Since the earth and the moon have a spherical shape, the part that receives the sunlight is reflected by the light, and the part that does not receive the sunlight is darkened.
Venus and the moon may look like charming companions on Sunday night, but Venus, which is 88 million miles away from Earth, will be 380 times farther from us.
The LSST will have a field of view of 3.5 degrees, which is considerably wider than those of other telescopes of a similar class(the sun and the moon have a diameter of 0.5 degrees when observed from the earth).
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