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- 2013-4-12
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- 1970-1-1
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T2 2'28'45
T3 2'06'32
T4 2'17'48
T5 1'37'28
T6 1'18'50
Obstacle: 18'42’20
10 unexpected, intriguing facts about the stars of our universe
1.Every star you see in the night sky is bigger and brighter than our sun.(some data)
2. You can’t see millions of stars on a dark night
3.heated objects change color as their temperature changes,and red represents the lowest temperature.so the red star is the coolest.
4.Stars are black bodies,it absorbs all radiation that falls on it, but it also radiates back into space much more than it absorbs
5.So as far as the human eye can tell, there are no green stars,because the human eye-brain connection mixes the colors together
6. Our sun is a green star
7.Our sun is a dwarf star, in the long, mature stage of evolution
and much smaller than the giants and supergiants
8. Stars don’t twinkle,when they are near the horizon,the light from a star passes through the atmosphere,it must pass through many layers of often rapidly differing density
9. You can see 20 quadrillion miles, at least
10. Black holes don’t suck.matter is pulled into the black hole by a very strong gravitational attraction.
今天的内容好有意思的说,谢谢楼主分享,大家国庆节快乐呀!(*^__^*) |
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