On March 2, 1979, a paper in Science ruminated on Io’s strange orbit. Because of the positions and orbits of neighboring moons, Io’s orbit is elliptical rather than circular.

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

Io, one of the most fascinating moons in our solar system, continues to mystify scientists with its intense volcanic activity and bizarre behavior. This moon, known for its towering volcanoes ...

NASA have found something new moving in our Solar System. Even thought it's not water, still a phenomenon worth of time ...

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.

kilometers (124 miles) of Io in February, and transmitted them to Earth during the following eight months. To approach Io, the spacecraft had to enter a region of hazardous radiation around Jupiter.

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 ...

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 — ...