New research suggests that we may be vastly underestimating the number of black holes that existed in the early universe, ...

The Great Red Spot is a gargantuan, high-pressure vortex called an anticyclonic storm that has been raging in Jupiter's ...

Hubble has homed in on a nearby star called R Aquarii, which is throwing out material for billions of miles around it.

The NASA/ESA Hubble Space Telescope has provided a dramatic and colorful close-up look at one of the most rambunctious stars ...

Using the Gaia space telescope, astronomers have observed 55 massive stars ejected from their home star cluster in the Large ...

The Webb telescope — a scientific collaboration between NASA, ESA, and the Canadian Space Agency — is designed to peer into ...

Estimates of how fast the universe is expanding disagree. Could a new form of dark energy resolve the problem?

Advancements in commercial satellite capabilities will enable NASA officials to transition to commercial systems to support ...

The @nasawebb Instagram account has also captured the imagination of Michael Hoppen, a photography specialist who opened his ...

Astronomers have yet to confirm the existence of exomoons, but a molecular signal around a far away star offers some of the ...

The Hubble Space Telescope has seen Jupiter's Great Red Spot oscillating in width as it drifts around the planet. Could this ...

Coverage of the launch is expected to begin at 11 a.m. ET and will be added to this story in the video player above. The ...