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'Curiosity' rover confirms Mars air mostly CO2

Mars air mostly CO2, rover finds

The Curiosity rover has tasted Mars' air: It's made mostly of carbon dioxide with hints of other gases. The measurements closely match what the twin Viking landers detected in the late 1970s and what scientists have gleaned from Martian meteorites. Mars' atmosphere is overwhelmingly dominated by carbon dioxide, unlike Earth's air, which is a mix of nitrogen and oxygen. There was a small surprise: Viking found nitrogen to be the second most abundant gas in the Martian air, but Curiosity's measurements revealed a nearly equal abundance of nitrogen and argon, a stable noble gas. Mission scientists suspect it might have to do with the different tools used.

U.S. heat wave stuck in reverse

The sweltering weather in the Northeast has surprised meteorologists: It's moving backward across America, which rarely happens. U.S. weather systems normally move west to east. The western Atlantic high pressure system behind the hot weather started moving east to west last week and by Tuesday was centered over lower Michigan, the National Weather Service said. Forecasters say the high pressure is about to return eastward, extending the Northeast's heat wave a day or two. Thursday the heat index, which factors in humidity, hit 106 degrees in Washington, Baltimore and Philadelphia.

Find may be Civil War cannonball

Atlanta police say a construction crew on Thursday unearthed what appears to be a cannonball near Centennial Olympic Park. Police spokesman John Chafee says bomb technicians said the artifact may be from the Civil War era, but it has not yet been examined by an expert. When federal troops besieged Atlanta in 1864, they fired thousands of cannon shells into the downtown area that now includes the park.

Associated Press

'Curiosity' rover confirms Mars air mostly CO2 07/18/13 [Last modified: Thursday, July 18, 2013 10:32pm]
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  1. Jones: Bucs need success to get national respect

    Bucs

    Tampa Bay Times columnist Tom Jones offers up his Two Cents on the world of sports.

    No respect

    Tampa Bay Buccaneers head coach Dirk Koetter walks the field during the second day of mandatory minicamp at One Buccaneer Place in Tampa, Fla., on Wednesday, June 14, 2017. LOREN ELLIOTT   |   Times
  2. Hopes fade after landslide destroys Chinese village (w/video)

    World

    Crews searching through the night in the rubble left by a landslide that buried a mountain village under tons of soil and rocks in southwestern China found 15 bodies, but more than 110 more people remained missing.

    Vehicles and people line a road leading to the site of a landslide in Xinmo village in Mao County on Saturday in southwestern China’s Sichuan Province. More than 100 people remained missing after the village was buried under tons of rocks and soil.
  3. Rookie Jake Faria dissatisfied with performance in Rays' loss to Orioles

    The Heater

    ST. PETERSBURG — The rookie pitcher walked to his locker Saturday after tossing the fourth quality start in as many tries to begin his career. He held the potent Orioles bats to three runs and for six innings gave his team a chance to win.

    Orioles third baseman Manny Machado tags out the Rays’ Mallex Smith at third after a rundown in the first inning.
  4. Thousands converge in two St. Pete locations celebrating LGBT rights

    Human Interest

    ST. PETERSBURG — Tom Rockhill didn't know what to expect Saturday, but by noon people were knocking on the door of his bar Right Around the Corner in Grand Central.

    (From left to right) Emma Chalut 18, gets a rainbow sticker on her cheek from her sister Ellie, 15 both of Jacksonville before the annual St. Pete Pride parade in downtown St. Petersburg on Saturday. This year the route was changed from the Grand Central and Kenwood area to Bayshore Drive.
[EVE EDELHEIT   |   Times]
  5. Retired Florida Supreme Court Justice Parker Lee McDonald dies

    TALLAHASSEE — A former Florida Supreme Court justice, who wrote a decision that prevented lawyers from excluding jurors because of their race, has died.

    Former Florida Supreme Court Justice Parker Lee McDonald died Saturday, the court said in a statement. He was 93.