The Thirty Meter Telescope would be built on a culturally-significant summit.
It's the first observation of a Jupiter-like planet actively forming a moon.
The signal left home 4 billion years ago.
But astronomers have a good guess.
The Harvard professor who says 'Oumuamua might have been an alien ship says something like it hit Earth a few years ago.
A "planet-sized" telescope is about to release first-of-their-kind images.
If Earth ever seems bad, remember this poor planet!
6478 Gault is spinning itself into pieces.
Don't worry, these monsters are too far away to hurt us.
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