A dead star the size of the Moon is the smallest of its kind we’ve ever seen. It’s a white dwarf star, the ultradense collapsed core...
Methane is an organic molecule that hangs around in Earth’s atmosphere and is mostly produced by living organisms, most notoriously by farting cows. Its detection on...
The highly infectious Delta coronavirus variant that’s spread to more than 96 countries may now be dominant in the US, according to a private testing firm partnered with the Centers...
The most complex life forms ever developed entirely in Petri dishes can pump blood through tiny beating hearts, gradually growing nerves and muscles in a laboratory....
A very rare mineral that’s previously been found only in extraterrestrial meteorites has been discovered in Earth’s own rocks for the first time, lying in a...
Why does long COVID last for so long, leaving long-haulers with symptoms that persist for months after initial infection? New evidence suggests the enduring imprint of...
Scorpions and tarantulas are two ancient arachnids that have been walking the Earth for hundreds of millions of years – even before the time of the...
The human body contains hundreds of different types of cells, with stem cells working like blank canvases that can be adapted and reproduced to help our...
A wooden stick carved into the shape of a snake dating back about 4,400 years has been discovered by a lake in southwest Finland. The stick...
Way back in 1054 CE, a supernova stellar explosion lit up the skies with enough brightness that it could be seen from from Earth during the...