您现在的位置是:百科 >>正文
【】
百科24人已围观
简介NASA's Curiosity rover spotted a strange rock on Mars, so of course, it shot it with a laser.The int ...
NASA's Curiosity rover spotted a strange rock on Mars, so of course, it shot it with a laser.
The intrepid, car-sized robot found an egg-shaped, golf ball-sized shiny rock that looked unlike any other rocks around it on Oct. 27.
NASA Scientists controlling the rover suspected that the odd rock is an iron meteorite that found its way to the Martian surface.
SEE ALSO:History's most spectacular Mars mission failsSo to confirm their suspicions, the researchers had Curiosity fire its laser at the meteorite.
The laser instrument (called ChemCam) has a specific scientific purpose. The instrument can decipher the chemical makeup of target rocks by gathering data on the types of light the rocks emit when hit with the laser beam.
According to Curiosity's chemical analysis, the rock discovered last week is made of nickel and iron. In addition, Curiosity also found an iron-nickel-phosphide mineral that is relatively common in these kinds of meteorites, but rare in other rocks, according to NASA.
A close-up of the Egg Rock meteorite showing the grid of white points caused by the blasts from Curiosity's laser.Credit: NASA/JPL-CaltechThese metal meteorites are also thought to be leftovers from the cores of asteroids floating around out in the solar system.
"Iron meteorites provide records of many different asteroids that broke up, with fragments of their cores ending up on Earth and on Mars," Curiosity team member Horton Newsom said in a statement.
"Mars may have sampled a different population of asteroids than Earth has."
This isn't the first meteorite a NASA rover on Mars has spotted.
NASA's Opportunity rover -- which is still roaming the surface of Mars -- found another iron-nickel meteorite on the planet's surface in 2009. That meteorite, known as the Block Island meteorite, is 2-feet-long, but Opportunity also found another, smaller space rock on the red planet in 2004.
The Block Island meteorite seen by the Opportunity rover.Credit: NASA/JPL-Caltech/Cornell UniversityScientists aren't sure when Curiosity's meteorite (named Egg Rock) fell to the Martian surface, but the rover's laser may help them figure it out.
NASA will use the data collected by the ChemCam to figure out if the chemical composition in the interior of the meteorite is different from its exterior, possibly giving them clues as to how long the rock has been on eroding on the planet's surface.
The meteorite was found on lower Mount Sharp, the part of the Gale Crater that Curiosity is currently exploring. Scientists hope to use the rover's remaining lifespan to learn more about the past environment on Mars millions of years ago, giving them a deeper understanding of if and when the planet was habitable for microbial life.
The rover has been investigating the surface of Mars since its landing in 2012.
Tags:
转载:欢迎各位朋友分享到网络,但转载请说明文章出处“夫榮妻貴網”。http://www.new.maomao321.com/news/20c7399906.html
相关文章
Wikipedia co
百科The group behind a growing list of celebrity social media breaches has struck again, this time takin ...
【百科】
阅读更多Report exposes which Aussie suburbs are the most charitable
百科Charitable giving is for everyone, but it's fair to wonder whether the top end of town is donating t ...
【百科】
阅读更多Start making 'Fallout 4' content now, then play it on consoles in June
百科Bethesda Softworks' long-promised plan to let amateur programmers create their own Fallout 4content ...
【百科】
阅读更多
热门文章
- Give your kitchen sponge a rest on this adorable bed
- Sleek smart clasp gives your analog watch a brain
- MashReads Podcast: Why you need to reread 'The Little Prince'
- Report exposes which Aussie suburbs are the most charitable
- You will love/hate Cards Against Humanity's new fortune cookies
- Scientists scrambling to track Arctic sea ice after key satellite sensor dies
最新文章
One of the most controversial power struggles in media comes to a close
'The Sun' is getting slammed on Twitter over its front page
Shakespeare is still reliable with the ladies, says online dating study
Stevie Wonder on Prince: 'It's a heartbreak to lose a member of that army of love'
Singapore rolls out video
People are throwing random stuff in bathtubs for 'Lush bath bomb' meme