NASA extends operations of Sprit, Opportunity rovers on MarsNovember 14th, 2007 - 2:19 am ICT by admin
This extended mission and the associated science are dependent upon the continued productivity and operability of the rovers.
“We are extremely happy to be able to further the exploration of Mars. The rovers are amazing machines, and they continue to produce amazing scientific results operating far beyond their design life,” said Alan Stern, associate administrator for NASA’s Science Mission Directorate, Washington.
The twin rovers landed on Mars in January 2004, on missions originally planned to last 90 days.
In September, Opportunity began descending into Victoria Crater in Mars’ Meridiani Planum region. Approximately half a mile wide and 230 feet deep, it is the largest crater the rover has visited on the Red Planet.
On the other hand, Spirit climbed onto a volcanic plateau in a range of hills that were on the distant horizon from the landing site.
“After more than three-and-a-half years, Spirit and Opportunity are showing some signs of ageing, but they are in good health and capable of conducting great science,” said John Callas, rover project manager at NASA’s Jet Propulsion Laboratory, Pasadena, California.
The rovers each carry a suite of sophisticated instruments to examine the geology of Mars for information about past environmental conditions.
Opportunity has returned dramatic evidence that its area of Mars stayed wet for an extended period of time long ago, with conditions that could have been suitable for sustaining microbial life.
Elsewhere, Spirit has found evidence in the region it is exploring that water in some form has altered the mineral composition of some soils and rocks.
To date, Spirit has driven 4.51 miles and has returned more than 102,000 images. Opportunity has driven 7.19 miles and has returned more than 94,000 images.
Among the rovers’ many other accomplishments are analysis of a series of exposed rock layers recording how environmental conditions on Mars changed during the times when the layers were deposited and later modified, and formation and movement on dust devils on the Red Planet.
Both rovers have also found metallic meteorites on Mars. Opportunity discovered one rock with a composition similar to a meteorite that reached Earth from Mars. (ANI)
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