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Home Q & A Board Science-Related Homework Help Physics
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bulldog bulldog
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11 years ago
I was watching a segment on the science channel about a Chinese astronomer who was able to see a supernova explosion at night time. I want to see something like that at night time. =(
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#1
11 years ago
A supernova is visible only when it's close-by in cosmological terms, which means in or near our galaxy.  The last one visible without a telescope was in 1987, but in the southern hemisphere.  In our galaxy, supernovas happen about every 400 years, so don't hold your breath.
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#2
11 years ago
Supernova 1987a was visible to the naked eye. (From the southern hemisphere).

Happens maybe twice a century.  Once every 500 years, for one visible in the daytime.
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#3
11 years ago
Visible supernova within our galaxy are, on average, roughly 1 or 2 per century, however, the last of these spotted was several hundred years ago, some would say we are overdue, others would say we don't have enough historical data to establish an accurate 'mean' occurrence rate.   SN 1987a was the last naked eye supernova, although it was not in our galaxy, but one of the Magellanic clouds.
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