Centuries before anyone pointed a telescope at the sky, Isaac Newton figured out how gravity works. He showed that any object ...

As the collapsed core of a massive star, a neutron star is a small but incredibly dense object, packing up to three times the ...

Two unusual gravitational-wave events, discovered by the LIGO-Virgo-KAGRA colloboration, enhance our understanding of black ...

In an inversion of the well known scenario of a black hole devouring a star, the researchers propose that a star actually ...

Stars often fall into black holes, and now it seems the opposite can also occur, producing an extra long-lasting explosion as ...

In a remarkable cosmic event, astronomers have detected a black hole-star merger that has resulted in the longest gamma-ray ...

On July 2, 2025, NASA's Fermi Gamma-ray Burst Monitor (Fermi-GBM) captured around three hours' worth of signals that appeared ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density – given that the universe contains a lot of relatively empty space, could ...

So much happened in the earliest moments of the universe. Elementary particles appeared, the first nuclei of hydrogen and ...

Data show that unidentified lights in archival astronomy images were 68% more likely to be imaged 24 hours after a nuclear ...

Astronomers recorded the longest gamma-ray burst in history, GRB 250702B, that may be a cosmic event completely new to ...