Astronomy has a way of defying labels. Just when researchers think they've drawn a clean line between two cosmic categories, nature tosses in something unexpected. Take stars and planets. A star is a ...

Planets, like those in our solar system, form in a bottom-up process where small bits of rock and ice clump together and grow larger over time. But the heftier the planet, the harder it is to explain ...

The life cycles of stars are fascinating, and sometimes the line between stars and planets isn’t as clear as it seems. Astronomers have found that under certain conditions, stars can fade, shrink, or ...

Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty protoplanetary disks that give birth to planets of all kinds. And when a star ...

29 Cygni b is a massive object weighing around 15 times as much as Jupiter and with 150 times the heavy elements of Earth. So, is it a planet or a star? Astronomers used the James Webb Space Telescope ...