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Keyword: europa

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  • The Purported Plumes of Jupiter's Moon Europa Are Missing 'Hotspot' Engines

    10/24/2018 8:49:46 AM PDT · by BenLurkin · 8 replies
    Space.com ^ | October 24, 2018 07:00am ET | Nola Taylor Redd,
    Plumes are common throughout the solar system. Jupiter's moon Io is constantly shooting volcanic material into the air. Saturn's icy moon Enceladus famously blasts water vapor and other material from its subsurface ocean into space via a set of geysers near the south pole. And Earth is rich in geysers, from Yellowstone National Park's Old Faithful to Iceland's Great Geysir. Firing off the gas that makes up these plumes requires an energy source, which usually heats up the ground around the plume source. Enceladus, Io and Earth all have hotspots around their geysers and volcanoes. But not Europa, as far...
  • 50-Foot-Tall Ice Spikes Cover Europa, New Study Suggests

    10/09/2018 9:45:30 AM PDT · by ETL · 25 replies
    Sci-News.com ^ | Oct 9, 2018 | News Staff / Source
    On Earth, the sublimation of massive ice deposits at equatorial latitudes under cold and dry conditions in the absence of any liquid melt leads to the formation of spiked and bladed textures eroded into the surface of the ice.Known as penitentes, these sublimation-sculpted blades grow to between 3 to 16 feet (1-5 m) tall, but they are restricted to high-altitude tropical and subtropical conditions, such as in the Andes.Europa, however, has the perfect conditions necessary for penitentes to form more uniformly — its surface is dominated by ice.It has the thermal conditions needed for ice to sublime without melting; and...
  • Jupiter's Moon Ganymede Generates Incredible Magnetic Waves

    08/07/2018 10:12:39 PM PDT · by BenLurkin · 26 replies
    Gizmodo ^ | 08/06/2018
    NASA’s Galileo spacecraft surprised scientists when it revealed that Jupiter’s moon Ganymede generated its own magnetic field. But new research shows Ganymede also creates incredibly powerful waves that rocket particles to enormous energies. Scientists revealed these huge electromagnetic waves while studying old data from Galileo, which orbited Jupiter from 1995 to 2003. The observations show another wild way that a moon can interact with the magnetic field of its planet. Jupiter’s radius is around 11 times that of Earth, but it is perhaps 20,000 times more magnetic. This generates an intense radiation environment around the planet. Typically, these waves around...
  • Jupiter's Icy Moon Europa Has a Really Weird Cold Spot

    09/07/2018 2:11:28 PM PDT · by BenLurkin · 18 replies
    Space.com ^ | September 7, 2018 12:19pm ET | Meghan Bartels,
    Just because Jupiter's moon Europa is coated in ice doesn't mean all that ice is the same temperature. And now, scientists have mapped the hot and cold spots on the moon's surface using data gathered from Earth, with accuracy down to 125 miles (200 kilometers). While most of the temperature variations they measured can be explained by sunlight's influence on the ice, there's one unusually cold spot that is stumping the scientists behind the new research. That spot, which falls on the moon's northern hemisphere, stood out in images taken at different times of the day, which surprised the scientists....
  • Europa Lander May Not Have to Dig Deep to Find Signs of Life

    07/23/2018 7:32:23 PM PDT · by Simon Green · 23 replies
    Space.com ^ | 07/23/18 | Mike Wall
    If signs of life exist on Jupiter's icy moon Europa, they might not be as hard to find as scientists had thought, a new study reports. The 1,900-mile-wide (3,100 kilometers) Europa harbors a huge ocean beneath its icy shell. What's more, astronomers think this water is in contact with the moon's rocky core, making a variety of complex and intriguing chemical reactions possible. Researchers therefore regard Europa as one of the solar system's best bets to harbor alien life. Europa is also a geologically active world, so samples of the buried ocean may routinely make it to the surface...
  • This May Be the Best Evidence Yet of a Water Plume on Jupiter's Moon Europa

    05/14/2018 10:23:16 AM PDT · by Simon Green · 16 replies
    Space.com ^ | 05/14/18 | Mike Wall,
    The case for a giant plume of water vapor wafting from Jupiter's potentially life-supporting moon Europa just got a lot stronger. NASA's Hubble Space Telescope has spotted tantalizing signs of such a plume multiple times over the past half decade, but those measurements were near the limits of the powerful instrument's sensitivity. Now, researchers report in a new study that NASA's Galileo Jupiter probe, which orbited the planet from 1995 to 2003, also detected a likely Europa plume, during a close flyby of the icy moon in 1997. The newly analyzed Galileo data provides "compelling independent evidence that there seems...
  • This Is The Highest Resolution Image Of Europa We Have … For Now

    02/11/2017 8:09:24 AM PST · by BenLurkin · 28 replies
    universe today ^ | 02/11/2017 | Bob King
    Stay away from Europa? No way. It’s just too fascinating a place with its jigsaw-puzzle ice sheets, crisscross valleys, miles of ice on top and a warm, salty ocean below. The movie was prescient — if you’re going to search for life elsewhere in the solar system, Europa’s one of the best candidates. While we’ve sent spacecraft to photograph and study the icy moon during orbital flybys, no lander has yet to touch the surface. That may change soon. In early 2016, in response to a congressional directive, NASA’s Planetary Science Division began a pre-Phase A study to assess the...
  • Juno Jupiter Probe's Final Engine Burn Delayed by Glitch

    10/18/2016 12:33:39 AM PDT · by blueplum · 4 replies
    Space.com ^ | 17 October 2016 3:21pm ET | Mike Wall, Senior Writer
    NASA's Juno Jupiter probe won't be settling into its final orbit around the giant planet this week after all. Juno was scheduled to fire its main engine for the final time during the probe's close Jupiter flyby on Wednesday (Oct. 19), in a maneuver that would reduce the time it takes the spacecraft to circle the gas giant from 53 Earth days down to 14 days. But the mission team decided to postpone the burn in order to investigate an issue with valves that are part of Juno's fuel-pressurization system, NASA officials said. "Telemetry indicates that two helium check valves...
  • NASA’s Hubble Spots Possible Water Plumes Erupting on Jupiter's Moon Europa

    09/26/2016 12:17:16 PM PDT · by C19fan · 24 replies
    NASA ^ | September 26, 2016 | Staff
    Astronomers using NASA's Hubble Space Telescope have imaged what may be water vapor plumes erupting off the surface of Jupiter's moon Europa. This finding bolsters other Hubble observations suggesting the icy moon erupts with high altitude water vapor plumes. The observation increases the possibility that missions to Europa may be able to sample Europa’s ocean without having to drill through miles of ice. “Europa’s ocean is considered to be one of the most promising places that could potentially harbor life in the solar system,” said Geoff Yoder, acting associate administrator for NASA’s Science Mission Directorate in Washington. “These plumes, if...
  • Astronomy Picture of the Day -- The Surface of Europa

    05/19/2016 10:17:59 AM PDT · by SunkenCiv · 11 replies
    NASA ^ | Thursday, May 19, 2016 | (see photo credit)
    Explanation: An enhanced-color view, this image covers a 350 by 750 kilometer swath across the surface of Jupiter's tantalizing moon Europa. The close-up combines high-resolution image data with lower resolution color data from observations made in 1998 by the Galileo spacecraft. Smooth ice plains, long fractures, and jumbled blocks of chaos terrain are thought to hide a deep ocean of salty liquid water beneath. Though the ice-covered alien ocean world is outside the Solar System's habitable zone, new studies show the potential chemistry driving its oxygen and hydrogen production, a key indicator of the energy available for life, could produce...
  • How Do We Terraform Jupiter’s Moons?

    04/22/2016 11:30:11 PM PDT · by BenLurkin · 39 replies
    Within the Jupiter system, there are 67 confirmed moons of varying size, shape and composition. In honor of Jupiter’s namesake, they are sometimes collectively referred to as the Jovians. Of these, the four largest – Io, Europa, Ganymede and Callisto – are known as the Galileans (in honor of their founder, Galileo Galilei). These four moons are among the largest in the Solar System, with Ganymede being the largest of them all, and even larger than the planet Mercury. In addition, three of these moons – Europa, Ganymede and Callisto – are all believed or known to have interior oceans...
  • Astronomy Picture of the Day -- Europa: Discover Life Under the Ice [April Fool!]

    04/01/2016 6:59:54 AM PDT · by SunkenCiv · 2 replies
    NASA ^ | Friday, April 01, 2016 | (see photo credit)
    Explanation: Looking for an interplanetary vacation destination? Consider a visit to Europa, one of the Solar System's most tantalizing moons. Ice-covered Europa follows an elliptical path in its 85 hour orbit around our ruling gas giant Jupiter. Heat generated from strong tidal flexing by Jupiter's gravity keeps Europa's salty subsurface ocean liquid all year round. That also means even in the absence of sunlight Europa has energy that could support simple life forms. Unfortunately, it is currently not possible to make reservations at restaurants on Europa, where you might enjoy a dish of the local extreme shrimp. But you can...
  • Astronomy Picture of the Day -- Moons and Jupiter

    03/04/2016 12:25:38 PM PST · by SunkenCiv · 4 replies
    NASA ^ | March 03, 2016 | (see photo credit)
    Explanation: Some of the Solar System's largest moons rose together on February 23. On that night, a twilight pairing of a waning gibbous Moon and Jupiter was captured in this sharp telescopic field of view. The composite of short and long exposures reveals the familiar face of our fair planet's own large natural satellite, along with a line up of the ruling gas giant's four Galilean moons. Left to right, the tiny pinpricks of light are Callisto, Io, Ganymede, [Jupiter], and Europa. Closer and brighter, our own natural satellite appears to loom large. But Callisto, Io, and Ganymede are actually...
  • We must stay in EU to unite against aggression, says David Cameron

    02/13/2016 12:14:32 AM PST · by Berlin_Freeper · 26 replies
    theguardian.com ^ | Friday 12 February | Mason, Perraudin, Oltermann
    Britain should stay in a reformed European Union so countries can stand together against the aggression of Russia, North Korea and Islamic State, David Cameron has said. At a dinner in Hamburg hosted by Angela Merkel, the German chancellor, the prime minister gave his strongest comments yet about what he sees as a need to stay in the EU for national security reasons.
  • German TV station adds Islamic crescent and star symbol to its logo!?! [Rape of Europa]

    01/18/2016 12:23:40 PM PST · by Jan_Sobieski · 32 replies
    Shoebat.com ^ | 1/18/2016 | Shoebat Foundation
    German Television station Tele5 has changed its logo to a German flag emblazoned with the Islamic star and crescent, just weeks after the New Year’s Eve Muslim migrant sex attacks in Cologne and Muslim terrorist attack in Istanbul. Tele5 justified the move on Twitter this afternoon, saying that it was a symbol "expressing our sympathy to the victims of yesterday's attack," on German tourists in Istanbul. The attack in Istanbul took the lives of 10 tourists, mostly Germans, in Sultanahmet square, near the Blue mosque and Hagia Sophia. According to Deputy Prime Minister Numan Kurtulmus, the suicide bomber who perpetrated...
  • The Rape of Europe [Warning from 2006]

    11/05/2015 11:43:42 AM PST · by Jan_Sobieski · 12 replies
    The Brussels Journal ^ | 10/25/2006 | Paul Belien
    The German author Henryk M. Broder recently told the Dutch newspaper De Volkskrant (12 October) that young Europeans who love freedom, better emigrate. Europe as we know it will no longer exist 20 years from now. Whilst sitting on a terrace in Berlin, Broder pointed to the other customers and the passers-by and said melancholically: "We are watching the world of yesterday." Europe is turning Muslim. As Broder is sixty years old he is not going to emigrate himself. "I am too old," he said. However, he urged young people to get out and "move to Australia or New Zealand....
  • Why the EU’s refugee crisis? ‘Lack of central authority’

    09/29/2015 2:44:14 AM PDT · by Olog-hai · 5 replies
    Associated Press ^ | Sep. 23, 2015 8:36 AM EDT | John-Thor Dahlburg
    The European Union has no border patrol. It’s one of the many ways in which the bloc lacks power, with its member countries jealously guarding their sovereign prerogative to enact their own laws about defense, police and coast guard. This vacuum of authority, and the failure of EU policy-makers to anticipate how events in faraway Libya or Syria might trigger the flood of refugees now swamping Europe, are some of the reasons the group of 28 European nations originally founded as a common market has failed to deal more firmly and effectively with what has mushroomed into a major humanitarian...
  • What About a Mission to Europa?

    07/27/2015 11:59:52 AM PDT · by BenLurkin · 23 replies
    universetoday.com ^ | on July 27, 2015 | Fraser Cain
    Jupiter’s moon Europa has the most water in the entire Solar System. If you took all the water on Earth, collected it into a big sphere, it would measure almost 1,400 kilometers across. Europa’s water would measure nearly 1,800 kilometers.All that water exists in a layer around Europa, encased in a layer of ice. ... According to the plan, a spacecraft will launch in the 2020s, carrying 9 instruments to Europa. Most will be familiar cameras, mass spectrometers, and the like, to study the surface of Europa to a high level of resolution. Over the course of 45 flybys, the...
  • Astronomy Picture of the Day -- Venus and Jupiter are Close

    07/02/2015 11:17:19 AM PDT · by SunkenCiv · 18 replies
    NASA ^ | July 02, 2015 | (see photo credit)
    Explanation: On June 30, Venus and Jupiter were close in western skies at dusk. Near the culmination of this year's gorgeous conjunction, the two bright evening planets are captured in the same telescopic field of view in this image taken after sunset from Bejing, China. As the two bright planets set together in the west, a nearly Full Moon rose above the horizon to the south and east. Imaged that night with the same telescope and camera, the rising Moon from the opposite part of the sky is compared with the planetary conjunction for scale in the digitally composited image....
  • NASA Gives ‘GO’ for Mission to Alien Ocean World at Jupiter Moon Europa

    06/19/2015 4:48:20 AM PDT · by BenLurkin · 11 replies
    universetoday.com ^ | Ken Kremer
    At long last NASA is heading back to Jupiter’s mysterious moon Europa and doing so in a big way – because scientists believe it harbors an alien ocean of water beneath an icy crust and therefore is “one of the most promising places in the solar system to search for signs of present-day life” beyond Earth. Top NASA officials have now formally and officially green lighted the Europa ocean world robotic mission and given it the “GO” to move from early conceptual studies into development of the interplanetary spacecraft and mission hardware, to search for the chemical constituents of life....