There have been times, even in my life time, when things like this were visible in the sky every night to the naked eye. Have you ever seen a supernova through a telescope? -M
Astronomers are calling a supernova first sighted just two days ago an “Instant Cosmic Classic.” Not only is the supernova brighter and closer to Earth (around 21 million light-years) than any we’ve observed in a generation, scientists actually managed to catch the supernova within hours of its explosion, making it the youngest supernova we’ve ever detected.
via Astronomers have spotted “the supernova of a generation,” and it’s exploding right now.
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Challenge:
A supernova has not been observed in our galaxy since 1604 but scientists thing they happen quite frequently. How frequently and how do they know?
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