Thanks to Mastcam, Nasa finds more signs of Mars water
Tuesday 19 March 2013
More signs of past water on Mars have been uncovered by the American space agency Nasa's Curiosity rover.
Powder drilled from a Martian rock last week revealed evidence of drinkable water and conditions favourable to life.
Now instruments on the rover have found more water-bearing minerals in the area around the rock.
Curiosity is exploring a region within Gale Crater, near the Martian equator, called Yellowknife Bay.
Scientists believe that billions of years ago water poured down the rim of the crater and formed streams that might have been up to three feet deep.
The new discoveries were made using the infrared imaging capability of Curiosity's mast camera, and an instrument that shoots neutron particles into the ground to probe for hydrogen.
Differences in brightness between near-infrared wavelengths of light can indicate the presence of some hydrated minerals that have been altered by water.
"With Mastcam, we see elevated hydration signals in the narrow veins that cut many of the rocks in this area," said Dr Melissa Rice, from the California Institute of Technology in Pasadena. "These bright veins contain hydrated minerals that are different from the clay minerals in the surrounding rock matrix."
The Russian-made Dynamic Albedo of Neutrons (DAN) instrument detected hydrogen in water molecules bound into minerals in the soil beneath the rover.
Yellowknife Bay contained more water than other areas previously visited by Curiosity, the results showed.
"More water is detected at Yellowknife Bay than earlier on the route," said DAN deputy principal investigator Dr Maxim Litvak, from the Space Research Institute in Moscow. "Even within Yellowknife Bay, we see significant variation."
The findings were presented at the Lunar and Planetary Science Conference in The Woodlands, Texas.
- 2 Rarest Beanie Baby of them all could be sold for £62,500 on eBay
- 3 Professional big game hunter Ian Gibson crushed to death by elephant during hunt
- 4 Farmer told to tear down mock-Tudor castle after hiding construction behind hay bales
Migrants crossing the Mediterranean: Pope Francis joins calls for EU action on boat refugees
Yemen crisis: Meet the child soldiers recruited by the Shia Houthi rebels who have forsaken books for Kalashnikovs
Alan Rickman admits editing 'terrible' script with friends in Pizza Hut behind backs of writers on Robin Hood: Prince of Thieves
Rarest Beanie Baby of them all could be sold for £62,500 on eBay
Isis in Afghanistan: Group claims responsibility for Jalalabad suicide bombing that killed 35
If I’m being racially abused I don’t need a stranger with a saviour complex to rescue me
The only black face in the Ukip manifesto is on the page about overseas aid
Ukip is the only main political party to not address LGBT rights in its manifesto
Food banks: One million Britons will soon be using them, according to Trussell Trust
Religion isn't growing, it is becoming vigorous in its demise, says philosopher AC Grayling
BBC election debate: The one photo that summed up the whole 90-minute leaders debate
£18000 - £23000 per annum: Recruitment Genius: They work with major vehicle ma...
£16500 per annum: Recruitment Genius: A Chiropractic Assistant is needed in a ...
£18000 - £26000 per annum: Recruitment Genius: They work with major vehicle ma...
£28000 - £30000 per annum: Recruitment Genius: This company provides coaching ...