The universe is commonly defined as the totality of everything that exists,including all matter and energy, the planets, stars, galaxies, and the contents of intergalactic space.
Definitions and usage vary and similar terms include the cosmos, the world and nature. Scientific observation of earlier stages in the development of the universe, which can be seen at great distances, suggests that the universe has been governed by the same physical laws and constants throughout most of its extent and history. There are various multiverse theories, in which physicists have suggested that our universe might be one among many universes that likewise exist.

Pictures from Apollo 11

Apollo 11 was the spaceflight that landed the first two humans, who were Americans, on the Moon. Mission commander Neil Armstrong and pilot Buzz Aldrin landed the lunar module Eagle on July 20, 1969, at 20:18 UTC. Armstrong became the first to step onto the lunar...
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Nebulas 1

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The Moon

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Galaxies 1

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Earth From Space

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The Most Astounding Fact about the Universe

Astrophysicist Dr. Neil DeGrasse Tyson was asked in an interview with TIME magazine, "What is the most astounding fact you can share with us about the Universe?" This is his answer. Neil goes on to say "For me, that is the most profound revelation of 20th century...
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