On Christmas Day 2021, alongside other astronomers, I watched the James Webb Space Telescope (JWST) launch from French Guiana and begin its month-long journey to its destination, 1.5 million ...

There’s a new contender for the universe’s earliest first-generation stars. A bright clump seen about 450 million years after the Big Bang has the chemical hallmarks of first-generation stars — ...

"We really needed the sensitivity of JWST. We also needed the 100 times magnification from gravitational lensing from a galaxy cluster between us and LAP1-B." When you purchase through links on our ...

For decades, astronomers were only able to study the universe's very first stars using theoretical models. Now, observations from the James Webb Space Telescope (JWST) have revealed what may be the ...

A newly discovered star suggests tiny relic galaxies like Pictor II preserved the chemical material created by the universe's first star explosions and later helped build larger galaxies like the ...

Astronomers have caught a massive star exploding just moments after the universe emerged from the cosmic dark ages, shedding light on how the first stars were born and how they die. When stars run out ...