Latest Science headlines

NASA bumps astronaut off space station flight in rare move

NASA has bumped an astronaut off an upcoming spaceflight, a rare move for the space agency so close to launch.

US cold snap was a freak of nature, quick analysis finds

Consider this cold comfort: A quick study of the brutal American cold snap found that the Arctic blast really wasn’t global warming but a freak of nature.

SpaceX says rocket performance OK in secret satellite launch

The private company defended its performance after last weekend’s launch.

US hits record for costly weather disasters: $306 billion

With three strong hurricanes, wildfires, hail, flooding, tornadoes and drought, the nation tallied a record high bill.

Disasters pummeled North America in 2017

Parts of the United States were hit by fire, floods, and hurricanes. Two earthquakes hit Mexico. The Caribbean had a string of hurricanes.

Bruce McCandless, 80, first person to fly untethered in space

Mr. McCandless’s journey into the dark void above Earth was preserved in an iconic photograph.

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A live stream of Instagram posts from The Boston Globe photo department.