This is the story of our cosmic neighborhood's front row. We explore the four rocky planets forged in the sun's heat: ...

A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...

Scientists have found that time passes slightly faster on Mars than on Earth, a difference caused by gravity and orbital ...

Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.

The world's largest planetary defense drill is underway as scientists prepare for 3I/ATLAs to make its closest pass by Earth ...

Interstellar comet 3I/ATLAS makes its closest Earth approach on Dec. 19, offering astronomers a rare chance to study a visitor from beyond the solar system ...

Although they are technically gas giants, Uranus and Neptune are referred to as "ice giants" due to their composition.

The world's most expensive infrared spectrometer - the James Webb Space Telescope - is unearthing extraordinary exoplanet ...

Mars clocks tick 477 microseconds faster per Earth day, complicating future missions and interplanetary timekeeping.

When NASA scientists opened the sample return canister from the OSIRIS-REx asteroid sample mission in late 2023, they found ...

While the 21st century has been bumpy, it has also ushered in monumental scientific and technological breakthroughs that have ...