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Topic: Opportunity rover

	The Best of Mars Opportunity Lander Images
		The panoramic camera aboard NASA's Mars Exploration Rover Opportunity acquired this panorama of the "Payson" outcrop on the western edge of "Erebus" Crater during Opportunity's sol 744 (Feb. 26, 2006).
		The rover is currently traveling down this "road" and observing the approximately 25-meter (82-foot) length of the outcrop prior to departing Erebus crater.
		The rim of the crater is approximately 10 meters (32 feet) from the rover.
	www.solarviews.com /eng/opportunitygallery.htm (1051 words)

	Opportunity (MER-A)
		The rover has a top speed of 5 cm per second, but the average speed over time on flat hard ground would be 1 cm/sec or less due to the hazard avoidance protocols.
		The rover will be compactly stowed in a tetrahedron shaped landing platform and encased in an aeroshell consisting of a heat shield and a backshell for launch, cruise, and atmospheric entry.
		Opportunity was launched on a heavy Delta II 7925H on 8 July 2003 at 03:18:15 UT (July 7, 11:18:15 p.m.
	www.solarviews.com /eng/opportunity.htm (1019 words)

	Opportunity rover - Wikipedia, the free encyclopedia
		The rover has continued to function effectively over ten times longer than NASA planners expected, allowing her to perform extensive geological analysis of Martian rocks and planetary surface features; as of 2006 her mission is ongoing.
		Opportunity was directed to proceed in a southerly direction to Erebus crater, a large, shallow, partially buried crater and a stopover on the way south towards "Victoria" crater, between October 2005 and March 2006.
		The rover was commanded to dig another trench on the vast plains of Meridiani Planum, on Sol 366, and observations continued until Sol 373 (February 10, 2005).
	en.wikipedia.org /wiki/Opportunity_rover (3082 words)

	BBC NEWS \| Science/Nature \| Opportunity rover lands on Mars (Site not responding. Last check: 2007-09-08)
		Opportunity landed on a smooth, flat plain, in the highest altitude landing ever attempted by Nasa.
		The rover's airbags have made distinctive imprints in the Martian soil, suggesting it may be fine-grained and multi-layered.
		He added that Opportunity could have landed in a crater and that the bedrock could be the rim of that crater.
	news.bbc.co.uk /1/hi/sci/tech/3427045.stm (593 words)

	Second Opportunity :: Astrobiology Magazine ::
		Initial Pancam images and spectral analysis performed by the rover's Mini-TES instrument indicate that the Endurance Crater outcrops are not composed of the same sulfate-rich material found in Eagle Crater.
		The rover will spend the next few weeks traversing the rim of the crater, collecting extensive sets of Pancam images and Mini-TES spectra from at least two additional vantage points, and perhaps examining a few interesting rocks it encounters along the way.
		The trench that Opportunity dug was in a region of sand ripples, but the rover didn't take the time to examine the ripples closely.
	www.astrobio.net /news/article963.html (1180 words)

	CNN.com - Opportunity made 'interplanetary hole-in-one' - Jan. 26, 2004
		The Mars rover Opportunity is sending fresh data, including new photographs taken on the vehicle's parachute trip to the planet's surface, to mission control.
		Enthusiastic scientists told reporters that the rover, which touched down in a small crater on the red planet, was in "excellent condition" and that its landing site was unique.
		Opportunity is a replica of Spirit but was programmed to land about 6,600 miles (10,620 kilometers) away on the opposite side of the planet, in an area known as the Meridiani Planum -- a smooth plain near Mars' equator.
	www.cnn.com /2004/TECH/space/01/25/mars.rovers/index.html (659 words)

	Mars Exploration Rover Opportunity Takes Advantage of Parking Spot to Perform Imaging Tricks - Planetary News \| The ...
		Although frustrating for those who prefer to use the rovers' mobility to roll to new places and new sites as often as possible, the forced stillness has given Opportunity's imaging team the time and power to acquire a uniquely deep data set on the landscape around the rover.
		Opportunity captured the images for this panorama from sols 652 to 663 (November 23 to December 5, 2005), while parked on the rim of Erebus crater.
		The rover has certainly acquired images of outcrops at different times of day before, but the imaging team rarely has the opportunity to pick and choose times of day for imaging.
	planetary.org /news/2006/0111_Mars_Exploration_Rover_Opportunity.html (1007 words)

	CNN.com - Scientist: Mars rock photo shows 'Holy Grail' - Jan. 27, 2004
		NASA's Mars rover Opportunity is sending a 'treasure trove' of fresh data.
		Opportunity, on its third day on Mars, sent the Earth-bound mission managers an 8,000-by-3,000-pixel, 180-degree image of the area in front of it -- an image that could be zoomed in tight enough to identify individual grains of the dust covering the surface.
		She pointed out that the scientists had thoroughly tested the rover's systems on Earth, but that the longest trial for the file system was nine days, half of the 18 days Spirit operated before running into the problem.
	www.cnn.com /2004/TECH/space/01/26/mars.rovers/index.html (676 words)

	NASA's Solar System Exploration: Missions: By Target: Mars: Present: Opportunity
		Opportunity found the strongest evidence yet that liquid water once existed on the surface of Mars.
		Both rovers are packed with sensors and cameras that have been revealing Mars in unprecedented detail from microscopic images of rocks to panoramic views of the rocky landscape.
		Opportunity traveled roughly 491 million km (305 million miles) on its journey to Mars.
	solarsystem.nasa.gov /missions/profile.cfm?MCode=MER_B (203 words)

	Cornell News: Science focuses on rover Opportunity
		Now a Cornell University-led Mars rover science team reports on the historic journey by the rover Opportunity, which is exploring a vast plain, Meridiani Planum, and concludes with this observation: "Liquid water was once present intermittently at the martian surface at Meridiani, and at times it saturated the subsurface.
		When Opportunity landed on the red planet last January, the robot geologist sent back images of its landing site that were unlike any of the other places where earlier lander probes and rovers had gone.
		Enough evidence was collected by Opportunity in the two months it spent examining Eagle crater that the science team felt confident enough to announce in early March that liquid water had flowed over the crater's rocks long ago, possibly for a long time.
	www.news.cornell.edu /releases/Dec04/Science.Mars.deb.html (758 words)

	Spaceflight Now \| Destination Mars \| Mission Status Center
		Opportunity awoke on sol 102 from its first "deep sleep." This set of activities was initiated to conserve the energy that is being used by the instrument arm's stuck-on heater switch.
		Rover planners commanded Opportunity to take a drive during the afternoon of sol 102 to the south, along the edge of the crater toward a dark rock in the vicinity.
		Opportunity sits about half a meter (1.6 feet) outside the edge of the crater with a positive pitch of 4.7 degrees, meaning the rover is slightly tilted with its head up.
	www.spaceflightnow.com /mars/mera/status.html (8962 words)

	CNN.com - An Opportunity to celebrate - Jan 25, 2005
		Only a few major glitches have plagued Opportunity, including a stuck heater, which was a glutton for power early in the mission but circumvented later by the addition of a "deep sleep" mode during a software update.
		The rover has also stumbled upon an iron meteorite, the first ever found on another world, which has galvanized rover and non-mission scientists alike to discuss its importance to their understanding of Mars.
		But Spirit and Opportunity are in their second lifetime extension since the close of their respective 90-day mission in April 2004, and the prospect of another extension seems good so long as they continue to send home good data.
	edition.cnn.com /2005/TECH/space/01/25/mars.opportunity/index.html (843 words)

	USATODAY.com - Opportunity rover closes in on Red Planet (Site not responding. Last check: 2007-09-08)
		What Opportunity might find at that landing site could be the geological mother lode at Mars that scientists seek — a type of mineral that cries out: "Water was here!" This site may well have been a suitable environment for microbial life.
		At Meridiani Planum, the Opportunity rover becomes a stranger in a strange land.
		Opportunity's targeted landing area is an ellipse about 53 miles (85 kilometers) long and 6.8 miles (11 kilometers) wide.
	www.usatoday.com /tech/news/2004-01-24-opportunity-nears_x.htm (1340 words)

	CNN.com - Mars rover to explore crater secrets - May 6, 2004
		The Mars rover Opportunity is perched above a 60-foot-deep crater that lead scientist Jim Garvin says could open up a window into the history of the red planet.
		Opportunity also passed by the impact site of the heat shield that protected it during its plunge through the Martian atmosphere.
		The second rover, Sprit, on the other side of the planet, will continue scouring Mars for geologic evidence the planet was once a wetter place capable of sustaining life.
	edition.cnn.com /2004/TECH/space/05/06/rover.crater/index.html (634 words)

	JPL News -- Opportunity Rover Begins Standing Up
		Other new images show how Opportunity's airbags left detailed impressions in the fine-textured soil as the spacecraft was rolling to a stop in the small crater where it now sits.
		After roll-off, soil near the lander will be the rover's first target for close-up examination with a microscope and two tools for detecting the composition of the target.
		Opportunity has already validated predictions about the landing site made on the basis of images and measurements taken by spacecraft orbiting Mars, said JPL's Dr. Matt Golombek, a member of the rover science team and co-chair of a steering committee that evaluated potential landing sites for the rovers.
	www.jpl.nasa.gov /releases/2004/43.cfm (650 words)

	Mars Exploration Rover Mission: Mars for Press
		Opportunity's dash to Mars began with liftoff at 11:18:15 p.m.
		Opportunity is scheduled to arrive at a site on Mars called Meridiani Planum on Jan. 25, 2004, Universal Time (evening of Jan. 24, Eastern and Pacific times), three weeks after Spirit lands in a giant crater about halfway around the planet.
		It built the rovers and manages the Mars Exploration Rover project for the NASA Office of Space Science, Washington, D.C. Information about the rovers and the scientific instruments they carry is available online from JPL at http://mars.jpl.nasa.gov/mer and from Cornell University, Ithaca, N.Y., at http://athena.cornell.edu.
	mars.jpl.nasa.gov /mer/newsroom/pressreleases/20030707a.html (396 words)

	Opportunity safely rolls onto surface of Mars - Return to the Red Planet - MSNBC.com
		The initial fl-and-white picture taken by Opportunity’s rear hazard camera showed the rover’s empty lander and a parallel set of tracks leading away from it, traced in the pebbly Martian dirt 128 million miles from Earth.
		Opportunity took 83 seconds to cover the 10 feet to the dark floor of the 72-foot-wide crater where it landed.
		The iron-rich hematite was detected by Opportunity’s mini-thermal emissions spectrometer, a heat-sensing instrument nicknamed Mini-TES.
	www.msnbc.msn.com /id/4042603 (803 words)

	TPS: Exploring Mars: The Mars Exploration Rovers (Site not responding. Last check: 2007-09-08)
		Each sol, Opportunity can drive to a new place, use the instruments on her robotic arm to explore rocks and soils, or use the instruments on her mast to study targets at a distance.
		Opportunity's landing site was such a remarkable place that the rover spent more than 50 sols studying the rocks and soils there.
		Opportunity made a picture-perfect landing, returning a color panorama of a weird and unexpected landscape including every Mars geologist's dream: a long outcrop of bedrock exposed in the wall of a crater.
	www.planetary.org /mars/mer-opportunity.html (916 words)

	Mars Exploration Rover Mission: Overview
		The Mars Exploration Rover mission is part of NASA's Mars Exploration Program, a long-term effort of robotic exploration of the red planet.
		Before landing, the goal for each rover was to drive up to 40 meters (about 44 yards) in a single day, for a total of up to one 1 kilometer (about three-quarters of a mile).
		Each rover is sort of the mechanical equivalent of a geologist walking the surface of Mars.
	origin.mars5.jpl.nasa.gov /overview (507 words)

	Mystery of Mars rover's 'carwash' rolls on - space - 23 December 2004 - New Scientist
		NASA's Mars rover Opportunity seems to have stumbled into something akin to a carwash that has left its solar panels much cleaner than those of its twin rover, Spirit.
		The rovers landed on Mars in January 2004 with solar cells capable of providing more than 900 watt-hours of electricity per day.
		Rover team leader Jim Erickson at NASA's Jet Propulsion Laboratory in Pasadena, California, told New Scientist that a process still not understood has repeatedly removed dust from the solar panels.
	www.newscientist.com /article.ns?id=dn6824 (508 words)

	Opportunity lander
		Images taken by a camera on the bottom of the lander during Opportunity's final descent show a crater about 150 meters (about 500 feet) across, about one kilometer from the landing site.
		The exposed Martian bedrock, near the lander, has a slab-like form which could have been created either by volcanic activity or by the action of water.
		It is too soon to say whether this bedrock is sedimentary or volcanic, but it is only about 10 metres away and the rover is fully equipped to find out.
	www.geocities.com /goarana667/opportunity3.htm (223 words)

	Mars Exploration Rover - Wikipedia, the free encyclopedia
		JPL succeeded on Thursday the 22nd in receiving a beep from the rover, indicating that it was in fault mode.
		At night the rovers are heated by eight radioisotope heater units (RHU) which each continuously generate 1 W of thermal energy from the decay of radioisotopes, along with electrical heaters that operate only when necessary.
		The rovers are also able to uplink information using the low-gain UHF antenna to other spacecraft orbiting Mars, utilizing the Mars Odyssey and Mars Global Surveyor orbiters as messengers who can pass along news to Earth for the rovers.
	en.wikipedia.org /wiki/Mars_Exploration_Rover (5621 words)

	ScienceDaily: Opportunity Rover Finds An Iron Meteorite On Mars
		Images and additional information about the rovers and their discoveries are available on the Internet at http://www.nasa.gov/vision/universe/solarsystem/mer_main.html and at http://marsrovers.jpl.nasa.gov.
		NASA Mars Rover Arrives At Dramatic Vista On Red Planet (September 27, 2006) -- NASA's Mars Rover Opportunity has arrived at the rim of a crater approximately five times wider than a previous stadium-sized one it studied for half a year.
		NASA Rover Opportunity Rolls Onto Martian Ground (February 2, 2004) -- NASA's Mars Exploration Rover Opportunity drove down a reinforced fabric ramp at the front of its lander platform and onto the soil of Mars' Meridiani Planum this...
	www.sciencedaily.com /releases/2005/02/050201072400.htm (1862 words)

	Mars Exploration Rover Mission: The Mission
		The Mars Exploration Rovers will act as robot geologists while they are on the surface of Mars.
		You can explore the various parts of the rover by clicking on the image to the left.
		In some senses, the rovers´ parts are similar to what any living creature would need to keep it "alive" and able to explore.
	marsrovers.jpl.nasa.gov /mission/spacecraft_surface_rover.html (108 words)

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