BREAKING!!! Scientists, MSM: "Uranus is leaking gas into space!!!!" | |
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Digital mix guy (OP) User ID: 78668696 United States 03/28/2020 10:13 PM Report Abusive Post Report Copyright Violation | Uranus is unquestionably weird. Swirling with mostly water, methane and ammonia, the solar system’s seventh planet is tipped over at 98 degrees, so its magnetic poles take turns directly facing the sun. And its magnetic field is strangely misaligned with the planet’s rotation, causing it to wildly lurch about. Back in 1986, the ice giant world got what remains its only visitor from Earth — Voyager 2, which is now more than 11 billion miles from Earth, but at that time flew a mere 50,600 miles above Uranus’s cloudy skies. As it passed, Voyager 2 heard an odd magnetic whisper, a signal so ephemeral that it went unnoticed. More than three decades later, scientists were taking a deep dive into the venerable spacecraft’s data pool, hoping to find scientific mysteries that could help support a return mission to Uranus and its ice giant sibling, Neptune. They unearthed that magnetic hiccup, and realized it represented the detection of a mass of electrically excited gas with a width 10 times Earth’s circumference. This ginormous bubble was a jettisoned part of Uranus’s atmosphere. Although only one was spotted, other gassy missiles may also be launched every 17 hours, the time it takes Uranus to complete one rotation. [link to www.nytimes.com (secure)] Last Edited by Digital mix guy Spock on 03/28/2020 10:13 PM Have no fear, Spock is here!!! LLAP |
Digital mix guy (OP) User ID: 78668696 United States 03/28/2020 10:13 PM Report Abusive Post Report Copyright Violation | Yet the wealth of data captured by NASA's Voyager 2 spacecraft some 34 years ago is still revealing tantalizing hints and reminding scientists of why we need to go back. Voyager 2 flew by Uranus in 1986, and now, thanks to a little blip discovered in some data, NASA scientists know it also flew through a plasmoid. A plasmoid is a giant magnetic bubble that likely pinched off part of the planet's atmosphere, sending it out into space. They found it while looking through old data to find questions they wanted to answer on future potential missions to Uranus. It's not unusual for planets to lose their atmospheres. Venus, Jupiter, Saturn and even Earth leak their atmospheres into space, according to NASA. [link to www.cnn.com (secure)] Last Edited by Digital mix guy Spock on 03/28/2020 10:14 PM Have no fear, Spock is here!!! LLAP |
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Digital mix guy (OP) User ID: 78668696 United States 03/28/2020 10:15 PM Report Abusive Post Report Copyright Violation | from official NASA press release: Unbeknownst to the entire space physics community, 34 years ago Voyager 2 flew through a plasmoid, a giant magnetic bubble that may have been whisking Uranus’s atmosphere out to space. The finding, reported in Geophysical Research Letters, raises new questions about the planet’s one-of-a-kind magnetic environment. A wobbly magnetic oddball Planetary atmospheres all over the solar system are leaking into space. Hydrogen springs from Venus to join the solar wind, the continuous stream of particles escaping the Sun. Jupiter and Saturn eject globs of their electrically-charged air. Even Earth’s atmosphere leaks. (Don’t worry, it will stick around for another billion years or so.) The effects are tiny on human timescales, but given long enough, atmospheric escape can fundamentally alter a planet’s fate. For a case in point, look at Mars. “Mars used to be a wet planet with a thick atmosphere,” said Gina DiBraccio, space physicist at NASA’s Goddard Space Flight Center and project scientist for the Mars Atmosphere and Volatile Evolution, or MAVEN mission. “It evolved over time” — 4 billion years of leakage to space — “to become the dry planet we see today.” Atmospheric escape is driven by a planet’s magnetic field, which can both help and hinder the process. Scientists believe magnetic fields can protect a planet, fending off the atmosphere-stripping blasts of the solar wind. But they can also create opportunities for escape, like the giant globs cut loose from Saturn and Jupiter when magnetic field lines become tangled. Either way, to understand how atmospheres change, scientists pay close attention to magnetism. That’s one more reason Uranus is such a mystery. Voyager 2’s 1986 flyby revealed just how magnetically weird the planet is. [link to www.nasa.gov (secure)] Have no fear, Spock is here!!! LLAP |
Miss Bunny Swan User ID: 78596230 Romania 03/28/2020 10:15 PM Report Abusive Post Report Copyright Violation | Oh oh oh I love Uranus! Thread: Cant stop thinking about the colour of Uranus. Pretty sure it’s in the background of my avatard: |
Digital mix guy (OP) User ID: 78668696 United States 03/28/2020 10:16 PM Report Abusive Post Report Copyright Violation | Oh oh oh I love Uranus! Quoting: Miss Bunny Swan Thread: Cant stop thinking about the colour of Uranus. Pretty sure it’s in the background of my avatard: lol thanks for the great comment!!! Have no fear, Spock is here!!! LLAP |
Digital mix guy (OP) User ID: 78668696 United States 03/28/2020 10:19 PM Report Abusive Post Report Copyright Violation | "old gas blob." Old gas blob from Uranus found in vintage Voyager 2 data Buried inside data that NASA's iconic Voyager 2 spacecraft gathered at Uranus more than 30 years ago is the signature of a massive bubble that may have stolen a blob of the planet's gassy atmosphere. That's according to scientists who analyzed archived Voyager 2 observations of the magnetic field around Uranus. These measurements had been studied before, but only using a relatively coarse view. In the new research, scientists instead looked at those measurements every two seconds. That detail showed what had previously been missed: an abrupt zigzag in the magnetic field readings that lasted just one minute of the spacecraft's 45-hour journey past Uranus. The tiny wobble in the Voyager 2 data represents something much larger since the spacecraft was flying so fast. Specifically, the scientists behind the new research believe the zigzag marks a plasmoid, a type of structure that wasn't understood particularly well at the time of the flyby in January 1986. But by now, plasmoids have earned scientists' respect. A plasmoid is a massive bubble of plasma, which is a soup of charged particles. Plasmoids can break off from the tip of the sleeve of magnetism surrounding a planet like a teardrop. Scientists have studied these structures at Earth and nearby planets, but never at Uranus or its neighbor Neptune, since Voyager 2 is the only spacecraft to date ever to visit those planet [link to www.livescience.com (secure)] Have no fear, Spock is here!!! LLAP |
Digital mix guy (OP) User ID: 78668696 United States 03/28/2020 10:19 PM Report Abusive Post Report Copyright Violation | Analysis of high-resolution Voyager 2 magnetic field data in Uranus' magnetotail reveals the presence of a loop-like plasmoid filled with planetary plasma traveling away from the planet. This first plasmoid observation in an Ice Giant magnetosphere elucidates that (1) both internal and external forces play a role in Uranus' magnetospheric dynamics, (2) magnetic reconnection contributes to the circulation of plasma and magnetic flux at Uranus, and (3) plasmoids may be a dominant transport mechanism for mass loss through Uranus' magnetotail. [link to agupubs.onlinelibrary.wiley.com (secure)] Last Edited by Digital mix guy Spock on 03/28/2020 10:20 PM Have no fear, Spock is here!!! LLAP |
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