Stardust Memories

A mission well played and an efficient use of taxpayer money too. They wrung every last bit of scientific data out of every last dollar.

Lights go out on NASA’s Stardust comet mission

Fresh off a bonus flyby of comet Tempel 1 in February, NASA’s Stardust spacecraft fired its four main engines for more than two minutes Thursday, draining its fuel tank as managers said goodbye to the well-traveled comet chaser after more than 12 years in space.

With Stardust’s single hydrazine fuel tank emptied, the craft lost its ability to control its orientation and the probe’s solar panels were expected to lose track of the sun, and officials anticipated the mission’s battery charge would be exhausted within hours.

Stardust was also programmed to turn off its radio transmitters about 20 minutes after the burn, just in case it might interfere with some future mission using the same frequency.

NASA announced the last transmission from Stardust was received at 7:33 p.m. EDT (2333 GMT) Thursday. Officials monitored the burn from the Jet Propulsion Laboratory in California and issued commands from the Lockheed Martin Corp. mission support center in Denver.

See also:
NASA and Lockheed Martin Say Goodbye to Historic Stardust Spacecraft
NASA’s Venerable Comet Hunter Wraps Up Mission
NASA’s Stardust: Good to the Last Drop
Inside NASA’s Space Funeral for the Comet-Hunting Stardust Probe
NASA kills off comet hunter
Comet-hunting spacecraft shuts down after 12 years
NASA Retires Comet-Hunter Stardust
NASA’s Stardust set to ‘burn to depletion’
NASA’s stardust empties its tank after 12 years
NASA’s ‘Comet Hunter’ Heads Off Into The ‘Sunset’
Stardust – NASA’s Comet Sample Return Mission
NASA – Stardust
Stardust (spacecraft)

Hopefully they put some type of return address on it.

/maybe, like a note in a bottle, something out there will find Stardust and bring it back home, as long as they’re good aliens that come in peace

The Little Rover That Could

Opportunity makes the most of its opportunity.

NASA’s Mars Rover Opportunity Sets Longevity Record

Nov. 11, 1982 was a bittersweet day on Earth. It was Veterans Day; the Vietnam Veterans Memorial in Washington would be dedicated that weekend. And at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., engineers made a mistake.

They were trying to nurse along the Viking 1 lander on Mars, which had touched down there in 1976 — and surprised them by surviving in the eternal cold there for six years, three months, and 22 days. They transmitted new commands to the ship’s computer so that its batteries would hold a charge better. By accident, they erased data that helped the lander aim its antenna to Earth. Viking 1 was never heard from again.

But its record for longevity has stood. Until now.

Today the Mars Exploration Rover Opportunity, which landed on Mars on Jan. 25, 2004, becomes the longest-lasting earthly visitor ever to the Martian surface. It is still going after 2,247 “sols,” or Martian days. It was designed to last for 90.

“Remember, 90 days is when the warranty runs out,” said Steve Squyres, the principal investigator for Opportunity and its twin rover, Spirit, after they landed three weeks apart. “It’s not when the wheels fall off.”

Opportunity’s six wheels have occasionally gotten stuck, and one of them will no longer steer. Its circuit boards have had to withstand the subzero temperatures of Martian winters, and another is beginning. Its solar panels, at times, have been covered with fine red silt, which made them almost useless for gathering sunlight to make electricity. Life on Mars is tough.

But the solar panels have mercifully been blown clean every time by gusts of wind, much to the relief of NASA engineers. Careful maneuvering has gotten Opportunity out of the sand — once after six weeks of trying. Today they celebrated Opportunity’s record by doing what they’ve been doing since 2008 — keeping the rover on a forced march to a large crater called Endeavour, now eight miles away on the horizon.

See also:
New Record Set for Longest Mission on Mars
Mars Rover Surpasses Viking 1’s Longevity Record
Longevity Record on Mars for a NASA Space Rover
Mars Rover Sets Endurance Record
Mars rover surpasses Viking 1’s longevity record
NASA Mars rover Opportunity breaks longevity record
Opportunity rover breaks Mars longevity record
Mars Exploration Rover Mission: Home
Mars Exploration Rover

/now that’s what’s called bang for the buck, if only Congress were this efficient with our tax dollars