Astronomers say they have produced one of the most precise measurements of the Hubble constant. Yet plenty of questions ...

The Artemis 2 crew carried miniature tissue chips that were created using their own stem cells. This study, called AVATAR, ...

Interstellar comet 3I/ATLAS showed changes in its gas composition after passing close to the sun, offering data on its ...

April’s new moon brings dark skies, making it easier to see Venus, Jupiter, Mars and key constellations along with distant ...

In 2014, a strange cloudy object called G2 made a close approach to Sagittarius A*, (Sag A*) the supermassive black hole at ...

Scientists have captured stunning new insights into one of the universe’s most powerful phenomena—black hole jets—by using a planet-sized network of radio telescopes. Focusing on Cygnus X-1, one of ...

The chance to see four planets in the sky at the same time, and so close together, isn't terribly common. Gyuk says that ...

Max Planck Institute for Extraterrestrial Physics scientists have been able to disentangle the X-ray glow originating in our ...

Scientists rely on two methods to measure the expansion of the universe: extrapolating from Cosmic Microwave Background (CMB) ...

Next week, the NASA Goddard Space Flight Center will be unveiling its newest space telescope: the Nancy Grace Roman Space ...

The Dark Energy Spectroscopic Instrument (DESI) has completed its originally planned five-year mission and mapped more than ...

Two University of Arizona faculty members have been awarded prestigious 2026 Guggenheim Fellowships: Award-winning playwright ...