian surface intact, and the lack of water, glaciers, and plate tectonic mean the craters last longer than they do on Earth.
