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Neil Armstrong sits in the lunar module after a historic moonwalk.
A brief biography of the naval aviator, test pilot, astronaut.
Europa: Highest Resolution Global Color View
Europa is an icy moon of Jupiter and one of the four so-called...
The moon can appear somewhat blue if there's been a major volcanic eruption that put tons of particles in the air, but otherwise blue moons refer to multiple full moons in certain time frames
A blue moon is not typically blue, but it can be.
black hole particles escaping
A basic primer on one of nature's weirdest creations.
50-Year Mystery of Strange Pulsating Stars Solved
Variable stars change brightness. But there are many reasons why.
This image was taken during the 1999 Leonid meteor storm as part of NASA's Leonid Multi-Instrument Aircraft Campaign (Leonid MAC). The image was captured with a 28 mm camera.
Watching a meteor shower on a clear, dark night is an unforget...