Jupiter's Moon Controls Auroras

The plasma from ionic sulphur produced by Jupiter's volcanic moon Io has been shown to affect the width and activity of that planet's permanent ring of auroral light surrounding each of its poles.

Jupiter Struck Again

Amateur astronomers have documented the third strike on Jupiter by a small comet or asteroid in a little over a year, forcing professional astronomers to re-evaluate the frequency and probability of what was once considered a rare event.

Meteor Strike on Jupiter

Reported by an amateur astronomer in Australia, a meteor impact on the planet Jupiter was caught on film and believed to be the first evidence of such an event.

Jupiter Loses Cloud Stripe

A striped cloud formation in Jupiter's atmosphere known as the Southern Equitorial Belt (SEB) has disappeared as part of a dynamic cycle on the planet lasting anywhere from three to fifteen years.

Temporary Moon for Jupiter

Astronomers have identified that the comet 147P/Kushida-Muramatsu was gravitationally snared by Jupiter as a temporary satellite, completing two orbits between 1949 and 1961 before gaining its freedom once again.

Object Impact on Jupiter

An amateur astronomer led NASA scientists to confirm that Jupiter was struck by an unknown object, most likely a comet, leaving behind a distinctive impact scar on the planet's south polar region.

Great Red Spot Shrinking

A storm raging in Jupiter's atmosphere for at least 300 years, the Great Red Spot is slowly shrinking in response to two other nearby storm systems that have recently emerged.