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Keyword: solarsystem

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  • Cave records provide clues to climate change

    09/26/2007 11:09:22 AM PDT · by Red Badger · 32 replies · 105+ views
    www.physorg.com ^ | 09/26/2007 | Georgia Institute of Technology
    A close up of one of the stalagmites analyzed in the study. Credit: Jud Partin When Georgia Tech Assistant Professor Kim Cobb and graduate student Jud Partin wanted to understand the mechanisms that drove the abrupt climate change events that occurred thousands of years ago, they didn't drill for ice cores from the glaciers of Greenland or the icy plains of Antarctica, as is customary for paleoclimatolgists. Instead, they went underground. Growing inside the caves of the tropical Pacific island of Borneo are some of the keys to understanding how the Earth's climate suddenly changed - several times -...
  • Astronomy Picture of the Day - Titan Seas Reflect Sunlight

    03/27/2022 2:36:59 PM PDT · by MtnClimber · 15 replies
    APOD.NASA.gov ^ | 27 Mar, 2022 | Image Credit: NASA, JPL-Caltech, U. Arizona, U. Idaho
    Explanation: Why would the surface of Titan light up with a blinding flash? The reason: a sunglint from liquid seas. Saturn's moon Titan has numerous smooth lakes of methane that, when the angle is right, reflect sunlight as if they were mirrors. Pictured here in false-color, the robotic Cassini spacecraft that orbited Saturn from 2004 to 2017 imaged the cloud-covered Titan in 2014 in different bands of cloud-piercing infrared light. This specular reflection was so bright it saturated one of Cassini's infrared cameras. Although the sunglint was annoying -- it was also useful. The reflecting regions confirm that northern Titan...
  • Big picture, big data: Swiss unveil VR software of universe

    10/27/2021 8:50:47 PM PDT · by blueplum · 10 replies
    AP via msn ^ | 12 October 2021 | JAMEY KEATEN, Associated Press
    LAUSANNE, Switzerland (AP) — The final frontier has rarely seemed closer than this — at least virtually. Researchers at one of Switzerland’s top universities are releasing open-source beta software on Tuesday that allows for virtual visits through the cosmos including up to the International Space Station, past the Moon, Saturn or exoplanets, over galaxies and well beyond.... ...VIRUP is accessible to everyone for free — though it does require at least a computer and is best visualized with VR equipment or 3D capabilities.... ...To be sure, VR games and representations already exist...But the EPFL team says VIRUP goes much farther...
  • Fantastic Visualization Shows What Would Happen if you Dropped a Ball Across the Solar System

    07/20/2021 7:50:23 AM PDT · by Red Badger · 32 replies
    www.universetoday.com ^ | JULY 19, 2021 | | BY NANCY ATKINSON
    Summertime means it’s time to play ball! But what would it be like to play ball on various locations across our Solar System? Planetary scientist Dr. James O’Donoghue has put together a fun animation of how quickly an object falls on to the surfaces of places like the Sun, Earth, Ceres, Jupiter, the Moon, and Pluto. The animation shows a ball dropping from 1 kilometer to the surface of each object, assuming no air resistance. You can compare, for example, that it takes 2.7 seconds for a ball to drop that distance on the Sun, while it takes 14.3 seconds...
  • ‘Mega comet’ 60 miles wide is about to fly through the solar system

    06/30/2021 6:47:17 AM PDT · by Roman_War_Criminal · 34 replies
    accuweather ^ | 6/26/21 | Brian Lada
    A comet unlike any other in recorded history is on a trajectory to zip through the inner solar system in less than a decade, but like most space rocks that make the news, it isn’t anything to lose sleep over. Comet 2014 UN271 was observed during a mission called the Dark Energy Survey back in 2014, but skywatchers didn’t realize that the data gathered was showing a comet until mid-June of this year. Pedro Bernardelli and Gary Bernstein were the two people who made this realization, giving Comet 2014 UN271 a name that rolls off the tongue a bit easier:...
  • The mysteries of the icy cloud around our Solar System

    06/28/2021 9:32:21 AM PDT · by BenLurkin · 24 replies
    BBC ^ | 20th June 2021 | Abigail Beall
    Astronomers have never directly seen the Oort Cloud and the most distant spacecraft ever launched by humankind – Voyager 1 – is not due to get there for another 300 years. But new research and upcoming space missions are now starting to reveal some of its secrets. The Oort Cloud was first predicted by Jan Oort in 1950 to explain the existence of comets like Neowise. Unlike short-period comets, which usually take less than 200 years to orbit the Sun and come from an icy disk beyond Neptune called the Kuiper Belt, the origin of those with much longer orbits...
  • Solar System is Traveling through Cloud of Supernova Debris: Study

    08/25/2020 10:50:41 AM PDT · by BenLurkin · 25 replies
    Sci-news ^ | Aug 25, 2020 by | Enrico de Lazaro
    Radioactive elements synthesized in massive stars are ejected into space via stellar winds and supernova explosions. Our Solar System moves through the interstellar medium and collects these extrasolar products. One such product is iron-60. Because it is not naturally produced on Earth, the presence of this radioactive isotope is a sensitive indicator of supernova explosions within the last few million years. Australian National University’s Dr. Anton Wallner and colleagues previously found traces of iron-60 at about 2.6 million years ago, and possibly another at around 6 million years ago, suggesting our planet had traveled through fallout clouds from nearby supernovae....
  • Massive Beauty

    03/17/2020 7:24:53 PM PDT · by BenLurkin · 31 replies
    NASA ^ | 03/16/2020
    NASA’s Juno mission captured this look at the southern hemisphere of Jupiter on Feb. 17, 2020, during the spacecraft’s most recent close approach to the giant planet. Not only is Jupiter the largest planet orbiting the Sun, it contains more than twice the amount of material of all other objects in the solar system combined — including all the planets, moons, asteroids and comets. In composition, Jupiter resembles a star, and scientists estimate that if it had been at least 80 times more massive at its formation, it could have become a type of star called a red dwarf rather...
  • Nobody knows what made the gargantuan crater on the dark side of the Moon

    09/26/2019 9:46:29 AM PDT · by BenLurkin · 58 replies
    fox news ^ | 09/26/2019 | By Brandon Specktor - Senior Writer | LiveScience
    Billions of years ago, something slammed into the dark side of the moon and carved out a very, very large hole. Stretching 1,550 miles (2,500 kilometers) wide and 8 miles (13 km) deep, the South Pole-Aitken basin... For decades, researchers have suspected that the gargantuan basin was created by a head-on collision with a very large, very fast meteor. Such an impact would have ripped the moon's crust apart and scattered chunks of lunar mantle across the crater's surface, providing a rare glimpse at what the moon is really made of. ... Now, however... After analyzing the minerals in six...
  • Researchers find icy corridor on Saturn’s giant moon

    05/06/2019 6:20:46 AM PDT · by vannrox · 73 replies
    earthSky ^ | 5may19 | Eleanor Imster
    While searching for the source of methane on Saturn’s large moon Titan, researchers found a completely unexpected corridor of methane ice wrapping nearly halfway around the moon. Three orientations of Titan’s globe. The icy corridor is mapped in blue. Image via Caitlin Griffith/UA Lunar and Planetary Laboratory.A research team has discovered huge ice feature on Titan while trying to understand where Saturn’s largest moon gets all of its methane. Like Earth, Titan has rain, seas and a surface of eroding organic material. However, on Titan it is methane, not water, that makes up the raindrops and fills the lakes.A team...
  • Dramatic Polar Light Show On Saturn

    08/31/2018 2:25:58 AM PDT · by zeestephen
    Watts Up With That ^ | 30 August 2018 | Anthony Watts
    Astronomers using the Hubble Space telescope have taken a series of images featuring the fluttering auroras at the north pole of Saturn. The observations were taken in ultraviolet light and the resulting images provide astronomers with the most comprehensive picture so far of Saturn’s northern aurora...Because the atmosphere of each of the four outer planets in the Solar System is – unlike the Earth – dominated by hydrogen, Saturn’s auroras can only be seen in ultraviolet wavelengths
  • 'Cataclysmic' collision shaped Uranus' evolution

    07/03/2018 6:34:48 AM PDT · by Red Badger · 30 replies
    phys.org ^ | July 2, 2018 | Durham University
    The collision with Uranus of a massive object twice the size of Earth that caused the planet's unusual spin, from a high-resolution simulation using over ten million particles, coloured by their internal energy. Credit: Jacob Kegerreis/Durham University ___________________________________________________________________________ Uranus was hit by a massive object roughly twice the size of Earth that caused the planet to tilt and could explain its freezing temperatures, according to new research. Astronomers at Durham University, UK, led an international team of experts to investigate how Uranus came to be tilted on its side and what consequences a giant impact would have had on the...
  • This Extraterrestrial Stone Contains Compounds Not Found Anywhere Else in Our Solar System

    01/09/2018 9:03:11 PM PST · by BenLurkin · 31 replies
    sciencealert.com ^ | Jan 10, 2018 | Michelle Starr
    The Hypatia stone, as it is known, is not only extraterrestrial in origin. It contains micro-mineral compounds not known to occur anywhere on Earth, not found in any other meteorites, and not known to occur anywhere in the Solar System. It's a discovery that raises some questions about the formation of the Solar System. Subsequent analysis revealed that the diamond-filled stone was not from any known comet or meteorite - its combined features were unique among known extraterrestrial materials. One hypothesis proposed that it might be a fragment of comet nucleus, shocked on impact, and another found that it was...
  • Is There Still an Astronomy Ping List?

    06/22/2017 6:44:36 PM PDT · by originalbuckeye · 24 replies
    6/22/17 | Originalbuckeye
    Sorry for the Vanity, but I was on an Astronomy Ping List and haven't seen any pictures in a good, long while. Is it still active?
  • New 'large and bright' dwarf planet discovered in our solar system (unnamed,700 year solar orbit)

    07/13/2016 7:24:27 PM PDT · by NormsRevenge · 24 replies
    Yahoo News ^ | 7/11/16 | Fox News
    Using a telescope at the top of Mauna Kea, Hawaii, scientists have discovered a new dwarf planet in our solar system, a body about 435 miles across that lacks a name and that researchers still know little about. The new dwarf planet, dubbed 2015 RR245, has such a huge, highly elliptical orbit that it takes an astonishing 700 Earth years to complete one trip around the sun, and it ventures over 120 times further away from the sun than our planet does. "The icy worlds beyond Neptune trace how the giant planets formed and then moved out from the Sun....
  • Astronomy Picture of the Day -- Galaxy and Planets Beyond Bristlecone Pines

    06/19/2016 6:48:50 AM PDT · by SunkenCiv · 9 replies
    NASA ^ | Sunday, June 19, 2016 | (see photo credit)
    Explanation: What's older than these ancient trees? Nobody you know -- but almost everything in the background of this picture. The trees are impressively old -- each part of the Ancient Bristlecone Pine Forest located in eastern California, USA. There, many of the oldest trees known are located, some dating as far back as about 5,000 years. Seemingly attached to tree branches, but actually much farther in the distance, are the bright orbs of Saturn (left) and Mars. These planets formed along with the Earth and the early Solar System much earlier -- about 4.5 billion years ago. Swooping down...
  • Planet Nine's profile fleshed out

    04/09/2016 7:29:13 PM PDT · by JimSEA · 52 replies
    BBC ^ | 4/8/2916 | Paul Rincon
    In January, researchers at Caltech in the US suggested a large, additional planet might be lurking in the icy outer reaches of the Solar System. Now, a team at the University of Bern in Switzerland has worked out what they say are upper and lower limits on how big, bright and cold it might be. The study has been accepted by the journal Astronomy and Astrophysics. Prof Mike Brown and Dr Konstantin Batygin made their case for the existence of a ninth planet in our Solar System orbiting far beyond even the dwarf world Pluto. There are no direct observations...
  • Researchers find evidence of a real ninth planet

    01/20/2016 7:52:49 PM PST · by Utilizer · 31 replies
    Phys.org ^ | January 20, 2016 | Kimm Fesenmaier
    Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune (which orbits the sun at an average distance of 2.8 billion miles). In fact, it would take this new planet between 10,000 and 20,000 years to make just one full orbit around the sun. The researchers, Konstantin Batygin and Mike Brown, discovered the planet's existence through mathematical modeling...
  • Astronomy Picture of the Day -- To Scale: The Solar System

    12/25/2015 7:21:35 AM PST · by SunkenCiv · 19 replies
    NASA ^ | December 25, 2015 | (see photo credit)
    Explanation: Want to build a scale model Solar System? A blue marble 1.4 centimeters (about half an inch) across would be a good choice for a scale model Earth. Since the Sun is 109 times the diameter of Earth, a 1.5 meter diameter balloon could represent the Sun. But the distance between the Earth and Sun, 150 million kilometers, would translate to just under 180 meters (590 feet) at the same scale. That would mean the completed project, including the orbits of the outer planets, is probably not going to fit in your backyard. Still, you might find enough room...
  • Astronomy Picture of the Day -- A Gegenschein Lunar Eclipse

    11/14/2015 12:50:55 AM PST · by SunkenCiv · 6 replies
    NASA ^ | November 14, 2015 | (see photo credit)
    Explanation: Is there anything interesting to see in the direction opposite the Sun? One night last month, there were quite a few things. First, the red-glowing orb on the lower right of the featured image is the full moon, darkened and reddened because it has entered Earth's shadow. Beyond Earth's cone of darkness are backscattering dust particles orbiting the Sun that standout with a diffuse glow called the gegenschein, visible as a faint band rising from the central horizon and passing behind the Moon. A nearly horizontal stripe of green airglow is also discernable just above the horizon, partly blocked...