Discover Yahoo! With Your Friends

Explore news, videos, and much more based on what your friends are reading and watching. Publish your own activity and retain full control.

To get started, first

YOUR FRIENDS' ACTIVITY

    Flame Dances Aboard Space Station

    Click here to listen to this podcast

    Starting a fire on the International Space Station might not sound like such a good idea.

    But that's just what researchers have been doing since 2009—albeit with very small flames in controlled conditions. Working remotely from a NASA center in Cleveland, they ignite small droplets of liquid fuel in a combustion chamber on the space station.

    The three-year-old project is called the Flame Extinguishment Experiment, or FLEX. A second round of experiments just began in January. And a predecessor to FLEX flew on several space shuttle missions in the 1990s.

    Why all the interest in space flames? Well, fire in microgravity is a curious creature, and researchers would like to have a better understanding of how it behaves. The buoyant forces that cause hot air to rise and cold air to sink don't really work in the absence of gravity. And the shape of the flame itself is different in space. When a droplet of fuel ignites, the flame surrounds it as a sphere about the size of an olive.

    The results of the experiments could help improve fire-fighting technology in space. Which, I think we can agree, is a good idea indeed.—John Matson

    [The above text is a transcript of this podcast] 

    Follow Scientific American on Twitter @SciAm and @SciamBlogs. Visit ScientificAmerican.com for the latest in science, health and technology news.
    © 2012 ScientificAmerican.com. All rights reserved.

     

    There are no comments yet

    [ [ [['Connery is an experienced stuntman', 2]], 'http://yhoo.it/KeQd0p', '[Slideshow: See photos taken on the way down]', ' ', '630', ' ', ' ', ], [ [['Connery is an experienced stuntman', 7]], ' http://yhoo.it/KpUoHO', '[Slideshow: Death-defying daredevils]', ' ', '630', ' ', ' ', ], [ [['know that we have confidence in', 3]], 'http://yhoo.it/LqYjAX ', '[Related: The Secret Service guide to Cartagena]', ' ', '630', ' ', ' ', ], [ [['We picked up this other dog and', 5]], 'http://yhoo.it/JUSxvi', '[Related: 8 common dog fears, how to calm them]', ' ', '630', ' ', ' ', ], [ [['accused of running a fake hepatitis B', 5]], 'http://bit.ly/JnoJYN', '[Related: Did WH share raid details with filmmakers?]', ' ', '630', ' ', ' ', ], [ [['accused of running a fake hepatitis B', 3]], 'http://bit.ly/KoKiqJ', '[Factbox: AQAP, al-Qaeda in Yemen]', ' ', '630', ' ', ' ', ], [ [['have my contacts on or glasses', 3]], 'http://abcn.ws/KTE5AZ', '[Related: Should the murder charge be dropped?]', ' ', '630', ' ', ' ', ], [ [['have made this nation great as Sarah Palin', 5]], 'http://yhoo.it/JD7nlD', '[Related: Bristol Palin reality show debuts June 19]', ' ', '630', ' ', ' ', ], [ [['have made this nation great as Sarah Palin', 1]], 'http://bit.ly/JRPFRO', '[Related: McCain adviser who vetted Palin weighs in on VP race]', ' ', '630', ' ', ' ', ], [ [['A JetBlue flight from New York to Las Vegas', 3]], 'http://yhoo.it/GV9zpj', '[Related: View photos of the JetBlue plane in Amarillo]', ' ', '630', ' ', ' ', ], [ [['the 28-year-old neighborhood watchman who shot and killed', 15]], 'http://news.yahoo.com/photos/white-house-stays-out-of-teen-s-killing-slideshow/', 'Click image to see more photos', 'http://l.yimg.com/cv/ip/ap/default/120411/martinzimmermen.jpg', '630', ' ', 'AP', ], [ [['Titanic', 7]], 'http://news.yahoo.com/titanic-anniversary/', ' ', 'http://l.yimg.com/a/p/us/news/editorial/b/4e/b4e5ad9f00b5dfeeec2226d53e173569.jpeg', '550', ' ', ' ', ], [ [['He was in shock and still strapped to his seat', 6]], 'http://news.yahoo.com/photos/navy-jet-crashes-in-virginia-slideshow/', 'Click image to see more photos', 'http://l.yimg.com/cv/ip/ap/default/120406/jet_ap.jpg', '630', ' ', 'AP', ], [ [['xxxxxxxxxxxx', 11]], 'http://news.yahoo.com/photos/russian-grannies-win-bid-to-sing-at-eurovision-1331223625-slideshow/', 'Click image to see more photos', 'http://l.yimg.com/a/p/us/news/editorial/1/56/156d92f2760dcd3e75bcd649a8b85fcf.jpeg', '500', ' ', 'AP', ] ]
    [ [ [['did not go as far his colleague', 8]], '29438204', '0' ], [ [[' the 28-year-old neighborhood watchman who shot and killed', 4]], '28924649', '0' ], [ [['because I know God protects me', 14], ['Brian Snow was at a nearby credit union', 5]], '28811216', '0' ], [ [['The state news agency RIA-Novosti quoted Rosaviatsiya', 6]], '28805461', '0' ], [ [['measure all but certain to fail in the face of bipartisan', 4]], '28771014', '0' ], [ [['matter what you do in this case', 5]], '28759848', '0' ], [ [['presume laws are constitutional', 7]], '28747556', '0' ], [ [['has destroyed 15 to 25 houses', 7]], '28744868', '0' ], [ [['short answer is yes', 7]], '28746030', '0' ], [ [['opportunity to tell the real story', 7]], '28731764', '0' ], [ [['entirely respectable way to put off the searing constitutional controversy', 7]], '28723797', '0' ], [ [['point of my campaign is that big ideas matter', 9]], '28712293', '0' ], [ [['As the standoff dragged into a second day', 7]], '28687424', '0' ], [ [['French police stepped up the search', 17]], '28667224', '0' ], [ [['Seeking to elevate his candidacy back to a general', 8]], '28660934', '0' ], [ [['The tragic story of Trayvon Martin', 4]], '28647343', '0' ], [ [['Karzai will get a chance soon to express', 8]], '28630306', '0' ], [ [['powerful storms stretching', 8]], '28493546', '0' ], [ [['basic norm that death is private', 6]], '28413590', '0' ], [ [['songwriter also saw a surge in sales for her debut album', 6]], '28413590', '1', 'Watch music videos from Whitney Houston ', 'on Yahoo! Music', 'http://music.yahoo.com' ], [ [['keyword', 99999999999999999999999]], 'videoID', '1', 'overwrite-pre-description', 'overwrite-link-string', 'overwrite-link-url' ] ]
    Loading...