Interstellar comet 3I/ATLAS — just the third such object ever confirmed to have entered our solar system — flew past Mars ...

The newborn planetary system appears to be emerging 1,300 light-years away around a baby star known as HOPS-315. Planet-forming materials were first identified using NASA's James Webb Space Telescope.

A new peer-reviewed study finds that early planet formations were assembled from fragments of earlier bodies within the Solar System.

A view of HOPS-315, a baby star some 1,400 light-years from Earth where astronomers have observed evidence for the earliest stages of planet formation. Combined with data from the James Webb Space ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its nebular gas had been consumed—Earth's solar system and its planets looked more ...

Astronomers have made a significant breakthrough in space exploration by discovering over 6,000 planets outside our solar ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

The Hubble Space Telescope has snapped some spooky looking photos of our solar system’s newest interstellar invader on the run. The object, dubbed 3I/ATLAS, was first spotted careening through the ...

Peering through a cosmic keyhole at distant baby star, astronomers may have opened a new window on the deep past of our own solar system. Weighing in at 0.6 solar mass, HOPS-315 should someday grow to ...

The main working hypothesis for the Mercury problem says that the planet is the victim of a collision with a different-sized object. The cataclysmic collision stripped much of the planet's mantle and ...

CAPE CANAVERAL, Fla. (AP) — The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another star. NASA and the European Space Agency released ...