Robert Lea

NASA's ISS-mounted X-ray telescope NICER has weighed and measured the closest pulsar to Earth. The neutron star PSR J0437 spins 174 times a second and has a mass of 1.4 suns.

Seven years ago, the Cassini mission ended when the spacecraft dramatically crashed into Saturn, but the data it collected is still delivering results, revealing the secrets of Titan's oceans.

Signs of life could survive on the icy surfaces of Saturn's and Jupiter's moons, Enceladus and Europa, despite harsh radiation bombardment from the sun and supernovas.

Even though the sun's current solar cycle hasn't reached its peak yet, scientists have seen signs that the next 11-year solar cycle is already getting ready for its time to shine.

The concept of dark energy came about just around the time Space.com booted up.

The universe would be filled with zombie galaxies and dead stars if not for supermassive black hole-powered 'hearts and lungs' that help slow star formation.

Scientists have seen a cannibalistic neutron star spraying S-shaped jets like a cosmic garden sprinkler as it feeds on a companion star.

Astronomers may have solved the mystery of how hot Jupiter exoplanets are born, finding a gas giant with a weird orbit in the process of transforming into just such a world.

"It's possible we’re swimming in a whole sea of these objects that are really faint and hard to see."

Over the last 25 years, black hole physics has experienced something of a revolution.

How can any telescope see a galaxy 33.8 billion light-years away in a universe that is only 13.8 billion years old?

The composition and great density of 'hot Saturn' exoplanet Smertrios are a challenge to planet formation models that the detection of water may help solve.

To celebrate the second anniversary of the James Webb Space Telescope's first images, NASA has revealed a cosmic Penguin and Egg.

A simulated universe created by a supercomputer should help astronomers better analyze dark matter and dark energy clues delivered by "dark universe detective" telescopes Roman and Rubin.

A "guest star," briefly seen in 1181, was created by colliding dead stars.

China aims to launch its first planetary defense mission by 2030, to showcase the skills needed to nudge a dangerous asteroid away from Earth.

The Hubble Telescope has discovered a black hole "frozen in time" that's also the closest massive black hole to Earth.

In 1986, the Voyager 2 spacecraft discovered Uranus has a strangely weak radiation belt. Now, researchers think this could be linked to "traffic jams" caused by the world's warped magnetic field.

Using the James Webb Space Telescope, astronomers have witnessed the dramatic dance between a supermassive black hole-powered quasar and merging galaxies less than a billion years after the Big Bang.

New research suggests that galaxies with quasars at their active hearts are seven times more likely to harbor elusive supermassive black hole binary paintings than other galaxies.

As if deadly rains of glass, temperatures hot enough to melt lead, and sidewise 5,000 mph winds weren't unfriendly enough, the JWST has found a Jupiter-sized exoplanet also stinks of rotten eggs.

The expansion of the universe may not be accelerating at the edges of black holes. If this is the case at all event horizons, this may explain "Hubble tension," and the worst prediction in physics.

A Navy research team intern is part of a group of astronomers who have discovered a rapidly spinning neutron star, or "pulsar," in a dense cluster of stars around 10 light-years away.

Scientists will cool two pieces of quantum tech to a thousandth of a degree above absolute zero to hunt for two different dark matter suspects.