NASA officials said what Juno spotted was 'the most powerful volcanic event ever recorded on the most volcanic world in our ...

Watch a bright Moon dominate the sky, trace the Winter Hexagon, and continue enjoying the evening parade of planets in the ...

Loki Patera is 202 kilometres (126 mi) in diameter, covers 20,000 sq km (7,700 sq mi), and was the largest volcanic feature found on Io until these new observations revealed the hot spot in the south ...

On Dec. 27, 2024, NASA's Juno spacecraft swooped by the volcanic world Io. It witnessed a giant eruption.

The eruption released energy six times greater than all Earth's power plants combined, exceeding 80,000 trillion watts.

Skywatchers on Thursday evening, Feb. 6, will notice an eye-catching pairing-off between two of the brightest objects in the ...

Venus, Jupiter, and Mars dominate the sky. Catch your last views of Saturn as early in the month, the Moon passes in front of ...

It offers a wealth of detail even in small scopes. Most days all four Galilean moons - Io, Europa, Ganymede, and Callisto - are visible; at times one is hidden behind or transiting in front of the ...

Today, these four moons are collectively known as the “Galilean satellites,” a tribute to their discoverer. In 1614, the German astronomer Johannes Kepler suggested naming the satellites after ...

with four particularly large ones known as the Galilean moons (Io, Europa, Ganymede, and Callisto). These moons exhibit diverse characteristics, from volcanic activity on Io to the potential for a ...