Science

More than 30 years after the Space Shuttle Challenger exploded on its way to space, Christa McAuliffe’s lesson plans are finally going to finish the trip. When the Challenger exploded 73 seconds after its Jan. 28, 1986 launch, McAuliffe perished along with the six other astronauts aboard. The 37-year-old social…

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The government shutdown isn’t just affecting federal agencies, such as NASA. It’s altering the plans of private sector spaceflight companies, such as SpaceX, too. SpaceX, the Elon Musk-founded company, was initially planning to launch the maiden flight of its huge new Falcon Heavy rocket at the end of January. However,…

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Snow on the Sahara.Image: Geoff Robinson Photography/REX/Shutterstock By Johnny Lieu2018-01-10 04:35:07 UTC Africa’s Sahara Desert isn’t the place you’d expect to see snow. Yet a rare winter storm powdered the arid sand dunes of northwestern Algeria with white snow on Sunday, the third time an event like this has happened…

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Earth’s infamous ozone hole won’t fully recover for another half-century, but NASA has its best evidence yet that this massive environmental scar is slowly healing itself. In the early 1980s, scientists discovered that hair sprays, refrigerants, and other chemicals were releasing an ozone-depleting chemical into the air called chlorofluorocarbons, or…

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