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

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 ...

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

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

Hardegree-Ullman said that while she was completing her undergraduate degree at the University of Arizona in the early 2000s, a member of the institution shared with her that they were involved with ...

A group of astronomers analyzing data from the James Webb Space Telescope (JWST) say some of the oldest galaxies in our ...

The James Webb Space Telescope has captured imagery of spiral galaxy NGC 7469, which is 90,000 light-years in diameter. The ...

Since its deployment, the James Webb Space Telescope has been fine-tuned by experts to maintain its powerful optical ...

NASA's James Webb Space Telescope is the largest and most powerful telescope ever launched to space. Its mirror is composed of 18 individual segments that have been aligned so accurately, that they ...

Black holes are fascinating objects. They're unimaginably dense: If Earth was (hypothetically) crushed into a black hole, it ...