New NASA research confirms that Saturn is losing its iconic rings at the maximum rate estimated from Voyager 1 & 2 observations made decades ago. The paths of falling "ring rains" are influenced by Saturn's magnetic field.
O'Donoghue and his colleagues observed this phenomenon with the huge Keck telescope in Hawaii and concluded that a combination of Saturn's gravity and magnetism pulls an Olympic-size swimming pool worth of material into the planet every 30 minutes.
The vast majority of Saturn's orbital circles are made up of chunks of ice ranging from microscopic to boulder-sized. He also noted that we could not catch the times when Jupiter, Uranus and Neptune was a large system of rings, which to date are likely to be considerably depleted. This was after the Cassini mission revealed that the unique features may only live up to 100 million years. According to him, this fact alone already indicates that "the whole system of the rings will disappear after 300 million years".
If O'Donoghue is right about the 100 million-year timeline, humanity should be grateful that we came along now, in time to see the rings before they're gone.
Growing up, learning the planets, Saturn and its rings always seemed like the coolest planet, the most fashion-forward of the bunch.
In this artist's impression, charged water molecules spiral around Saturn's magnetic field lines, flowing from the rings to the planet's upper atmosphere.
Leading up to the September 15, 2017 "Grand Finale" of NASA's Cassini spacecraft, when the mission team plunged the probe down into the planet's atmosphere, the spacecraft was sent on a trajectory to slip between the planet and its rings. Since ultraviolet light from the sun charges the ice grains and makes them respond to Saturn's magnetic field, varying exposure to sunlight should change the quantity of ring rain.
The new findings, published to the journal Icarus, have helped find more clues to answering a "chicken and egg" scenario of Saturn's formation, that being whether Saturn formed with the rings or whether the planet acquired them later on. This is key because Saturn's upper atmosphere extends nearly to the rings. That's a blink of an eye compared to Saturn's age of over 4 billion years.
These include changes in Saturn's upper atmosphere, density variations in the rings and three narrow dark bands around the planet at northern mid-latitudes. It is possible, in the age of the dinosaurs, that Saturn's rings were even larger and brighter than we see them today.
Some scientists believe the rings were formed as the planet was four billion years ago, while others suggest it was a much later addition, potentially formed when small, ice moons orbiting around the planet collided.
Trump's explanations of the payments have shifted over time. "Suppose he tried to use campaign funds to pay Stormy Daniels . Trump denies any collusion and has long denounced the probe being led by Special Counsel Robert Mueller as a "witch hunt".
While some were diverted to other London airports, others have reported being sent as far away as Paris, Bordeaux and Amsterdam. There have been occasional reports of drones almost hitting commercial airliners in the London area in recent years.
The development bodes well for Ford Motor Company and BMW, which export luxury vehicles made from the United States to China. Disclaimer: The views expressed in this article are those of the author and may not reflect those of Kitco Metals Inc .
FW Gabriel Jesus , 8 - Hard work, good link-up play and finally the goals that have been missing from his recent performances. Speaking at his pre-match news conference, Guardiola said of Aguero: "He did the last training session with the team".
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His quick movement of the ball will be crucial against Liverpool's counter-press as will his knack of finding the net on the run. Mourinho has struggled this season, with United's supposed refusal to heavily invest in the summer a key issue.
When Sirisena's decision was contested, he dissolved Parliament and called for a snap parliamentary election in January. The Cabinet will consist of 30 members and include six Sri Lanka Freedom Party (SLFP) parliamentarians, it said.
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