New research suggests that a massive, unidentified object might have passed through our Solar System billions of years ago, ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

A close encounter with a mysterious interstellar object could explain the current orbits of several of Earth’s largest ...

University of Arizona researchers have unveiled evidence of romance at the farthest reaches of the solar system: a cosmic ...

Recent simulations link the creation of Pluto and its moon Charon to a colossal impact, akin to the Earth-Moon origin, ...

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the ...

According to the most widely held astronomical model (the nebular hypothesis), new stars are born from massive clouds of dust ...

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida ...

A researcher has used advanced models that indicate that the formation of Pluto and Charon may parallel that of the Earth-Moon system. Both systems include a moon that is a large fraction of the size ...

The solar system may hold a hidden surprise. Astronomers are investigating the possibility of a mysterious ninth planet, often referred to as Planet Nine. If found, this discovery could change the ...

2025 will be off to a dazzling start. While 2024 may have set the astrotourism bar high, 2025 has a host of night-sky marvels in store, too — including many that are set to grace our skies this ...