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 ...

Precise Readings From a South Pole Telescope Can Change Everything Humans Know About Cosmos Better insights on the mysterious ...

Could the Universe have been born inside a black hole? This question, raised by a team of scientists, challenges the Big Bang ...

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

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.

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

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.