A mysterious space object named 2023 KQ14, nicknamed “Ammonite,” challenges theories about the mysterious and possible Planet ...

Space scientists look back on three decades of exoplanet discoveries—from rows of massive ‘super-Earths‘ to worlds with ...

Neptune, a gas giant with a bluish tint, roams the outer reaches of our Solar System, about 4.5 billion kilometers from the Sun. In its orbit, one mystery stands out, capturing the attention of ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...

These Martian dunes in Mars' northern hemisphere were captured from above by NASA's Mars Reconnaissance Orbiter using its ...

Caltech researchers have developed a new simulation of the hydrological cycle on Jupiter, modeling how water vapor condenses ...

Chrysalis, a 36-mile rotating space habitat, plans to take 2,400 people to Alpha Centauri in approximately 400 years.

For decades, Saturn’s upper atmosphere has been one of the solar system’s great enigmas. Even the Cassini spacecraft, which ...

Astronomers have been fascinated after spotting an object earlier this year that came from interstellar space as is now hurtling through our inner solar system. Regardless, it’s an interesting visitor ...

The official number of planets outside our solar system has reached 6,000, according to space scientists. NASA's tally of exoplanets does not include more than 8,000 additional candidate planets ...

Though the rings appear solid from afar, they’re actually a dynamic, rotating system of icy debris. One theory suggests they may be remnants of a moon or comet torn apart by Saturn's immense gravity.