Harry Baker

New images reveal interstellar comet 3I/ATLAS beginning to grow a signature tail as it zooms closer to the sun ahead of a close encounter with Earth this fall.

New computer simulations suggest the first magnetic fields that emerged after the Big Bang were much weaker than expected — containing the equivalent magnetic energy of a human brain.

"Marsquake" data collected by NASA's InSight lander have revealed dozens of mysterious blobs within the Red Planet's mantle. The structures may have been left by powerful impacts up to 4.5 billion years ago.

Asteroid 2025 QV5, which was first spotted in late August, will make a close approach to Earth on Wednesday (Sept. 3). It will not get this near to us again until Sept. 4, 2125.

Space weather experts warn that a "strong" geomagnetic storm will rock Earth on Sept. 1-2, potentially lighting the skies with vibrant auroras across large parts of North America. The disturbance is being triggered by a rare, cannibalistic ejection from the sun.

New models suggest that Ceres, the asteroid belt's largest object, once had a radioactive core that could have sustained life in the dwarf planet's hidden subsurface ocean billions of years ago.

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered?

New data from the James Webb telescope suggests that Bennu and Ryugu — two asteroids recently visited by sample-return missions — are both fragments of a single massive "parent".

Chinese astronomers have spotted a hidden supermassive black hole in the background of a peculiar gravitational wave event from a black hole merger, hinting that all three singularities were locked in a never-before-seen triple system.

Researchers have combined 15 years' worth of radio data to peer through the cone of a high-energy jet and unravel the magnetic mysteries of a "blazar" billions of light-years from Earth. The new findings also shed light on the origin of elusive "ghost particles."

The ghostly light, which was triggered by a rocket reentry, sailed across the night sky as skywatchers across the U.S. looked up to see "shooting stars" streak across the heavens. However, experts are confused over which spacecraft is responsible.

The recent discovery of a potential gas giant circling the nearby star Alpha Centauri A has led to speculation that it may be orbited in turn by a habitable moon that could support life, just like in the "Avatar" movies.

A surprising new paper suggests that the universe's expected lifespan is just 33 billion years, and that the cosmos will start dying in less than a third of that time. However, this is only one possible theory.

Astronomers believe they have spotted an elusive intermediate-mass black hole shredding a distant star, and they have re-created the stellar murder in a stunning new animation.