With those enormous distances in mind, consider Cristina's question: How can light travel across the universe and not slowly lose energy? Actually, some light does lose energy. This happens when it ...

My telescope, set up for astrophotography in my light-polluted San Diego backyard, was pointed at a galaxy unfathomably far from Earth. My wife, Cristina, walked up just as the first space photo ...

Here is a thought experiment for you: imagine shining a powerful laser at the moon, the beam cutting through space until it lands on its dusty grey surface. Now flick the laser so the spot of light ...

Japan–US scientists combine T2K and NOvA data to measure neutrino mass gaps with record precision, offering clues to the ...

The universe rarely fails to amaze. One of its latest surprises—nicknamed the “Einstein zig-zag”—reveals a stunning arrangement of galaxies and a distant quasar. Together, they produce a gravitational ...

"This is a major step toward understanding how galaxies like our Milky Way came to be." Astronomers have turned the Atacama Large Millimeter/submillimeter Array (ALMA) into a time machine to peer back ...

Using NASA's Chandra X-ray Observatory and Karl G Jansky Very Large Array (VLA), astronomers have spotted a powerful jet from a black hole situated in the distant universe that is being illuminated by ...

Just 500 million years after the Big Bang, a colossal black hole, 300 million times the mass of the Sun, was already blazing at the heart of a tiny, brilliant galaxy. Found with JWST, this discovery ...

An anomaly in the temperature of the universe has long stumped physicists, and a new analysis of data from several radio telescopes has only deepened the mystery of what is causing it. This weird ...