NASA's Mars rover zeroes in on August landing (Update)

Jun 11, 2012 by Kerry Sheridan
This artist concept shows NASA's Mars Science Laboratory Curiosity rover in 2011. NASA's Mars rover, nicknamed Curiosity, is zeroing in on its August landing on the Red Planet and aims to touch down closer than expected to its mountain target, the US space agency said Monday.

NASA's Mars rover, nicknamed Curiosity, is zeroing in on its August landing on the Red Planet and aims to touch down closer than expected to its mountain target, the US space agency said Monday.

With a mission to use its roving toolkit to drill for signs that microbial life may have once existed on Mars, the rover is now set to land about four miles (6.5 kilometers) closer to the mountain than initially planned.

The car-sized rover, which NASA scientists have described as a 2.5-billion-dollar dream machine, launched from Florida in November 2011, and aims to land in Mars' Gale Crater at 0531 GMT on August 6.

"We're trimming the distance we'll have to drive after landing by almost half," said Pete Theisinger, Mars Science Laboratory project manager at NASA's Jet Propulsion Laboratory in Pasadena, California.

"That could get us to the mountain months earlier," he said, adding possibly as many as four months earlier than planned.

However, the narrower landing ellipse -- now four miles wide by 12 miles long instead of 12 miles wide and 16 miles long --- also brings the vehicle closer to the potential danger of coming down on a slope of Mount Sharp instead of a flat surface in the Gale Crater.

The six-wheeled rover will be lowered onto Mars with the help of a rocket-powered sky crane, and is carrying a sophisticated toolkit for rock sample analysis to support its two-year (one Martian year) mission.

Lab analysis has shown that one of its drills may contaminate Mars rock samples with bits of Teflon, a problem that was discovered shortly before launch, NASA said.

"We are getting a greater understanding of that contamination issue. The testing so far continues to give us reasonable confidence that we will be able to meet all mission success criteria for the use of the drill," said Theisinger.

Mars Science Laboratory project scientist John Grotzinger told reporters that since this is the first time a Mars rover has carried a drill, scientists are learning from the experience.

"We don't have enough information yet to really know how serious the problem is," he said, adding, "we see so many potential ways to work around this that we could use."

Three other orbiters -- already circling the Red Planet -- are being positioned to be overhead when the rover approaches Mars so they can relay communications back to Earth.

"From the moment of landing it will be about 14 minutes before we will get a confirmation signal back to Earth at the earliest to confirm that we are actually down safely on the surface," said program executive Dave Lavery.

While all indications are positive so far, Lavery said the mission carries plenty of unknowns.

"The reality is, this is a very risky business," he said. "Historically only 40 percent of missions to Mars have been successful. So there is never a guarantee of success."

Explore further: Biomarkers of the deep

add to favorites email to friend print save as pdf

Related Stories

New animation depicts next Mars rover in action

Jun 27, 2011

(PhysOrg.com) -- Although NASA's Mars Science Laboratory will not leave Earth until late this year nor land on Mars until August 2012, anyone can watch those dramatic events now in a new animation of the mission.

Next Mars rover nears completion

Apr 07, 2011

(PhysOrg.com) -- Assembly and testing of NASA's Mars Science Laboratory spacecraft is far enough along that the mission's rover, Curiosity, looks very much as it will when it is investigating Mars.

Mojave Desert tests prepare for NASA Mars Roving

May 14, 2012

(Phys.org) -- Team members of NASA's Mars Science Laboratory mission took a test rover to Dumont Dunes in California's Mojave Desert this week to improve knowledge of the best way to operate a similar rover, ...

NASA ready for November launch of car-size Mars rover

Nov 10, 2011

(PhysOrg.com) -- NASA's most advanced mobile robotic laboratory, which will examine one of the most intriguing areas on Mars, is in final preparations for a launch from Florida's Space Coast at 10:25 a.m. ...

Recommended for you

Bacteria manipulate salt to build shelters to hibernate

15 hours ago

For the first time, Spanish researchers have detected an unknown interaction between microorganisms and salt. When Escherichia coli cells are introduced into a droplet of salt water and is left to dry, b ...

How do we terraform Venus?

15 hours ago

It might be possible to terraform Venus some day, when our technology gets good enough. The challenges for Venus are totally different than for Mars. How will we need to fix Venus?

Biomarkers of the deep

16 hours ago

Tucked away in the southwest corner of Spain is a unique geological site that has fascinated astrobiologists for decades. The Iberian Pyrite Belt (IPB) in Spain's Río Tinto area is the largest known deposit ...

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

Feldagast
2 / 5 (2) Jun 12, 2012
Contaminate mars with teflon? As the fact that there are numerous pieces of other equipment scattered about the planet I would say we already contaminated the planet with non-terrestial objects.
scintilla
5 / 5 (1) Jun 12, 2012
Contaminate mars with teflon?


I think they refer to contaminating the rock samples that will be spectrally/chemically analysed, not the Mars environment in general.

The Mars Science Laboratory must have to be one of the most exciting missions carried out to date, and will be arriving in only 3 months!