Earth has been hit by an intense, unusual blast of light that could change our understanding of the universe, scientists have said.

Late last year, scientists spotted a 50-second-long blast of energy coming towards Earth, known as a gamma-ray burst or GRB, which are the most powerful explosions in the universe. Immediately, researchers started looking for the afterglow that such blasts leave behind, with that visible light being useful to find where the blast has come from.

But those researchers instead found something else entirely: that the blast appeared to have come from a kilonova. Those rare events only happen when a neutron star merges with another very compact object – either another neutron star or a black hole.

See Also:

Couple camping in California wilderness find lost man who survived for weeks on half Jar of salsa

The study challenges our understanding of where such long-lasting GRBs come from. But it could also provide an exciting way to answer other questions about the universe, such as where its heaviest elements come from, which still remains a mystery.

Read more: Independent