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

About 4. 6 billion years ago, the Solar System formed from a cloud of dust and gas collapsing in on itself due to gravity.

The Earth found itself inside a stream of solar wind emanating from a coronal hole in the Sun, much earlier than expected.

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

For millions of years, a fragment of ice and dust drifted between the stars—like a sealed bottle cast into the cosmic ocean.

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

ESA has inaugurated a powerful new 35-meter deep space antenna at its New Norcia site in Western Australia, marking a major ...

For millions of years, a fragment of ice and dust has drifted between the stars — a frozen message in a bottle from another ...

Anyone who studies planetary formation would relish the opportunity to get a close-up look at an interstellar object. Sending ...

The European Space Agency's two Mars orbiters take their shot at getting pictures of the exotic interstellar comet 3I/ATLAS.

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

Astronomers discover asteroid 2025 PN7, earth's latest quasi-satellite, revealing insights into planetary dynamics and ...