A photograph of the Hubble Ultra Deep Field. Every single little dot of light you see in this picture is an entire galaxy. Over 10,000 in this image alone.
A bunch of Astronomical facts I find interesting. Hope 你 enjoy them and learn something new :)
- Every 秒 there are 4,000 stars that are born and 30 supernovae that take place in the observable universe.
- The 心 of a 星, 星级 reaches 16 million °C. A grain of sand this hot would kill someone 150 km away.
- 太空 is not a complete vacuum, there are about 3 atoms per cubic meter of space.
- The coldest place in the universe is on Earth. In Wolfgang Ketterles lab in Massachusetts. 0.000000000001 degrees Kelvin.
- Most of the universe is dark. Only 4% of the universe is what we can actually...
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