The light emitted by a light source, like any other opaque object, casts shadows from the moon and earth into space. Each shadow has 3 different regions: amber, penumbra, and antumbra.Umbrella / amber is the dark core of the shadow....
24 october 1946. A time when no one saw what the earth would look like from space. The following is the first image of Earth from space, taken 65 miles above, with a movie camera fitted to a modified v2...
On January 3, the closest Leonard comet to the Sun will begin its journey out of the Solar System forever. Until January 10, the comet will be visible through binoculars or telescopes after sunset near the southern Pisces constellation in...
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