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Astronomers have, for the first time, spotted a planet that is considered to be in the "Goldilocks zone," meaning that its environment is just right to sustain life: not too hot, not too cold. Scientists approximate that...
This site describes soft gamma repeaters. The author, Robert C. Duncan of the University of Texas at Austin, explains how these strange, physically-extreme stars form, and why they emit steadily pulsating X-rays with...
The Hubble Space Telescope was launched into low Earth orbit on April 25, 1990, supported by NASA funding that began in the 1970s. While the initial phase of the mission encountered problems (the main mirror was...
This NASA Image of the Day is the first image of the Earth and moon in a single photograph. The image was captured 7.25 million miles from Earth by Voyager 1 in 1977. More information about the photograph and a link to...
This image gallery showcases more than 100 meteorwrongs (objects misidentified as meteorites). There are explanations of why the rocks probably are not meteorites and suggestions of what they most likely are and why. The...
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