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Questions to do with celestial comets.
4
votes
Accepted
Which are the current Near-Earth comets that have the closest approach to Venus?
As seen from the last part of the entry copied below, the first comet listed is the Hale-Bopp comet, which is actually a long-period comet that came close to Earth in the 1990s and now is back on its way … Below us what I am able to find for the numbers in the Hale-Bopp entry:
CJ95O010 -- Code for comet designation, compare with the C/1995 O10 entry
1997 03 29.6531 -- Date of perihelion, the third number …
8
votes
What forms of water ice have been observed and verified in the solar system?
Actually, Ice VII has been discovered in diamonds on Earth. The water is first trapped in the diamond as the latter is formed deep in the mantle. Then when the diamond cools at the surface its rigid …