Dark matter seems invisible, but it makes up most matter, and we have evidence that it gives the cosmos its shape. Now ...

We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole new model to account for gravity’s influence.

The writers of Star Trek went above and beyond to make the universe as realistic as possible.

A tremendously large cloud that blocked the light from a distant star has been found to consist of swirling winds of ...

Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

Combining observations from several powerful telescopes, astronomers have detected a gargantuan, 'wobbling' black hole ...

To explain these observations, they proposed a new kind of energy that is responsible for driving the universe’s accelerated expansion: dark energy. Astrophysicists now believe dark energy makes up ...

A black hole 11.6 billion light-years away is breaking a speed limit for feeding, offering clues about the early universe's ...

Solar storms are eruptions that release some of the energy stored in the sun's strong magnetic field. These can create ...

For years, the James Webb Space Telescope has been spotting enormous black holes in the early universe that defy all ...

For forty years, the “Standard Model” assumed dark matter must be cold. If it moved too fast (which would have made it hot), ...

Cosmology and quantum physics both offer tantalizing possibilities that we inhabit just one reality among many. But testing ...