NASA’s Juno spacecraft – whose mission in orbit around Jupiter was recently extended to 2025 – has been used to discover a rapidly expanding auroral ring at the very fringes of the Jovian magnetosphere.
Juno arrived at Jupiter in 2016. It’s in a 53-day orbit around the planet. Close sweeps past the planet are called “perijoves” (peri means “near”). Here are some spectacular images from the most recent sweep, Perijove 25, in February.
NASA’s Juno mission to Jupiter has now successfully executed a 10.5-hour propulsive maneuver. It’ll keep Juno – a solar-powered spacecraft – out of a mission-ending shadow due to have been cast by Jupiter onto the craft in November.
Jupiter’s moon Io is the most volcanically active world in our solar system. The Juno spacecraft – now orbiting Jupiter – has now gazed across a distance to acquire new images and insights about the “fires of Io.”
Jupiter’s large size and cool core make it an excellent target in the search for dark matter. A team of scientists is analyzing gamma-ray data from the Fermi Telescope looking for signs of the elusive substance.
The zodiacal light is a strange pyramid of light that extends from the eastern or western horizon, before dawn or as true darkness falls. It was known to stem from dust moving in the plane of our solar system. The Juno spacecraft has found that Mars might be the source of the dust.
Hot, active volcanoes produce almost half of Jupiter’s moon Io’s sulfur atmosphere, according to new observations using the ALMA telescope. The rest comes from cold sulfur deposits that freeze on the surface, then sublimate in sunlight.
Scientists with NASA’s Juno mission say they have detected sprites or elves – electrical phenomena above thunderstorms on Earth – in the clouds of Jupiter for the first time. Unlike the red-colored earthly ones however, the Jovian ones are blue.
Planetary systems with both super-Earths and Jupiter-type planets may be common, according to a new study. As in our own solar system, the giant planets would act as “bodyguards” protecting the smaller planets from asteroid impacts.
The cloud bands on brown dwarf Luhman 16A were found via instruments known as polarimeters. An astronomer said they’re like “… an astronomer’s polarized sunglasses. But instead of trying to block out that glare, we’re trying to measure it.”
The well-known bright star Betelgeuse – a red giant star, famous for its name and for the fact that it’ll explode someday – has become noticeably dimmer since late October. Here’s what astronomers think is happening.
The Juno spacecraft’s last perijove – or closest point to Jupiter – resulted in a treasure trove of images. Its next perijove is coming up on December 26. Get updated here, and view Juno’s latest amazing images.
A new study of the atmospheres of known giant exoplanets suggests that water – an essential ingredient for life – may be common on other worlds in our Milky Way galaxy. At the same, there may be less of it than astronomers once expected.
Scientists used Juno spacecraft data and models of how Jupiter’s inner core should look to probe the giant planet’s early history. They now think an object with 10 times Earth’s mass might have struck Jupiter billions of years ago.
Jupiter’s Great Red Spot is a giant storm, the largest known in our solar system. It’s been seen through earthly telescopes for more than 300 years. Lately, it’s been showing signs of breaking apart. Is this the beginning of the end for the beloved Spot?
Triton is Neptune’s largest moon. It’s a bizarre and geologically active world – a possible ocean moon – visited by Voyager 2 in 1989. Now, NASA has proposed a new mission called Trident to sweep past Triton again in 2038.
Uranus and Neptune – the ice giants of the solar system – are distant worlds last visited by the Voyager 2 spacecraft in the late 1980s. But the Hubble Space Telescope is still keeping an eye on them and their dynamic atmospheres.
This new Juno spacecraft image shows magnificent swirling clouds in Jupiter’s dynamic atmosphere. The craft was about 4,400 miles (7,000 km) from the planet’s cloud tops on October 29, over about 40 degrees north.