An astrophotographer has captured an extremely rare and "difficult" photo of a solar flare exploding from the sun at the ...

What we saw in the DESI experiments, and now strengthened by our South Pole Telescope observations, is that dark energy is ...

You could swim through the deepest voids and encounter a single hydrogen atom in an entire football field's worth of space.

The earliest light in the universe has been traveling across space since just after the Big Bang. Known as the cosmic ...

A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and the Planck satellite, offers a high-definition view of the early ...

Study reveals that high-energy cosmic rays are born in magnetic fields during neutron star mergers, a prelude to black holes.

On May 27, 2021, the Telescope Array experiment detected the second-highest extreme-energy cosmic ray. At 2.4 x 1020eV, the energy of this single subatomic particle is equivalent to dropping a ...

Scientists find highest energy cosmic ray electrons ever seen. Victoria Corless. Mon, November 25, ... They also had to be able to differentiate the electrons from background signals.

Other high-energy cosmic messengers zipping through space are not as reliable. ... They also can be produced by interactions between high-energy cosmic rays and the universe's background radiation.

However, although photons of light existed since the first second after the Big Bang, they could not yet shine across the ...