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Keyword: pluto

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  • Neptune Might Have Captured Triton

    05/10/2006 12:31:09 PM PDT · by NormsRevenge · 21 replies · 1,120+ views
    Space.com on Yahoo ^ | 5/10/06 | Sara Goudarzi
    Neptune's largest moon, Triton, was originally a member of a duo orbiting the Sun but was kidnapped during a close encounter with Neptune, a new model suggests. Triton is unique among large moons in that it orbits Neptune in a direction opposite to the planet's rotation, which long ago led scientists to speculate that the moon originally orbited the Sun. But until now, no convincing theory for how Triton paired with Neptune existed. Gravity might have pulled Triton away from its companion to make it an orbiting satellite of Neptune, researchers report in a new study published in the May...
  • Neptune’s Moon of Triton

    07/28/2015 11:52:43 AM PDT · by BenLurkin · 7 replies
    universetoday.com ^ | July 28, 2015 | Fraser Cain
    The planets of the outer Solar System are known for being strange, as are their many moons. This is especially true of Triton, Neptune’s largest moon. In addition to being the seventh-largest moon in the Solar System, it is also the only major moon that has a retrograde orbit – i.e. it revolves in the direction opposite to the planet’s rotation. This suggests that Triton did not form in orbit around Neptune, but is a cosmic visitor that passed by one day and decided to stay. ... Triton has a radius, density (2.061 g/cm3), temperature and chemical composition similar to...
  • The Moons of Neptune

    09/09/2015 2:18:40 PM PDT · by BenLurkin · 10 replies
    universetoday.com ^ | September 8, 2015 | Matt Williams
    Neptune’s moons are ...all are named for gods of the sea, or for the children of Poseidon (which include Triton, Proteus, Depsina and Thalassa), minor Greek water dieties (Naiad and Nereid) or Nereids , the water nymphs in Greek mythology (Halimede, Galatea, Neso, Sao, Laomedeia and Psamathe). Neptune’s Regular Moons are those located closest to the planet and which follow circular prograde orbits that lie in the planet’s equatorial plane. They are, in order of distance from Neptune: Naiad , Thalassa , Despina, Galatea, Larissa , S/2004 N 1, and Proteus. All but the outer two are within Neptune-synchronous orbit......
  • Neptune's Moons Are Caught in One of The Strangest Orbits Ever Seen

    07/10/2020 12:17:20 PM PDT · by Red Badger · 26 replies
    www.sciencealert.com ^ | 10 JULY 2020 | DAVID NIELD
    (NASA/JPL-Caltech) ================================================================================= Life isn't always easy for astrophysicists: just when they've figured out another aspect of the patterns of movement in our Solar System, along come two of the moons of Neptune to mess everything up. The two moons in question are Naiad and Thalassa, both around 100 kilometres or 62 miles wide, which race around their planet in what NASA researchers are calling a "dance of avoidance". Their strange orbit was first detected by NASA researchers in November 2019. Compared with Thalassa, Naiad's orbit is tilted by about five degrees – it spends half of its time above Thalassa...
  • Opposite World: Pluto’s Ice Caps Made of Methane, Turns Earth’s Process Upside Down

    10/16/2020 11:33:41 AM PDT · by Red Badger · 12 replies
    scitechdaily.com ^ | October 14, 2020 | By Frank Tavares, NASA's Ames Research Center
    Pluto as seen from data taken by New Horizon’s flyby in 2015 of the dwarf planet, with a close-up view of the Pigafetta Montes mountain range. The colorization on the right indicates the concentrations of methane ice, with the highest concentrations at higher elevations in red, decreasing downslope to the lowest concentrations in blue. Credit: NASA/JHUAPL/SwRI and Ames Research Center/Daniel Rutter ============================================================================= The mountains discovered on Pluto during the New Horizons spacecraft’s flyby of the dwarf planet in 2015 are covered by a blanket of methane ice, creating bright deposits strikingly like the snow-capped mountain chains found on Earth. New...
  • Pluto Has a Surprising Similarity to The 5 Biggest Moons of Uranus

    09/15/2020 10:18:51 AM PDT · by MtnClimber · 32 replies
    Science Alert ^ | 15 Sep, 2020 | MICHELLE STARR
    Uranus, far from Earth in the darker region of the Solar System's planetary reach, isn't alone. It's accompanied by a retinue of moons - 27, to be precise. Far and dim, these moons are difficult to study, but astronomers have made an accidental discovery while observing Uranus. According to infrared images of the five main moons of Uranus, their composition is closer to that of dwarf planets like Pluto and Haumea - compact, rocky objects with an icy crust - than the more fluffy composition of the smaller Uranian moons. Uranus orbits the Sun at an average distance around 20...
  • Over a Hundred New Large Objects Found in the Kuiper Belt

    03/13/2020 10:29:53 PM PDT · by BenLurkin · 30 replies
    A new paper describes how the researchers connected the moving dots to find the new TNOs, and also says this new approach could help look for the hypothetical Planet Nine and other undiscovered worlds. The Dark Energy Survey (DES) is designed to probe the origin of the accelerating universe and help uncover the nature of dark energy by measuring the 14-billion-year history of cosmic expansion with high precision. It studies galaxies and supernovas and precisely tracks their movements. This survey has been active since 2013, using the 4-meter Blanco Telescope located at Cerro Tololo Inter-American Observatory (CTIO) in Chile. The...
  • Scientists Captivated By Pluto’s Emerging Geological Wonders

    07/11/2015 8:20:46 AM PDT · by BenLurkin · 35 replies
    universetoday.com ^ | on July 10, 2015 | Bob King
    Day by day, new images appear showing an ever clearer view of a world we inexplicably love. Call it a dwarf planet. Call it a planet. It’s the unknown, and we can’t help but be drawn there. Pluto made history when it was discovered in 1930. In 2015, it’s doing it all over again. Check out the new geology peeping into view.I’m reminded of the early explorers who shoved off in wooden ships in search of land across the water. After a long and often perilous journey, the mists would finally clear and the dark outline of land take form...
  • Astronomers Reveal Best-Ever Images Of The Far Side Of Pluto

    10/24/2019 10:26:44 AM PDT · by DoodleBob · 78 replies
    Forbes ^ | October 22, 2019 | Jonathan O'Callaghan
    A team of astronomers from NASA’s New Horizons mission has unveiled our best look yet at the far side of Pluto, which went unseen to the spacecraft during its historic July 2015 flyby of the dwarf planet. We have only seen one hemisphere of Pluto in high-resolution because the New Horizons flyby of Pluto lasted just hours, whereas the dwarf planet takes 6.4 Earth days to rotate. Thus as New Horizons flew past, one side of the world was illuminated by the Sun, but the other was shrouded in darkness. However, using images taken by the spacecraft while it was...
  • Buck Sexton, Jesse Kelly on The First, a new news and talk network on Pluto TV

    10/15/2019 10:46:32 AM PDT · by SunStar · 6 replies
    Buck Sexton's Facebook page ^ | 10/15/2019 | Buck Sexton
    I’m excited to announce a new chapter in The Buck Sexton Show. Starting today, you can watch me on The First, a new network available for FREE on Pluto TV channel 248. The First is all about free speech and big ideas. It’s a home for people who don’t blindly trust the New York Times, NPR, or CNN — a unique platform for people who are skeptical of the mainstream media and interested in going deeper than the talking points. The First launches today in preview mode so you can get an early look and provide your feedback. Check it...
  • Moons that escape their planets are now called ‘ploonets’

    07/13/2019 2:40:31 PM PDT · by BenLurkin · 67 replies
    BGR ^ | 07/11/2109 | Miek Wehner
    The researchers suggest that this type of world may a result of large “hot Jupiter” exoplanets migrating toward their host star. Exoplanet surveys have detected several such planets, and it’s believed that they likely formed at a greater distance from their respective stars and then slowly crept inward. When that happens, it’s possible that the change in gravitational forces would prompt large moons to break free from their existing orbits and become standalone worlds of their own. Computer simulations showed that this could indeed happen, and in those cases, the researchers believe we should call them ploonets. Remarkably, our own...
  • Queen guitarist Brian May weighs in on Pluto as a planet (he has a doctorate in astrophysics)

    08/29/2019 9:19:58 PM PDT · by DoodleBob · 56 replies
    CNET ^ | August 29, 2019 | Amanda Kooser
    You might not care what Keith Richards or Jimmy Page think about Pluto's status as a dwarf planet, but when Queen guitarist Brian May speaks up about it, it's worth a listen. May, who received his doctorate in astrophysics in 2007, posted his Pluto thoughts on Instagram late Wednesday after hearing about how NASA administrator Jim Bridenstine still thinks of Pluto as a full-on planet. The International Astronomical Union (IAU) tightened up its definition of a planet in 2006 and demoted Pluto to dwarf-planet status, sparking an ongoing debate that just won't rest. May is on the pro-planet side of...
  • What keeps Pluto's ocean from freezing?

    05/20/2019 5:57:14 PM PDT · by EdnaMode · 37 replies
    CNN ^ | May 20, 2019 | Ashley Strickland
    hen NASA's New Horizons spacecraft flew past Pluto in 2015, researchers hoped that its data would help them unravel some of the dwarf planet's mysteries. Instead, the discoveries made during the close-up look at Pluto and its moon Charon revealed more questions that needed answering. One of the big revelations from the flyby was the discovery of an ocean beneath the icy shell encapsulating Pluto. The ice shell was thin in a spot near the equator that's about the size of Texas, known as Sputnik Planitia, which helped researchers notice Pluto's odd topography and suggest the ocean's existence. But this...
  • Pluto and the Young Solar System

    04/09/2019 10:49:46 AM PDT · by fishtank · 19 replies
    Biblical Science Institute ^ | 3-8-19 | Dr. Jason Lisle
    Pluto and the Young Solar System by Dr. Lisle | Mar 8, 2019 | Astronomy, Origins | Pluto and the Young Solar System The outer solar system continues to confirm the biblical timescale. When the New Horizons spacecraft flew past the Pluto system in July 2015, its findings challenged secular expectations. In the standard old-universe model, Pluto formed about 4.5 billion years ago. Yet, New Horizons found evidence of a geologically “youthful” surface for both Pluto and its largest moon Charon. A recent study examining the sparse cratering on these worlds provides even additional evidence of their biblical age of...
  • Earth-Shattering Theory:FINALLY, THE DETAILS FOR FORMING THE MOON WORK OUT

    10/11/2001 6:53:58 AM PDT · by callisto · 18 replies · 1+ views
    Scientific American ^ | Nov. 1, 2001 edition | GEORGE MUSSER
    If you ever find yourself at a cocktail party of astrophysicists and don't know what to say, try this: "But what about the angular momentum?" No matter what the topic of conversation, you'll be guaranteed to sound erudite. Nearly every field of astronomy, from galaxy formation to star formation, has an "angular momentum problem." Nothing in the cosmos ever seems to spin or orbit at the rate it should. The moon is no exception. It is the flywheel to end all flywheels; if its orbital angular momentum were transferred to Earth's axial rotation, our planet would come close to spinning ...
  • 12 years after launch, New Horizons probe zeroes in on mysterious Ultima Thule

    12/02/2018 8:47:33 PM PST · by Simon Green · 21 replies
    Geek Wire ^ | 12/02/18 | Alan Boyle
    Act Two of the 12-year-old New Horizons mission to Pluto and the solar system’s icy Kuiper Belt is heating up, with less than a month to go before NASA’s piano-sized spacecraft makes history’s farthest-out close encounter with a celestial object. The New Year’s flyby of a mysterious Kuiper Belt object (or objects) known as Ultima Thule (UL-ti-ma THOO-lee) follows up on the mission’s first act, which hit a climax three years ago with a history-making flyby of Pluto. Launched in 2006, New Horizons was never meant to be a one-shot deal. Even before the Pluto flyby, mission managers used the...
  • The Curious Case of Missing Asteroids

    03/03/2009 7:31:32 PM PST · by SunkenCiv · 38 replies · 720+ views
    NASA Solar System Exploration ^ | February 25, 2009 | Lori Stiles
    University of Arizona scientists have uncovered a curious case of missing asteroids. The main asteroid belt is a zone containing millions of rocky objects between the orbits of Mars and Jupiter. The scientists find that there ought to be more asteroids there than researchers observe. The missing asteroids may be evidence of an event that took place about 4 billion years ago, when the solar system's giant planets migrated to their present locations. UA planetary sciences graduate student David A. Minton and UA planetary sciences professor Renu Malhotra say missing asteroids is an important piece of evidence to support an...
  • Asteroid Belt Loaded with Former Comets

    07/16/2009 7:32:16 PM PDT · by SunkenCiv · 18 replies · 1,536+ views
    Discovery ^ | Thursday, July 16, 2009 | AFP
    Many of the primitive bodies wandering the asteroid belt between Mars and Jupiter are former comets, tossed out of orbit by a brutal ballet between the giant outer planets, said a team of astrophysicists. A commonly accepted theory is that the asteroid belt is the rubble left over from a "proto-planetary disk," the dense ring of gas that surrounds a new-born star. But the orbiting rocks have long been a source of deep curiosity. They are remarkably varied, ranging from mixtures of ice and rock to igneous rocks, which implies they have jumbled origins. The answer to the mystery, according...
  • On the Fringe: Astronomers look to the Kuiper belt for clues to the solar system's history

    01/14/2010 3:15:11 PM PST · by SunkenCiv · 12 replies · 732+ views
    Science News ^ | January 16th, 2010 | Ron Cowen
    Beyond Neptune lies a reservoir of... icy debris left to roam the solar system's dim outer limits having never coalesced into planets... Named for astronomer Gerard Kuiper, who in 1951 predicted the existence of this 3-billion-kilometer-wide swath of icy chunks, the Kuiper belt didn't begin to reveal itself to observers until 1992. Since then, researchers have found more than a thousand bodies filling a doughnut-shaped belt, which extends 30 to about 50 astronomical units from the sun. One astronomical unit is the average distance between the Earth and sun... The puffed-up, elongated orbits and present-day sparseness of the belt all...
  • 'Jupiter swallowed planet 10 times the size of Earth'

    08/13/2010 12:01:53 PM PDT · by LibWhacker · 41 replies · 1+ views
    Jupiter, the biggest planet in the solar system, might have gained its dominant position after swallowing up a smaller planet, scientists believe. Studies on Jupiter have revealed that the giant planet, which is more than 120 times bigger than the Earth, has an extremely small core that weighs just two to 10 Earth masses. Now scientists have claimed that Jupiter's core might have been vaporised in huge collision with a planet up to ten times the size of Earth, the New Scientist reported. Researchers led by by Shu Lin Li of Peking University in China have modelled what might have...