For lovers of astronomy Saturn’s “disappearing rings” on Sunday will be a rare and fascinating event but for believers in ...

What would happen if Jupiter’s moons scattered? Explore the orbital chaos and potential collisions caused by displaced moons.

Cutting-edge simulations show that Enceladus’ plumes are losing 20–40% less mass than earlier estimates suggested. The new ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Io, moon of Jespiter Jupiter, is famously volcanically active. It has more than 400 active volcanoes, over an area the size of Asia. Some of the volcanic mountains are taller than Mount Everest.

Mercury, the planet of communication and thought, began its retrograde in Sagittarius on November 9, spotlighting truth, ...

Astronomers are catching new glimpses of the strange interstellar visitor 3I/ATLAS as it re-emerges into the predawn sky ...

Many historians think that Nov. 1, known for the festival of Samhain, was the ancient Celtic New Year’s Day. Samhain, Old Irish for “summer’s end,” was a harvest festival that may have contributed to ...

The discovery of a new celestial object in the Earth's neighborhood has created a buzz online asking whether the planet now has a second moon in its orbit. Any thoughts that Earth is now going to be ...

An artistic rendering of a dust and gas disk encircling the young exoplanet, CT Cha b, 625 light-years from Earth. Full image, annotation, and caption shown below. Credit: NASA, ESA, CSA, STScI, ...