Europa was first discovered in 1610 by Florentine astronomer, physicist, and engineer Galileo Galilei. Using a homemade ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

Venus and our closest neighbor Mercury (here's how that works) are lonely. While Jupiter hogs up at least 95 moons, neither of the innermost planets have a single moon to keep them company in their ...

Scientists say microscopic black holes could explain the elusive "dark matter" that makes up a quarter of all matter in the ...

Venus, Jupiter, Saturn, Neptune and Pluto all have quasi-moons which ... The dwarf planet, Ceres, is seen in the main ...

Our ancestors noticed that among the “fixed stars”, which remained in unchanging patterns, there were five “wandering stars”, ...

Venus lingers after sunset. Saturn reaches opposition Sept. 8 and Neptune reaches opposition on the 20th. Jupiter dominates ... Titan shines at magnitude 8.4 and orbits in 16 days.

A number of asteroids have orbits that take them closer into ... meaning "wanderers." Mercury, Venus, Mars, Jupiter and Saturn were known in antiquity, and the invention of the telescope added ...

For about 4.5 billion years, our planet has circled the sun on a stable, rhythmic path. Each of Earth's orbits takes ...

2024 PT5 will be a temporary visitor, arriving in September and flying off again in November.

The full moon lunar eclipse in Pisces takes place on September 17 at 10:35 p.m. EDT. Events surrounding this eclipse will ...