Moon evolution video
Discussion
http://uk.news.yahoo.com/stunning-nasa-video-shows...
I can't find the video on the NASA site, nor the LRO site, so there's an advert to sit through but it's worth it. A clever litte - 2.41 minutes - video.
I can't find the video on the NASA site, nor the LRO site, so there's an advert to sit through but it's worth it. A clever litte - 2.41 minutes - video.
So this is from just after the moon was created by another planet size object smashing into earth and knocking a huge hunk out which became the moon? It might have been good to see that too!
Also, if the above is true, why when there were massive asteroid hits to the moon creating lots of debris, does the moon not have a moon?
Also, if the above is true, why when there were massive asteroid hits to the moon creating lots of debris, does the moon not have a moon?
It may have some tiny satellites of its own - they just haven't been spotted yet.
However, the moon is a small body with weak gravity so impact ejecta could easilly reach escape velocity and fly off into orbit around the sun, or earth, rather than orbiting the moon.
Although the impact theory is favoured at the moment it is still only a theory. The evidence behind it is the fact that there are so few "volatiles" found in moon rocks. In other words, elements and compounds that possess a low boiling point (e.g. water) are far less common in lunar rocks than on earth.
Recent discoveries show that there is more water on the moon than previously thought so the impact theory could be looking a bit shaky already.
However, the moon is a small body with weak gravity so impact ejecta could easilly reach escape velocity and fly off into orbit around the sun, or earth, rather than orbiting the moon.
Although the impact theory is favoured at the moment it is still only a theory. The evidence behind it is the fact that there are so few "volatiles" found in moon rocks. In other words, elements and compounds that possess a low boiling point (e.g. water) are far less common in lunar rocks than on earth.
Recent discoveries show that there is more water on the moon than previously thought so the impact theory could be looking a bit shaky already.
Eric Mc said:
It may have some tiny satellites of its own - they just haven't been spotted yet.
However, the moon is a small body with weak gravity so impact ejecta could easilly reach escape velocity and fly off into orbit around the sun, or earth, rather than orbiting the moon.
Although the impact theory is favoured at the moment it is still only a theory. The evidence behind it is the fact that there are so few "volatiles" found in moon rocks. In other words, elements and compounds that possess a low boiling point (e.g. water) are far less common in lunar rocks than on earth.
Recent discoveries show that there is more water on the moon than previously thought so the impact theory could be looking a bit shaky already.
Eric, Eric, Eric.However, the moon is a small body with weak gravity so impact ejecta could easilly reach escape velocity and fly off into orbit around the sun, or earth, rather than orbiting the moon.
Although the impact theory is favoured at the moment it is still only a theory. The evidence behind it is the fact that there are so few "volatiles" found in moon rocks. In other words, elements and compounds that possess a low boiling point (e.g. water) are far less common in lunar rocks than on earth.
Recent discoveries show that there is more water on the moon than previously thought so the impact theory could be looking a bit shaky already.
You of all people, in this forum of all places, should know that when you say "theory" you should mean "theory" and not say "theory" when you mean "hypothesis".
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