Articles by

Sid Perkins

Astronomers identified a second possible exomoon

Some of the same researchers who found the first purported exomoon now say that they’ve found another....

‘Penis worms’ may have been the original hermits

Hermit crabs have been taking shelter in abandoned shells for millions of years, but scientists now have...

Radiometric dating puts pieces of the past in context. Here’s how

When a researcher picks up an object — whether it’s a scrap of leather from a dig...

Fossil tracks may reveal an ancient elephant nursery

Fossilized footprints found on a beach in southern Spain betray what may have been a nursery for...

Jupiter’s intense auroras superheat its upper atmosphere

Jupiter’s upper atmosphere is hundreds of degrees warmer than expected. After a decades-long search, scientists may have...

Marsquakes reveal the Red Planet boasts a liquid core half its diameter

Mars has had its first CT scan, thanks to analyses of seismic waves picked up by NASA’s...

Newly recognized tricks help elephants suck up huge amounts of water

Whether or not it’s possible to teach an old elephant new tricks, a 34-year-old pachyderm at Zoo...

T. rex’s incredible biting force came from its stiff lower jaw

The fearsome Tyrannosaurus rex could generate tremendous bone-crushing bite forces thanks to a stiff lower jaw. That...