• News
  • Science

Ten New Moons Discovered Around Jupiter

Ten New Moons Discovered Around Jupiter

"New cameras allow us to cover the whole space around Jupiter in a few images, and this camera is well-shaded", Sheppard said. Most of these prograde moons take less than a year to travel around the planet.

The survey looked for objects one kilometre and larger, so there is a chance that there are other, smaller "moonlets" in orbit around the giant Jupiter.

Astronomers are still finding moons at Jupiter, 400 years after Galileo used his spyglass to spot the first ones.

With the moon's orbit set at an angle to the rest, this means that Valetudo doesn't take the riskiest path around Jupiter, but it does dive through the orbits of the retrograde moons, inviting a collision at some point.

Astronomers made the discoveries using the Blanco telescope at the Cerro Tololo Inter-American Observatory in Chile and the Subaru telescope on Mauna Kea, Hawaii. Others including the oddball are "pro-grade" moons travelling with the planet's spin. This tells us something about the timing of the formation of these moon families, which, in turn, tells us something new about the formation of the Solar System. To check whether this could have happened, the researchers are working on supercomputer simulations of these orbits to calculate how many times an object with Valetudo's orbit could have collided with the retrograde moons in the solar system's lifetime.

Due to their sizes-one to three kilometers-these moons are more influenced by surrounding gas and dust. Two of the newly discovered moons were found among these prograde moons, and take a little less than a year to go around in their orbit once.

The last moon is fittingly weird, considering how freakish Jupiter is. Valetudo is the name of Jupiter's great-granddaughter and a Roman goddess of health and hygiene, so it fits the bill. They are thought to be the remnants of larger parent bodies that broke apart as a result of a collision with other bodies like asteroids, comets or other moons. If small moons like these were around when the solar system was still thick with gas and dust, drag forces would have slowed them down and caused them to fall into Jupiter, never to be seen again.

The team think this small "oddball" prograde moon could be the last-remaining remnant of a once-larger prograde-orbiting moon that formed some of the retrograde moon groupings during past head-on collisions. These are part of a group of prograde moons that orbit closer to Jupiter than the retrograde moons do. Even though a dozen new moons is a pretty good haul, Sheppard expects that more searching will turn up even more moons. The confirmation of 10 was announced Tuesday; two were confirmed earlier.

"The most interesting find is this object we're calling Valetudo", Sheppard says. "Head-on collisions would quickly break apart and grind the objects down to dust".

One of the new moons was described as a "real oddball" by researcher Scott Sheppard at the Carnegie Institution for Science, because of its tiny size, it measuring just about a half-mile (one kilometer) across.

The newfound moons are small, between about 1 and 3 kilometers across.

"If we do find this planet in the next few years, it would be a pretty incredible discovery for astronomy".

Leave Your Comment

Leave Your Comment


Latest News

Breaking News



Recommended

Trump says North Atlantic Treaty Organisation is better funded 'only because of me'

But Trump crossed a line with his comments Monday, Murphy said, by "throwing the entire intelligence community under the bus". "I think he may in fact get his wish and go down in history as the least democratic president we've had".

Xiaomi Mi Max 3 revealed ahead of official announcement

Other leaked specifications hint that Mi Max 3 will be a mid-range phone with Snapdragon 636 octa-core processor and 4GB RAM . The rumour mill of the Xiaomi Mi Max 3 is not really on a roll here, but here's what we know so far from our last report .

Raptors Could Be In 'Driver's Seat' To Trade For Kawhi Leonard

Per Wojnarowski and Shelburne, "San Antonio has been determined in demanding a sizeable return on Leonard". But the second - his upcoming free agency - remains the biggest road block in any potential Leonard deal.

Djokovic 'overwhelmed' after downing Nadal in Wimbledon classic

The world number one came roaring back and broke Djokovic's serve in the fourth game, as the Serb sent a forehand into the net. Nadal will regret his missed opportunity the night before, when he was in the ascendancy but passed up two set points.

Amazon laughs off Prime Day glitches

But Amazon said its workers were paid fairly, with permanent staff earning €12.22 (£10.81) an hour or more after two years. But now, in the midst of all these Amazon Prime Day deals , there's a chance for you to get a great deal on a subscription.

Trump Defends Himself Against Sharp Criticism Over Putin News Conference

His comment came - amid rising rebuke by his own party - about 27 hours after his original, widely reported statement. Speaker of the House, Paul Ryan said earlier: "Let's be very clear - Russian Federation meddled in our election".

Syrian government targets rebels near Israel-occupied Golan

The AFP correspondent said hundreds of fighters and a few of their relatives had boarded around 15 buses which had then set off. Rebels began handing over their heavy weapons on Saturday and continued to do so on Sunday morning.

Huge iceberg threatens tiny Greenland village

Officials have said they've never seen an iceberg so big, so have evacuated the homes of those living nearest to it. Just off the Innaarsuit coastline, a Danish Royal Navy ship is standing by in case a full evacuation is needed.

UK’s May survives Parliament Brexit rebellion, but loses another minister

With her team split down the middle over how to handle the biggest issue facing the country, time is running out. The prime minister was accused of "caving in" to Eurosceptic demands.

Kimmel and Colbert draw same conclusion after Trump sides with Putin

The damage inflicted by President Trump's naiveté, egotism, false equivalence, and sympathy for autocrats is hard to calculate. The news of their row comes as the two world leaders meet in Helsinki, the Finnish capital, for their first bi-lateral summit.