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செவ்வாய் கிரகத்தில் மிகப்பெரிய ஆறு கண்டுபிடிப்பு

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செவ்வாய் கிரகத்தில் மிகப்பெரிய ஆறு இருப்பதை விஞ்ஞானிகள் கண்டுபிடித்துள்ளனர்.

 

1500 கி.மீ., நீளமும், 7 கி.மீ., அகலமும் கொண்ட அந்த ஆறு, செவ்வாய் கிரகத்திற்கு ஊடாக செல்கிறது. செவ்வாய் கிரகத்தில் ஆறு கண்டுபிடிக்கப்பட்டிருப்பதையடுத்து, அங்கு மனிதர்கள் வாழ்வதற்கான சாத்தியக்கூறுகள் குறித்த ஆய்வு சூடுபிடித்துள்ளது.

 

http://tamil.yahoo.com/%E0%AE%9A-%E0%AE%B5%E0%AF%8D%E0%AE%B5-%E0%AE%AF%E0%AF%8D-%E0%AE%95-%E0%AE%B0%E0%AE%95-%E0%AF%8D-%E0%AE%B2%E0%AF%8D-%E0%AE%AE-090400649.html

  • தொடங்கியவர்

Once a river ran across Mars, say astronomers

 

The new Mars Express images show a region of Reull Vallis at a point where the channel is almost 7 km wide and 300 m deep. The sides of Reull Vallis are particularly sharp and steep, with parallel longitudinal features covering the floor of the channel itself.

 

These structures are believed to be caused by the passage of loose debris and ice during the "Amazonian" period - which continues to this day - due to glacial flow along the channel.

 

The structures were formed long after it was originally carved by liquid water during the Hesperian period, which is believed to have ended between 3.5 billion and 1.8 billion years ago.

 

http://www.hindustantimes.com/HTNext/LifeAndUniverse/Once-a-river-ran-across-Mars-say-astronomers/Article1-992787.aspx

 

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