When two neutron stars spiral into one another and merge to form a black hole—an event recorded in 2017 by gravitational wave detectors and telescopes worldwide—does it immediately become a black hole? Or does it take ...
Astronomy
Mar 5, 2022
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222
A crescendo of deadly extreme weather is outpacing preparations for a climate-addled world, according to a landmark UN assessment of climate impacts released this week.
Environment
Mar 5, 2022
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151
The twin galaxies NGC 4496A and NGC 4496B dominate the frame in this image from the NASA/ESA Hubble Space Telescope. Both galaxies lie in the constellation Virgo, but despite appearing side-by-side in this image they are ...
Astronomy
Mar 5, 2022
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142
