A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and ...

Astronomers have long struggled with a troubling puzzle: a significant portion of normal matter in the universe appeared to ...

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

When we look at the night sky, the stars we can see are within our own galaxy ... a Big Bang. But the story doesn’t end there. Astronomers realised that to learn more about this background ...

Light from this new record-breaking galaxy, designated RUBIES-UDS-QG-z7, has been traveling to us for 13 billion years, meaning the JWST saw it as it was just 700 million years after the Big Bang ...

Their goal was to measure the Milky Way galaxy, home to planet ... that just 15 million years after the Big Bang, the temperature from the cosmic background microwave radiation was 0 to 30 degrees ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...

The JWST's image of the Big Wheel galaxy, a massive rotating disk 11.7 billion light-years away. Its spiral stretches 100,000 light-years, making it the largest confirmed galaxy of its time.