News

Physics

The world’s fastest microscope makes its debut

Using a laser and an electron beam, the microscope can snap images of moving electrons every 625 quintillionths of a second.

Space

The historic ‘Wow!’ signal may finally have a source. Sorry, it’s not aliens

One of the best possible signs of extraterrestrial communication may have an astrophysical explanation — albeit a weird one.

Astronomy

The nearest midsized black hole might instead be a horde of lightweights

Astronomers recently reported that the Milky Way star cluster Omega Centauri hosts an elusive type of black hole. A new study says it does not.

Animals

This spider makes its home in the burrows of extinct giant ground sloths

Caves made by extinct giant ground sloths make the perfect home for a newly discovered type of long-spinneret ground spider from Brazil.