Monday, 15 August 2011
Sunday, 7 August 2011
Water on Mars: Nepalese scientist behind
Nepalese 21 years old, Lujendra Ojha, bachelor student at University of Arizona, USA were behind the epoch making discovery about the presence and measurement of water on Mars. The title of his publication is "Seasonal Flows on Warm Martian Slopes"
He has published his article on highest impact journal of science "SCIENCE", as a second author. At just the age of 21, he achieved a lot and made all of us proud. If opportunity is provided, Nepalese can prove their excellency in any field. Congrats to Lujendra Ojha and his parents.
Their article can be viewed at:
http://www.sciencemag.org/content/333/6043/740.full
Abstract of his article:
Water probably flowed across ancient Mars, but whether it ever exists as a liquid on the surface today remains debatable. Recurring slope lineae (RSL) are narrow (0.5 to 5 meters), relatively dark markings on steep (25° to 40°) slopes; repeat images from the Mars Reconnaissance Orbiter High Resolution Imaging Science Experiment show them to appear and incrementally grow during warm seasons and fade in cold seasons. They extend downslope from bedrock outcrops, often associated with small channels, and hundreds of them form in some rare locations. RSL appear and lengthen in the late southern spring and summer from 48°S to 32°S latitudes favoring equator-facing slopes, which are times and places with peak surface temperatures from ~250 to 300 kelvin. Liquid brines near the surface might explain this activity, but the exact mechanism and source of water are not understood.
To watch the movie of their findings:
Read more...
He has published his article on highest impact journal of science "SCIENCE", as a second author. At just the age of 21, he achieved a lot and made all of us proud. If opportunity is provided, Nepalese can prove their excellency in any field. Congrats to Lujendra Ojha and his parents.
Their article can be viewed at:
http://www.sciencemag.org/content/333/6043/740.full
Abstract of his article:
Water probably flowed across ancient Mars, but whether it ever exists as a liquid on the surface today remains debatable. Recurring slope lineae (RSL) are narrow (0.5 to 5 meters), relatively dark markings on steep (25° to 40°) slopes; repeat images from the Mars Reconnaissance Orbiter High Resolution Imaging Science Experiment show them to appear and incrementally grow during warm seasons and fade in cold seasons. They extend downslope from bedrock outcrops, often associated with small channels, and hundreds of them form in some rare locations. RSL appear and lengthen in the late southern spring and summer from 48°S to 32°S latitudes favoring equator-facing slopes, which are times and places with peak surface temperatures from ~250 to 300 kelvin. Liquid brines near the surface might explain this activity, but the exact mechanism and source of water are not understood.
To watch the movie of their findings:
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