Mercury and Saturn are neighbors in the sky, about a half a fist held upright and at arm’s length above the west-southwestern ...

The Einstein Probe was launched in January 2024 to study the high-energy universe, and among its instruments is its ...

"The diversity of ways that white dwarf stars can blow up is much greater than previously expected." There are a lot of ways ...

An amateur astronomer discovered Pluto 95 years ago today. The former planet will complete an orbit in another 153 years.

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...