A flash of light lasting an attosecond, or 0.000000000000000001 of a second, is an extremely short pulse of light

Scientists are intrigued by the origins of a new burst that is occurring every 157 days in the Milky Way

In a few seconds, a gamma-ray burst emits as much energy as the Sun will radiate in its entire life

The world's largest particle collider still has much to teach us about the physical laws of the universe

The stars evolve to be hydrogen-poor supernovae, scientists say and were hiding in plain sight

Astronomers have long suspected electron-capture supernovae to exist; now it's finally been observed

The phenomenon may confirm a long standing theory

The micronova "challenges our understanding of how thermonuclear explosions in stars occur," one scientist said

A distant pulsar known as J1023 is ejecting huge amounts of matter at nearly the speed of light

The unique neutron star 4U 0142+61 has a solid surface and a giant ring of matter orbiting it

Meet XRISM, the telescope collaboration between JAXA and NASA that could reveal the universe's secrets

LIGO is back online. How the world’s most sensitive yardstick reveals the secrets of the universe

Betelgeuse is so dim that Orion has lost his shoulder. If the star explodes, it will be as bright as the full moon

Neutron stars are the densest objects in the universe, created from massive stars that have collapsed

Why some astronomers think a weird neutron star might actually be made of elusive strange quarks