Brahmand NewsPrevious Article
Brahmand NewsNext Article
Headlines
  • Rajnath approves reform of Indian Army headquarters:-Indian Defence Minister Rajnath Singh has approved the first batch of reforms in the Army including relocation of 206 officers from the Army headquarters, setting up of a separate vigilance cell and forming an umbrella organisation to focus on human rights issues....
  • IAF always cautious and alert says Air Chief Marshal Dhanoa:-As tensions continue between India and Pakistan over the abrogation of special status to Jammu and Kashmir, Air Chief Marshal B S Dhanoa has said the Indian Air Force (IAF) is "always cautious and alert" to check any untoward aerial movement on the border....
  • Chandrayaan-2 placed in Lunar orbit, focus now on soft-landing:- India's Chandrayaan-2 mission, aimed at soft landing a rover in the unexplored south pole of the Moon, achieved a major milestone as the ISRO successfully injected the spacecraft into the lunar orbit on Tuesday. ...
  • Chandrayaan 2 successfully enters orbit around Moon:-In a major milestone for India's Moon mission, the Chandrayaan-2 spacecraft successfully entered the lunar orbit on Tuesday. Lunar Orbit Insertion (LOI) maneuver was completed successfully at 0902 hours as planned, using the onboard propulsion system, the Bengaluru headquartered space agency said in a statement....

Curiosity travels through ancient glaciers on Mars

Line Spacing+- AFont Size+- Print This Article

NASA's Mars rover Curiosity

WASHINGTON (PTI): NASA's rover Curiosity is currently traversing the Martian crater Gale that was covered with glaciers about 3,500 million years ago scientists say.

Gale was covered with ancient glaciers, mainly over its central mound. Very cold liquid water also flowed through its rivers and lakes on the lower-lying areas, forming landscapes similar to those which can be found in Iceland or Alaska.

The finding was reflected in an analysis of the images taken by the spacecraft orbiting the red planet.

Curiosity rover, which completed a Martian year - 687 Earth days - this week travels through an arid and reddish landscape that was home to glaciers in the past.

Ancient Mars held large quantities of water, yet its global hydro-geological cycles were very cold, so much so that they induced the presence of a giant ocean, partially ice-covered and rimmed by glaciers on the lower plains of the northern hemisphere.

Now, an international team of researchers has confirmed this global picture locally, on the Martian site where Curiosity is roving: Gale crater.

"This crater was covered by glaciers approximately 3,500 million years ago, which were particularly extensive on its central mound Aeolis Mons," the lead investigator of the study Alberto Fairen, from the Centro de Astrobiologia (INTA-CSIC) in Spain and Cornell University in the US said.

"However, at that time there were also rivers and lakes with very cold liquid water in the lower-lying areas within the crater," he said.

Fairen highlighted the fact that ancient Mars was capable of "maintaining large quantities of liquid water (an essential element for life) at the same time that giant ice sheets covered extensive regions of its surface."

To carry out the study, the team used images captured with the HiRISE and CTX cameras from NASA's Mars Reconnaissance Orbiter, together with the HRSC onboard the Mars Express probe managed by the European Space Agency (ESA).

Analyses of the photographs have shown the presence of concave basins, lobated structures, remains of moraines and fan-shaped deposits which point to the existence of ancient glaciers on Gale.

In fact they seem to be very similar to some glacial systems observed on present-day Earth.

The research appeared in the Science News and Information Service (SINC).

Tags:

Nasa  Space  Curiosity  Rover  Mars  
Line Spacing+- AFont Size+- Print Article

Other Related News

China congratulates India on Chandrayaan-2; Wants to work together for outer space exploration

China has congratulated India on the successful launch of the Chandrayaan-2 and expressed its desire to work with New Delhi for outer space exploration as both countries have stepped up their space programmes including plans to build their own space stations.

Upcoming Defence Exhibitions

BRAHMOS Missile Systems

Headlines

Brahmand World Defence Update 2019

Image Gallery