A nearby star shines red against a backdrop of its distant cousins (Image: DSS/NASA/JPL-Caltech)
This pair of brown dwarfs represent the closest system to our star discovered in almost a century (Image: NASA/JPL/Gemini)
WISE imaged 750 million stars and galaxies over its lifetime, including this stunning picture of the Andromeda galaxy (Image: NASA/JPL-Caltech/UCLA)
Planet X is a hypothetical star or planet, theorized to be responsible for Earth's mass extinction events (Image: Shutterstock)
A study of data captured by NASA's Wide-Field Infrared Survey Explorer (WISE) satellite has disproved the existence of the hypothesized large celestial body, dubbed "Planet X." The planet or companion star was, some believed, responsible for the periodic mass extinctions that have taken place in Earth's past.
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