The first telescope was the Copernicus, sent out in 1972
If you dig in your backyard, don't worry about running into the earth's core. You'd have to dig a hole 4,000 miles deep
The tarantula nebula (NGC 2070) is Located in the eastern portion of the Large Magellanic Cloud. It is the only extra-galactic Nebula that is visible to the naked-eye. If NGC 2070 were as close as the Orion Nebula (M42), it would take up the entire constellation of Orion and be bright enough to cast shadow.
One of Jupiter's moon is believed to grow and shrink because of the water beneath its frozen surface.
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