Northern lights may be visible from these states Tue.
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Dark matter is special in that it doesn't emit, absorb or interact with light, so science had to find a more creative way to see it.
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This bright star will soon die in a nuclear explosion — and could be visible in Earth's daytime skies
The bright binary star system V Sagittae will flare up multiple times before finally going supernova within the next 100 years. When it explodes, it could be visible to the naked eye even in sunlit skies.
The northern lights could be visible in more than a dozen states thanks to a burst of plasma and energy from the sun.