All Questions
4 questions
10
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1
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637
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Will the nebula of Betelgeuse be visible to the naked eye? How bright, how large, how soon, for how long?
When Betelgeuse goes core collapse supernova it will leave a supernova remnant. Will it become visible to the naked eye? If so, in what time frame will it be visible. Will it be star like from the ...
6
votes
1
answer
275
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Assuming no light pollution, was "2C. 1406" ever visible to the naked eye?
Joseph Needham, in his Science and Civilisation in China Vol. III, claimed that there was an ancient record of a nova about three thousand years ago. As a result of private correspondences with a "Dr ...
1
vote
1
answer
160
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Why isn't our local interstellar space colorised?
Looking at answers to this question, people seem pretty convinced that human naked eye should be able to see the colour of ionised gas/dust cloud when they are inside an emission nebula.
And we know ...
31
votes
2
answers
38k
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How many stars and galaxies can be seen by the naked eye?
How many of the luminous dots that we see naked are galaxies and not stars from our galaxy?
I imagine that the majority of the luminous points that we see naked eye during the night, are actually ...