Ganymede tagged posts

Strong whistler mode waves observed in the vicinity of Jupiter’s moons. Nature Communications, 2018; 9 (1) DOI: 10.1038/s41467-018-05431-x

Chorus waves are electromagnetic waves. Converted to sound they sound like singing and chirping birds at dawn. They can cause polar lights above the Earth as well as damage to satellites. Now, a team of researchers has found that such waves are intensified million-fold around Jupiter’s moon Ganymede. This study provides important observational constraints for theoretical studies.

These are the new results from a systematic study on Jupiter’s wave environment taken from the Galileo Probe spacecraft...

Hubble revealed the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter’s largest moon this part March. The subterranean ocean is thought to have more water than all the water on Earth’s surface. Identifying liquid water is crucial in the search for habitable worlds beyond Earth and for the search for life, as we know it.

“This discovery marks a significant milestone, highlighting what only Hubble can accomplish,” said John Grunsfeld, assistant administrator of NASA’s Science Mission Directorate. “In its 25 years in orbit, Hubble has made many scientific discoveries in our own solar system. A deep ocean under the icy crust of Ganymede opens up further exciting possibilities for life beyond Earth.”

Ganymede is the largest moon in our solar system and the only moon w...

Every morning in late October, Venus, Jupiter, and Mars will rise in the east an hour or so before the sun. Together, they form a triangle in the pre-dawn sky. Venus and Jupiter are the brightest vertices – visible even after the black pre-dawn sky turns cobalt blue. Once you find them, you will have little trouble locating the dimmer Red Planet, which completes the triangle while the sky is still black.

Although any morning in late October is a good time to look, the six day stretch from Oct. 24th – 29th is the best. That’s because during this time, the triangle of planets will shrink until it is less than 5 degrees wide.

Typical binoculars can see a patch of sky about 6 or 7 degrees wide...