A new theory explains how dozens of mysterious planet pairs discovered by the James Webb Space Telescope, dubbed "JuMBOs," ...

The availability of the James Webb Space Telescope is finally giving astronomers the tools they need to measure this aspect ...

The rate of expansion of the universe today is a figure known as the Hubble constant, which is typically measured in units of ...

New observations from the James Webb Space Telescope suggest that a new feature in the universe -- not a flaw in telescope measurements -- may be behind the decade-long mystery of why the universe is ...

The James Webb Space Telescope has confirmed the universe's expansion rate, suggesting unknown cosmic factors drive its ...

This month marks three years since the James Webb Space Telescope was first launched, which still feels something like a ...

There is something missing in our understanding of the Universe to explain its expansion, known as dark energy, that began after the Big Bang, according to a new study using James Webb Space Telescope ...

NASA astronaut Don Pettit imaged the Large and Small Magellanic Clouds as the International Space Station cruised 260 miles ...

James Webb's latest capture of the Sombrero galaxy reveals intricate details of its dust distribution and minimal star ...

This week, uncover the challenges faced by Voyager 1, meet flower-licking wolves, see an unexpected ancient lifesaving tool, ...

NASA released its "Astronomy Picture of the Day"—actually a combo of two pictures, taken two decades apart. The first is a 20 ...

Webb’s Powerful Mid-Infrared Instrument Resolves Clumpy Nature of Dusty Disk Astronomers are known for their precision, but ...