Catch two transits of Io, spot sparkling star clusters, and view Mars at aphelion while the April Full Moon lights the sky ...

Astronomers Spot a 'Highly Eccentric' Planet on Its Way to Becoming a Hot Jupiter ... Glimpses of a Volcanic World: New Telescope Images of Jupiter's Moon Io Rival Those from Spacecraft May ...

In March and April 2025, internet users shared a striking image that they claimed showed "Steeple Mountain," a massive point ...

A massive solar windstorm in 2017 compressed Jupiter's magnetosphere "like a giant squash ball," a new study reports.

Jupiter’s four largest moons – Io, Europa, Ganymede and Callisto – were the first ever discovered orbiting another planet ... more about the formation of its beautiful rings.

Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to ...

For instance, last year, the European Space Agency's Jupiter Icy Moon Explorer (JUICE ... it will use our planet's gravitational forces to boost its velocity to finally beeline it to ...