Wednesday, 24 October, 2018

Liquid water on Mars! Lake discovered under Martian ice cap

An artist's impression of the Mars Express spacecraft over a background based on an actual image of Mars taken by the spacecraft's high resolution stereo camera. A massive underground lake has been detected for the first time on Mars Radar has found liquid water on Mars, but don't expect anyone to drink it
Doris Mccormick | 27 July, 2018, 15:30

Assuming that this reservoir exists (scientists think it does, but we need more testing to be confident), it may be a long time before scientists can examine samples from this water.

A team of scientists announced today that they had found a large body of liquid water beneath the southern ice caps of Mars.

Between May 2012 and December 2015, the Mars Advanced Radar for Subsurface and Ionosphere Sounding (or "MARSIS" for short) surveyed the region of Mars known as the Planum Australe, a 200-kilometer area on the planet's southern polar plain, which is composed of water ice, Carbon dioxide ice, and admixed dust. As reported in Science, the researchers, led by Roberto Orosei from the Italian National Institute for Astrophysics, examined radar profiles collected between May 2012 and December 2015 and discovered the evidence of liquid water trapped below the ice.

The paper, authored by the Italian MARSIS team, outlines how a "bright spot" was detected in radar signals about 1 mile (about 1.5 kilometers) below the surface of the ice cap in the Planum Australe region.

In order to remain liquid in such cold conditions (the research team estimate between -10°C and -30° where it meets the ice above), the water likely has a great many salts dissolved in it. On top of that, the presence of salts on Mars made it ideal to keep any water liquid, even at freezing temperatures.

The presence of liquid water at the base of the polar ice caps has always been suspected; after all, from studies on Earth, it is well known that the melting point of water decreases under the pressure of an overlying glacier. "You can find bacteria in what is seen in Antarctica, so there may be a good possibility that what we found on Mars is a good environment for the preservation of microbial life", Pettinelli says.

Being able to access water sources could help humans survive on a future crewed mission to Earth's neighbouring planet. It's over 12 miles wide and is the first of its kind to be discovered on Mars, which had previously been thought to only contain ice.

Mars's southern polar ice cap
Mars’s southern polar ice cap

Billions of years ago, Mars was a much more Earth-like place where water pooled in seas, carved enormous canyons and bubbled from hot springs.

Mars was once a wet planet; it had rivers and lakes, like Earth.

On board the European Space Agency's (ESA) Mars Express Orbiter, the MARSIS is a radar instrument that inspects the surface of Mars and its immediate subsurface as well. It "then measures how the radio waves propagate and reflect back to the spacecraft".

Experts can determine things about the sub-surface features reflecting these radar pulses, gaining an element of insight into the Red Planet's hidden layers. These penetrate its surface but bounce back when they hit a boundary between different materials, such as ice and bedrock.

This is the first sign of a persistent water body on the Red Planet. It will be decades before astronauts can visit the surface of Mars, and likely much longer before we can drill a mile beneath the dusty surface. Over millions of years, Mars cooled and its water became locked in permafrost. "I see cells in it, but it's so briny that the cells-I can't get them to metabolize, " he said, referring to the chemical processes that all organisms undertake to survive. "Because of this, there is no reason to conclude that the presence of subsurface water on Mars is limited to a single location".

One of those instruments will be on Mars later this year. The latest findings reported by researchers at the Italian Space Agency suggest that a 20 kilometer-wide subglacial lake lies just 1.6 kilometers beneath the surface, near the south pole of Mars. Now, if this discovery pans out, it's clear that some large pockets of liquid water still exist on or near the Martian surface.

Yankees acquire JA Happ for Brandon Drury, Billy McKinney
The Yankees acquired Drury in a trade this spring to compete against rookie Miguel Andujar for the starting third-base job. Unless the Blue Jays were to deal someone like Solarte in a subsequent trade, Drury is somewhat redundant on this roster.


Xiaomi introduces budget-friendly Redmi 6
Measuring 176.15×87.4×7.99mm, the device comes equipped with a circular fingerprint sensor and an infrared sensor. As for the cameras, there is a combination of 12MP + 5MP cameras, the secondary one being used for depth sensing.


White House fixes Trump-Putin transcript error after key question omitted
The White House says the omission "was by no means deliberate" and that the transcript has been updated for presidential records. Senators on both sides of the aisle did praise the White House for announcing it was delaying Mr.


Recommended

  • Don’t miss blood moon on July 27

    Don’t miss blood moon on July 27

    The moon will begin to appear reddish around 18:24 GMT as it moves into the main part of the Earth's shadow . An opposition happens when Mars is the closest to Earth in its orbit , both on the same side of the Sun.
    Mark Zuckerberg just lost almost  $16 billion in one day

    Mark Zuckerberg just lost almost $16 billion in one day

    Facebook disrupted some business by putting in place new rules to get all political advertisers to verify their identities. The stock plunged 19 percent in early trading Thursday, eradicating well in excess of $100 billion in market value.
    Demi Lovato's friends asked EMTs to respond to overdose without sirens

    Demi Lovato's friends asked EMTs to respond to overdose without sirens

    The singer remains in a Los Angeles hospital, where her ex-boyfriend, actor Wilmer Valderrama visited her on Wednesday. The source added that Lovato is "human" and the high expectations she set for herself "got to be too much".
  • China withdraws approval for Facebook unit

    China withdraws approval for Facebook unit

    The company sells worldwide advertisements to Chinese businesses and the Chinese government. Facebook's plan for a new venture in China has ended before it even begun.
    Chelsea sign veteran goalkeeper on free transfer

    Chelsea sign veteran goalkeeper on free transfer

    Bringing in an English player, therefore, gives Chelsea the ability to sign an worldwide for another position on the pitch.
    'Tariffs Are the Greatest' Trump Tweets Before Juncker Meeting

    'Tariffs Are the Greatest' Trump Tweets Before Juncker Meeting

    Those affected economies have in turn targeted USA agricultural products, including soybeans, dairy, meat, produce and liquor. The aid is meant to serve as temporary boost to farmers as the United States and China negotiate over trade issues.
  • Man Utd boss Mourinho: Right decision to release Martial

    Man Utd boss Mourinho: Right decision to release Martial

    Apparently Spurs are demanding around £70m for the 29-year-old, while United value him - on account of his age - at £55m. Former Red Devil Wayne Rooney has issued a warning to Manchester United about selling young forward Anthony Martial .
    Oil jumps on Saudi Arabia shipping lane attack, WTI back over $70.00

    Oil jumps on Saudi Arabia shipping lane attack, WTI back over $70.00

    Yemen's Iran-aligned Houthis attacked two of Saudi Arabia's giant crude carriers off Yemen's coast on causing slight damage. Oil tankers from the Gulf pass through the Bab al-Mandab to enter the Red Sea as they head for Europe via the Suez Canal .
    Samsung Built A 'Unbreakable' Flexible Display

    Samsung Built A 'Unbreakable' Flexible Display

    This is quite different from what is now offered, where most displays have a glass film, which is usually what cracks on impact. Samsung Display has put its new supposedly unbreakable smartphone display panel through the paces, and the results are in.
  • Egyptian zoo busted painting donkeys to look like zebras

    Egyptian zoo busted painting donkeys to look like zebras

    Sarhani was visiting the International Garden municipal park in Cairo earlier this month when he came across the freaky exhibit. When a visited went to the cage of the "lion" at the zoo in Louhe, a city in Henan, they heard a loud bark.
    Fortnite Playground LTM v2 detailed: Here are the 5 major changes

    Fortnite Playground LTM v2 detailed: Here are the 5 major changes

    This allows players to use "ew team select options letting you and your squad set up team battles for practice and training". Can't see birthday challenges? Those additions will definitely help Fortnite players get in the birthday spirit.
    Conor McGregor avoids jail over melee at UFC media event

    Conor McGregor avoids jail over melee at UFC media event

    The ruling means that McGregor will not be handed a criminal record, nor will it restrict his ability to travel to the US. The UFC stripped him of its 155-pound championship belt in April because he had not fought in 17 months.

Priyanka Chopra and Nick Jonas are reportedly engaged Priyanka Chopra and Nick Jonas are reportedly engaged Priyanka and the American singer have been dating for more than two months and now reports suggest that the couple is engaged . Actor Priyanka Chopra and pop singer Nick Jonas are engaged after two months of dating, the U.S. media reported .

Lunar eclipse: Rare 'blood moon' will be visible in the United Kingdom tonight Lunar eclipse: Rare 'blood moon' will be visible in the United Kingdom  tonight The Moon will rise in a totally-eclipsed state and we will see about three quarters of the total phase of the eclipse. Lunar eclipses can occur only during a full moon, and this one is extra special because it's also the blood moon.

Love signs extension with Cavaliers Love signs extension with Cavaliers Former teammate LeBron James congratulated Love on the deal via Twitter , telling love that dinner in California will be on him. He appeared in 59 games last season, averaging 17.6 points on.458 shooting, 9.3 boards and 1.7 assists in 28.0 minutes a night.

Row over CNN reporter's White House ban Row over CNN reporter's White House ban President Trump has repeatedly attacked CNN as "fake news" and has refused to take questions from CNN reporters. Fox News' chief political anchor Bret Baier defended Collins on-air and in a series of tweets Wednesday.

Trump 'very concerned' Russians will meddle to help Dems Trump 'very concerned' Russians will meddle to help Dems The president wavers often on whether or not Russian Federation is trying to interfere with USA politics. I think we should be absolutely prepared to assume that they will try to interfere in all 50 states.

Mars to come closest to Earth in 15 years next month Mars to come closest to Earth in 15 years next month The best viewing of the planet will coincide with the lunar eclipse on Friday, July 27. When Mars and Earth are close to each other, Mars appears very bright in the sky.

Turkish MPs approve 'anti-terror' law to replace state of emergency Turkish MPs approve 'anti-terror' law to replace state of emergency Erdogan pledged during the campaign to exercise greater control over monetary policy, sending the lira to fresh lows. Turkey's central bank has been hiking rates sharply in recent months in an effort to stem its sliding currency.

Yankees get Britton from O's for trio of minor league arms Yankees get Britton from O's for trio of minor league arms However, Britton has had some health issues in recent seasons that have kept him off the field for extended periods of time. The postponement also ruined a promising start by David Price , whose night on the mound consisted of a 1-2-3 first inning.

North Korea still making nuclear material: Pompeo North Korea still making nuclear material: Pompeo The treaty was signed by the commander of North Korea's army, the American commander of the U.N. Pompeo said Wednesday that the "primary systems" that have threatened the USA still existed.

Dimitar Berbatov tips Manchester United to win the Premier League Dimitar Berbatov tips Manchester United to win the Premier League Gunners fans will get their first glimpses of new signing Sokratis and Lucas Torreira , who both joined the club this summer. We have to be this angry, aggressive, greedy team full of desire that wants to win each game.

Kevin Durant: LeBron James to the Lakers a 'Perfect Move' Kevin Durant: LeBron James to the Lakers a 'Perfect Move' Ibrahimovic believes his hand-eye coordination means he could pick up basketball pretty quickly, adding: "I did a lot of sport". I thought it was the ideal decision, flawless move, did everything he was supposed to do in Cleveland.

Germany star Mesut Ozil lashes DFB president and quits worldwide team Germany star Mesut Ozil lashes DFB president and quits worldwide  team Hector Bellerin has praised Arsenal team-mate Mesut Ozil for speaking out about the issues that prompted his worldwide retirement. Ozil was only 29, but he cited racism and even lashed out at the German football federation president.

Aaron Ramsey Provides Update On His Contract Extension Talks Aaron Ramsey Provides Update On His Contract Extension Talks Goalkeeper Petr Cech added: "Obviously we would like to keep all the best players with us. It's going to be a good season for me and the club".

Details emerge about what happened before and after Demi Lovato's apparent overdose Lovato received her (permanent) lion ink in April 2017 from famed celebrity tattoo artist Bang Bang . Lovato has openly shared her obstacles with fans throughout her recovery.

Thunderstorm warning in the Anglia region on Thursday Thunderstorm warning in the Anglia region on Thursday The level 3 warning, one behind a national emergency, has been issued with temperatures set to be in the high 20s this week. One nurse was admitted to A&E with dehydration after working three 12-hours shifts in a row during the heatwave.