1、The Mars rover Curiosity, now 63 days into its two-year exploration of the red planet, has analyzed a football-sized rock that NASA scientists say has some surprisingly Earth-like qualities.Curiositys engineers on Earth put the drilling and sampling tools on the rovers robotic arm to full use this w
2、eek as they assessed the makeup of the pyramid-shaped rock. The sample is named Jake Matijevic, in honor of a senior engineer on the Curiosity team who passed away this summer. Co-investigator Edward Stolper of the California Institute of Technology says the football-size rock is similar to a kind o
3、f igneous, or volcanic rock found on Earth.The composition of Jake Matijevic is a very close match to highly crystalized or fractionated magmas that occur on particular places on earth, said Stolper.Stolper says it is difficult to conclude from this one rock whether it formed the same way such rocks
4、 formed on Earth. But he says further studies could answer that question.Scientists were pleased with the data they gathered from two new instruments on Curiosity - the Alpha Particle X-Ray Spectrometer and the Chemistry and Camera Instrument, called ChemCam, which shoots rock-busting laser pulses f
5、rom the top of the rovers mast.This image shows where NASAs Curiosity rover aimed two different instruments to study a rock known as Jake Matijevic. (NASA/JPL-Caltech/MSSS)NASA scientists say the information from the two instruments is just a preview of things to come. The rover also carries tools t
6、o gather and analyze soil samples. Actually, the first samples will be used to clean off a protective film of oil - possibly bearing traces of terrestrial dust - left on the instruments when they were assembled on Earth. Chris Roumeliotis, with NASAs Jet Propulsion Laboratory, says its rather like a
7、 Martian car-wash.“The decontamination activity is extremely important because we dont want our instruments spooked by any terrestrial contamination. And once we clean everything we will be up and running with full capability, said Roumeliotis.After the decontamination, the rover will be driven about 90 meters toward another rock in the Gale Crater area thats been selected as the first target for Curiositys drill.Over the rovers two-year mission, researchers will be studying whether this region of Mars ever had - or might still have - conditions that could support life.
