A long-simmering disagreement over the universe’s present-day expansion rate shows no signs of resolution, leaving experts ...

Just about everyone has heard of NASA’s Hubble Space Telescope — not too surprising considering that it has been with us for ...

(CNN) – NASA’s Hubble Space Telescope is revealing new insights about the planet Uranus. An unprecedented 20-year-old study ...

Meteor showers return to the skies over Castro Valley in April providing hours of nighttime enjoyment as spring temperatures ...

This image of the Helix Nebula, released on March 4, 2025, shows a potentially destructive white dwarf at the nebula's center ...

A NASA space telescope on a mission to map millions of galaxies has turned on its detectors for the first time, capturing ...

NASA's SPHEREx observatory has started capturing its initial images, paving the way for a comprehensive study of millions of ...

SPHEREx is somewhat similar to the Webb telescope as it also observes the universe in infrared light, which is invisible to the eye but can be felt as heat. With its six detectors, it can break down ...

A stunning new image from the James Webb Space Telescope reveals a cosmic mirage known as an Einstein ring, where the light ...

In about 5 billion years, our Sun will run out of fuel and expand, possibly engulfing Earth. These end stages of a star's life can be utterly ...