Astronomers are tracking a visitor called 3I/ATLAS, the third confirmed interstellar object ever observed. The two previous instances were 1I/’Oumuamua in 2017 and 2I/Borisov in 2019. 3I/ATLAS is ...

The James Webb Space Telescope is uncovering galaxies that formed just hundreds of millions of years after the Big Bang, some more than 13 billion light-years away. By capturing faint infrared light ...

Astronomers used James Webb Space Telescope data to determine the density of the universe's most mysterious "stuff." ...

Interstellar comet 3I/ATLAS has triggered fevered speculation after the James Webb Space Telescope detected an "out of order" burst of methane in its coma, puzzling even seasoned astronomers. While a ...

Light is the fastest phenomenon in the universe, clocking in at just under 300,000 kilometers per second. The telescopes that observe that light, from radio waves to gamma rays, are built at rather ...

Dating to only a billion years after the big bang, JADES-ID1 may be the earliest, most distant galaxy protocluster astronomers have ever seen ...

Astronomers have spotted an unexpected and dramatic event in the early universe: a tightly packed collision involving at ...

The findings, detailed in papers posted on arXiv, mark a rare scientific achievement for an object that formed around a star ...

The first science image from the James Webb Space Telescope is the deepest and highest-resolution infrared image of the ...

Only far smaller impacts have been observed directly. In 2013, a meteoroid weighing a few hundred kilograms struck the Moon, ...

In one of the most baffling discoveries of the last decade, scientists have found a clue in a cave to how life might survive ...

A ‘GHOSTLY’ image captured by Nasa shows a stunning view of a “stellar nursery” where stars are born. The haunting pic ...