Mission complete: Nasa announces demise of Opportunity rover
WASHINGTON: During 14 years of intrepid exploration across Mars it advanced human knowledge by confirming that water once flowed on the red planet - but Nasa's Opportunity rover has analyzed its last soil sample.
The robot has been missing since the US space agency lost contact during a dust storm in June last year and was declared offi ally dead Wednesday, ending one of the most fruitful missions in the history of space exploration.
Unable to recharge its batteries, Opportunity left hundreds of messages from Earth unanswered over the months, and Nasa said it made its last attempt at contact Tuesday evening.
"I declare the Opportunity mission as complete," Thomas Zurbuchen, associate administrator of Nasa's Science Mission Directorate told a news conference at mission headquarters in Pasadena, California.
The community of researchers and engineers involved in the program were in mourning over the passing of the rover, known affectionately as Oppy.
"Spent the evening at JPL as the last ever commands were sent to the Opportunity rover on #Mars," Tanya Harrison, director of Martian research at Arizona State University, tweeted after a stint at Pasadena's Jet Propulsion Laboratory.
"There was silence. There were tears. There were hugs. There were memories and laughs shared. #ThankYouOppy #GoodnightOppy," she wre.
"Godspeed, Opportunity," tweeted Keri Bean, who had the "privilege" of sending the final message to the robot.
"Hail to the Queen of Mars," added Mike Seibert, Opportunity's former flight director and rover driver, in another tweet while Frank Hartman, who piled Oppy, told AFP he felt "greatly honored to have been a small part of it."
The program has had an extraordinary record of success: 28.1 miles (45.2 kilometers) traversed, more than the Soviet Union's Lunokhod 2 moon rover during the 1970s and more than the rover that US astronauts took to the moon on the Apollo 17 mission in 1972.
Opportunity sent back 217,594 images from Mars, all of which were made available on the internet.
"For the public the big change was that Mars became a dynamic place, and it was a place that you could explore every day," Emily Lakdawalla, an expert on space exploration and senior editor at The Planetary Society.
Opportunity landed on an immense pn, and spent half its life there, traversing flat expanses and once getting stuck in a sand dune for several weeks. It was there, using geological instruments, that it confirmed that liquid water was once present on Mars.
译文来源：三泰虎 http://www.santaihu.com/47044.html 译者：Jessica.Wu
Mukesh - 8 hours ago -Follow
Sad to know that the rover died in the storm. It made astounding discoveries on Mars, some of them are:
Atmospheric Dynamics details
Martian Dust De ls
Modern Water or Frost
Water Interacting with Hot Rock
An Ancient Hydrothermal Sy em
A Habitable Environment Long Ago
Ancient Acidic Lakes (blueberries)
Hope more will come soon from other missions.
ONE LINER Challenge - 8 hours ago -Follow
NASA SHOULD HAVE CKD IT OUT WITH ISRO ON HOW TO REVIVE-
Bhagavathy Pil - Shangli - 8 hours ago -Follow
There is no Rover or Opportunity in Mars, all filmed in NASA studio & Nevada Desert.
Ali Afzar - Mumbai - 6 hours ago -Follow
An emotional day... Opportunity made tremendous progress in our understanding of Mars. The rover was a lone crusader on the Red Planet. Opportunity will be missed.
Gem - 4 hours ago -Follow
Sad and Glad Moment for humanity. Sad because it died and Glad that it helped in knowing the Red Planet. RIP #Oppy Opportunity. We''ll Miss You!
Kumar Bakshi - 5 hours ago -Follow
Perfect ..make a soup of our oceans by dumoing plastic and killing all the marine life and than go to mars in search of water only to leave another trash name rover on its soil and call it success ..human kind i tell u
Pijush - 5 hours ago -Follow
why can't NASA explore the technique to revive dead rover. Being dead means discharged batteries. I think NASA can do something on this
Samuel - 3 hours ago -Follow
when humans will land, they will repair it. till then RIP.
Dilip Kumar - 4 hours ago -Follow
Miracles happened earlier so it may again and this rover will one day again send back signals to earth..... good luck......
Sanjoy Pandey - 6 hours ago -Follow
The data exchanged so far need to be properly analysed. .
Bharat Tonse - 6 hours ago -Follow
CONGRATS, AND THANK YOU NASA
Mukesh - 5 hours ago -Follow
Well...now we have InSight lander roaming around the surface of Mars continuing the discovery.
Rakesh - Delhi - 39 mins ago
Oppy has left a legacy and hope her descendants will hover again on Mars surface and hope an Indian IndoMars rover will fly to the Planet.
Pradeep - 1 hour ago -Follow
Amazing advances in space technology, getting loads of information from far distant space!
Anand KS - Bangalore, India - 1 hour ago -Follow
Good by Opportunity
allauddin--khiljee1 - Rawaldi - 1 hour ago -Follow
SYED ABDULMUQTADIR - Jeddah - 1 hour ago -Follow
Opportunity Rover dead but new chapters will be written by NASA.
Gundumani - 1 hour ago -Follow
Some bhakts will say, India did all these 5000 years ago.. Students of Biplab..
Arun Choudhary - 4 hours ago -Follow
ISRO is more active
Nation - Others - 7 hours ago -Follow
America has to con trate on Moon first for complete exploration not on Mars.Knowing nothing about Moon why it is con trating on Mars? Space Ponzy Scam