When we go backwards in time through the history of the cosmos, the distances and volumes shrink, while the average energy ...

The Big Bang theory suggests that the universe began as a hot, dense point, expanding into the cosmos we observe today.

The James Webb telescope has spotted three gigantic "red monster" galaxies that were spawned soon after the Big Bang. They're ...

When the two neutron stars collide, the initial kilonova of exploded neutron star guts is extremely hot, billions of degrees, ...

The kilonova briefly mimicked the conditions immediately following the Big Bang, and allowed scientists to confirm the source ...

The temperature of elementary particles has been observed in the radioactive glow following the collision of two neutron ...

"This is very likely to bring us closer to discovering the true nature of dark energy. Perhaps it will also bring us closer ...

Astronomers have used a range of telescopes, including Hubble, to watch as particles dance around a neutron star collision ...

Astronomers have identified three ultra-massive galaxies -- nearly as massive as the Milky Way -- already in place within the first billion years after the Big Bang. This surprising discovery was made ...

Time For Reflection Our understanding of the universe, as advanced as it is, is still riddled with paradoxes and huge ...

The temperature of elementary particles has been observed in the radioactive glow following the collision of two neutron stars and the birth of a black hole. This has, for the first time, made it ...