If another gravity theory is correct, "then the broader implications are enormous," astrophysicist Stacy McGaugh told ...

Using the James Webb Space Telescope, an international cooperation of NASA and the European and Canadian space agencies, a ...

The James Webb Space Telescope has discovered surprisingly large and bright early galaxies. This discovery challenges the ...

Since its launch, the James Webb Space Telescope has been finding unusually bright galaxies in the early cosmos. Now there is ...

Astronomers, using the James Webb Space Telescope, have discovered that early galaxies are far larger and brighter than ...

Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made ...

This low-mass supermassive black hole, spotted with NASA’s James Webb Space Telescope and the Chandra X-ray Observatory, ...

An international team of astronomers has identified three ultra-massive galaxies—each nearly as massive as the Milky ...

Webb captures merging galaxy pairs known as II ZW 96. It is located around 500 million light-years away from Earth. This ...

This illustration shows a red, early-universe dwarf galaxy that hosts a rapidly feeding black hole at its center. Using data ...

NASA’s Voyager 2 flyby of Uranus decades ago shaped scientists’ understanding of the planet but also introduced unexplained oddities. A recent data dive has offered answers. In 1986, Voyager 2's flyby ...

This Hubble Space Telescope image shows LEDA 42160, a galaxy about 52 million light-years from Earth. The dwarf galaxy is one ...