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

At last count, Jupiter has 95 moons, but the four main ones — Ganymede, Callisto, Io and Europa — were discovered in 1610 by famed Italian astronomer Galileo Galilei.

The Space Act, which would apply to local and foreign companies, aims to simplify procedures, protect assets in orbit, level ...

Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the ...

The researchers noted that Jupiter's moon Io, the most volcanically active body in the solar system, experiences tidal forces ...

Jupiter isn’t alone in this category; Saturn, Uranus, and Neptune are also gas giants, though Uranus and Neptune are often ...

This gas giant has some really unique features that make it stand out. If you’re curious about space, learning a few things ...

I’ve spent much of my long life studying — and trying to understand — the history of the universe. Along the way, I have been constantly reminded that science is essentially international: Science ...

Exoplanet HIP 67522 b, fluffed up to the size of Jupiter, circles so close to its star that it’s triggering violent flares — ...

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...

NASA has discovered the third known interstellar object to pass through our solar system, but the icy snowball object poses ...