First global geologic map of Saturn's largest moon Titan completed

19 Novembre, 2019, 20:37 | Auteur: Therese Cote
  • SAR images showing examples of the main classes of geomorphologic units on Titan. Scale bars are 50 km with global area percentages covered by each major unit provided below. Image Lopes et al 2019

Using radar and infra-red data generated by the now-defunct Cassini probe, which completed a 20-year mission by crashing into Saturn in 2017, the scientists said they could fill in numerous gaps in mapping Titan, some 1.2 billion kilometres (800 million miles) from Earth. This is because, apart from it being the only moon known to have a dense atmosphere - it is denser than Earth's - it is also the only known body in space, other than our planet, where clear evidence of stable bodies of surface liquid has been found.

Scientists, for the first time, have unveiled the geological map of Saturn's moon Titan, which is widely considered as a potential candidate to spot alien life beyond earth. Labels point to several of the named surface features.

Lead author Lopes said that Titan possesses energetic methane established hydrologic cycle that has constituted an intricate geologic landscape rendering its exterior one of the most geologically varied in the solar system.

Epstein jail guards charged with falsifying records
Who was Jeffrey Epstein and what was he charged with? New York-born Epstein worked as a teacher before moving into finance. Federal prosecutors offered the guards a plea bargain, but the AP reported Friday that the officers declined the deal.

Hong Kong's night of mayhem
Earlier, protesters set fires on bridges leading to the university as they tried to stop police from advancing in on their campus. Some stripped down to their underwear, after earlier dousings from water cannon that witnesses said contained an irritant.

UK government, military covered up war crimes
The independent Service Prosecuting Authority decided not to prosecute any of the cases referred to it. None of the cases investigated by IHAT or Operation Northmoor resulted in a prosecution.

These observations demonstrate the extent to which Titan is shaped by its methane cycle - just like the Earth is shaped by the water cycle.

He further said that in spite of the varied materials, temperatures and gravity domain between Earth and Titan varied surface attributes are the same between the two worlds and can be translated as outcomes of similar geologic procedures. Their findings, which embody the relative age of Titan's geologic terrains, have been not too long ago printed within the journal Nature Astronomy.In accordance with the assertion, Lopes' staff used information from NASA's Cassini mission which operated between 2004 and 2017 and did greater than 120 flybys of the Mercury-size moon. Specifically, they used data from Cassini's radar imager to penetrate Titan's opaque atmosphere of nitrogen and methane. A thick layer of hazy methane clouds obscure the moon's surface and prevents an in-depth have a look at its necessary geological options. Rosaly says that the study is an example of combining datasets and instruments. The map indicates that Titan's geology depends strongly on latitude. "Although we did not have global coverage with synthetic aperture radar [SAR], we used data from other instruments and other modes from radar to correlate characteristics of the different terrain units so we could infer what the terrains are even in areas where we don't have SAR coverage". These hydrocarbons rain down on the surface, flow in streams and rivers, accumulate in lakes and seas and evaporate into the atmosphere.

Old data acquired by NASA's Cassini mission has given us our most complete look yet at the mysterious moon. "It's quite an astounding world!" The vehicle, formally dubbed a rotorcraft, would be the first NASA flying auto to carry out a science mission on one other world.

Conseillé:

  • Abbas vows to appeal U.S.  decision on settlements

    Abbas vows to appeal U.S. decision on settlements

    Pompeo, who made the announcement, said the administration was merely recognizing "the reality on the ground". At the time that editorial was written, there were fewer than 5,000 Israeli settlers in the West Bank.

    Impeachment hearings: witnesses to give firsthand accounts of Trump's Ukraine call

    The White House has instructed officials not to appear, and most have received congressional subpoenas to compel their testimony. Lt Col Vindman, an Iraq war veteran, appeared at the hearing wearing his Army uniform and medals.
    Apple déploie iOS 13.2.3 pour corriger plusieurs bugs

    Apple déploie iOS 13.2.3 pour corriger plusieurs bugs

    Elle corrige également un bug d'affichage des photos, liens et pièces jointes dans Messages avec la vue détaillée. Enfin, la mise à jour corrige un bug qui empêchait le téléchargement en arrière-plan.
  • 'Agreements on northern Syria not fulfilled by US, Russia'

    'Agreements on northern Syria not fulfilled by US, Russia'

    The safe zone in northern Syria consists of a 30 km safe zone along Turkey's border with Syria. Cavusoglu recalled Turkey's recent anti-terror operations in northern Syria.
    James Van Der Beek Opens Up About Wife's Miscarriage on Instagram

    James Van Der Beek Opens Up About Wife's Miscarriage on Instagram

    All you know is that it brings you closer together, it breaks you open, it opens up your heart, it deepens your appreciation. He thanked friends and co-workers for support, adding "Grieving AND counting our blessings today".
    Gronk is heading to Miami for Super Bowl 2020

    Gronk is heading to Miami for Super Bowl 2020

    Maybe we call an audible", says Football Gronk, before turning to the camera and adding, 'but just for this year". Sunday, which leaves a wide open afternoon of football games to watch before the Super Bowl LII rematch.
  • Mais qui est le candidat de Barack Obama ?

    Mais qui est le candidat de Barack Obama ?

    Des rumeurs voulaient que l'examen médical subi par Donald Trump ait été imprévu et déclenché par des douleurs à la poitrine, pouvant être le signe de problèmes cardiaques.
    Ajay Devgn: Don’t think Tanhaji and Baahubali should be compared

    Ajay Devgn: Don’t think Tanhaji and Baahubali should be compared

    The film will see Kajol reunite with Ajay onscreen nearly after a decade, where she will essay the role of Tanhaji's wife. The last time the couple was seen together on the silver screen was in 2008 for Ajay's home production, U Me Aur Hum .
    Aouchiche veut des garanties — PSG

    Aouchiche veut des garanties — PSG

    Milieu de terrain jugé comme très prometteur, le Parisien a brillé avec l'Equipe de France lors de la Coupe du monde U17. Au PSG de montrer qu'il a bien l'intention de s'appuyer pleinement sur son centre de formation.
  • MSNBC Interview With Rep Eric Swalwell Prompts #FartGate Debate

    MSNBC Interview With Rep Eric Swalwell Prompts #FartGate Debate

    Within the wake of the FartGate , Hardball additionally put out a tweet , pinning the blame of the noise on their customized mugs. Seriously, though ... it is important to take a break from the incessant bipartisansh*t in our nation's capital and laugh.
    Sir Paul McCartney teases Glastonbury appearance in cryptic tweet

    Sir Paul McCartney teases Glastonbury appearance in cryptic tweet

    Last month, Brian May ruled out the possibility of Queen playing at Glastonbury , saying, "There are lots of reasons". Sir Paul McCartney will headline the Saturday night of Glastonbury 2020, it has been confirmed.
    TikTok's Parent Company May Launch A Music Streaming Service Next Month

    TikTok's Parent Company May Launch A Music Streaming Service Next Month

    FT reports the unnamed music streamer may debut next month in India , Indonesia and Brazil before opening in the United States. The TikTok service now has around 1 billion users around the globe, with 80 million downloads in the United States alone.


Populaire

Université et entreprises prennent leurs distances avec le Prince Andrew — Scandale Epstein
Le palais de Buckingham a démenti à plusieurs reprises tout comportement inapproprié de la part du prince Andrew. Le financier américain Jeffrey Epstein, sur une photo rendue publique par la justice américaine en juillet 2019.

Fred Mella, soliste des Compagnons de la chanson, était passé par Cambrai
Il a donné un dernier concert en 2008, à L'Olympia, 25 ans après les adieux des Compagnons de la Chanson . Il est décédé peu après un autre membre des Compagnons , son frère René, disparu le 30 septembre à 93 ans.

Team using Keck telescope confirms liquid water on one of Jupiter’s moons
This NASA artist's concept shows the Galileo spacecraft flying by Jupiter's volcanic moon Io (L) and the enormous planet (R). But no one has been able to confirm the presence of water in these plumes by directly measuring the water molecule itself.

Florence Pugh Talks "Very Raw and Very Painful" Black Widow
Black Widow will see Natasha teaming up with Florence Pugh's Yelena Belova, the second Black Widow from the modern comics. Speaking of Florence, the Little Women star will be essaying the role of Nat's sister Yelena Belova in Black Widow .

Rival de Spotify, Amazon Music Unlimited est à 0,99€ pendant 4 mois
Cette offre spéciale est réservée aux nouveaux membres, et elle est valable pendant quelques semaines encore. Pour le moment, Amazon ne cite que les États-Unis, le Royaume-Uni et l'Allemagne.

Décès de Laure Killing, interprète d'Elisabeth Vallorta — Demain nous appartient
Selon son agent, elle serait décédée "des suites d'une longue maladie", comme l'ont indiqué confrères de TV Mag . Une nouvelle qui a profondément attristé les internautes, qui n'ont pas hésité à poster de nombreux messages.

Il survit en mettant le doigt dans l'oeil du croco
Dans un communiqué, les autorités du Queensland ont affirmé avoir euthanasié l'animal cette semaine. Il aurait finalement réussi à enjamber le reptile, à lui fermer les mâchoires et à le repousser.

Samoa declares state of emergency after measles deaths
They counted 716 measles cases reported, with almost 100 people still hospitalized including 15 in intensive care. Vaccination rates are low - around 30% - however officials are now mandating vaccines for all 200,000 residents.

Amazon’s ‘Lord of the Rings’ Series Gets Early Season 2 Renewal
The newly extended Season 1 hiatus will span until the end of the winter season in New Zealand , where the show is filmed. The show's cast includes "Bandersnatch" star Will Poulter , "Game of Thrones" alum Joseph Mawle and Markella Kavenagh .

Obama issues warning to 'revolutionary' Democrats
Mr Obama, who was in office from 2009 to 2017, said "ordinary Americans" didn't want to "completely tear down the system". Obama offered only one clear endorsement, though not exactly the one many Democratic donors in the room wanted to hear.