Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

With construction complete, the telescope will now move into final testing. Following testing, Roman will be packaged and ...

The Hubble Space Telescope has imaged a "200,000 light-year-long trail of newborn stars" that may have been left behind by a ...

The 14th day of the 18th annual Space Telescope Advent Calendar features undulating dust lanes at the edges of a distant ...

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

James Webb Space Telescope confirms the first runaway supermassive black hole in the Cosmic Owl galaxy, observing its tail and bow shock, providing direct evidence of black hole ejection during galaxy ...

An interstellar comet racing through the inner solar system is giving scientists a rare chemical snapshot of material formed around another star, with early findings showing an unexpectedly low water ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

New gravitational lensing measurements by the TDCOSMO Collaboration support the Hubble Tension, confirming differences between Early and Late Universe Hubble Constant values using updated ...

The Calabash Nebula, pictured here — which has the technical name OH 231.8+04.2 — is a spectacular example of the death of a ...

For the first time, astronomers have captured the brilliance of a superluminous supernova via gravitational lensing.

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...