Sierra Space finished its fourth (of four) deliberate module explosions in February on the road to certifying the inflatable habitat for an International Space Station (ISS) successor, the ...

Sierra Space successfully finished its third module test for the Blue Origin-led Orbital Reef private space complex for NASA, on the long road to replace the International Space Station.

Astronomers are wowed by what they describe as the largest cosmic explosion ever seen. The event is more than 10 times brighter than a supernova and 100 times the size of our solar system.

Triggered by violent collisions between massive objects, kilonovas shine with 1% to 10% of the brightness of a typical supernova explosion, according to the European Space Agency.

The explosion dwarfs a gamma-ray burst GRB 221009A spotted by astronomers in 2022. By Ariana Garcia , Assistant News Editor May 18, 2023 An artist impression of a black hole accretion.

Multiple telescopes observed a rare cosmic explosion called a kilonova that created heavy elements in space, including some necessary for life.

The explosion is as bright as a quasar—an active galactic nucleus with a supermassive black hole at its core, which appears very bright in the sky. But unlike a quasar, AT2021lwx only recently ...

The "star" is an explosion, also known as a nova event, that happens around once every 80 years. It will be so bright that it can be seen with the naked eye, said NASA .