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Displaying results 1 - 10 of 43 items found.

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1. Ulysses is in peril

(Web Page; Mon Apr 23 02:01:00 CDT 2012)

The Ulysses mission is nearing its end, as steadily declining available power is threatening the spacecraft's ability to keep its fuel from freezing. A creative plan to bleed fuel to keep it from freezing has prolonged the spacecraft's ...

Description: Ulysses is in peril

2. Webcast of Ulysses last day of operations

(Web Page; Mon Apr 23 01:51:00 CDT 2012)

After 18.6 years in space and defying several earlier expectations of its demise, the joint ESA/NASA solar orbiter Ulysses will achieve "end of mission" on June 30, 2009. The final communication pass with a ground station will start at 1...

Description: Webcast of Ulysses last day of operations

3. Ulysses: Still not dead yet

(Web Page; Mon Apr 23 02:00:00 CDT 2012)

Not only is ESA's solar orbiter Ulysses still alive, but it actually has had a brief resurgence of science activity over the past couple of months.First, a review. More than a year ago, on January 15, 2008, during Ulysses' 18th year in ...

Description: Ulysses: Still not dead yet

4. "Ulysses is not dead yet."

(Web Page; Mon Apr 23 02:01:00 CDT 2012)

ESA issued a statement in February saying that, as Ulysses' radioisotope thermoelectric generators were running out of power, the spacecraft would likely die some time this year. The actual death blow to the spacecraft was likely to be ...

Description: "Ulysses is not dead yet."

5. Ulysses to fall silent, its voyage to continue forever

(Web Page; Mon Apr 23 02:02:00 CDT 2012)

ESA issued a statement on Friday to the effect that the Ulysses mission will soon be ending after more than 17 years in space. The statement finally explains something I didn't understand about the anomaly the spacecraft suffered in Jan...

Description: Ulysses to fall silent, its voyage to continue forever

6. An update on Ulysses: Recovery from sun sensor anomaly

(Web Page; Mon Apr 23 02:01:00 CDT 2012)

I posted on Monday about an anomaly on Ulysses possibly endangering the mission. In fact, by then Ulysses had already recovered, although that information wasn't yet available on the status reports page from which I got Nigel Angold's m...

Description: An update on Ulysses: Recovery from sun sensor anomaly

7. Stretching out Ulysses' life as long as possible

(Web Page; Mon Apr 23 02:02:00 CDT 2012)

A reader pointed me to an item on ESA's Ulysses website that indicates the mission is getting very creative in its attempts to spin out the mission for just a few more days. As I mentioned in an earlier blog post, Ulysses is running low...

Description: Stretching out Ulysses' life as long as possible

8. MESSENGER update: no image until tomorrow morning

(Web Page; Mon Apr 23 02:02:00 CDT 2012)

One last edit to this entry (I promise); after a lot of back and forth about whether they were going to release the image tonight, it finally did get released. Here's my take on it.EDIT: Sorry for all my confusion -- don't expect an ima...

Description: MESSENGER update: no image until tomorrow morning

9. Field Report from Mars: Sol 3790

(Web Page; Tue Sep 23 07:56:00 CDT 2014)

There was a stand-down of activities on Opportunity for a week or so as we emptied the flash memory and reformatted it following discovery of some “bad” flash memory blocks. Like re-formatting the memory card in your camera w...

Description: After a stand-down of activities to reformat its flash memory, Opportunity has re-commenced the long climb up this high and steep segment of the Endeavour crater rim.

10. Mars Exploration Rovers Update: Spirit Celebrates 3 Martian Years, Opportunity Finds Blockbuster in Block Island

(Web Page; Sat Sep 15 16:32:00 CDT 2012)

Three Mars years Sol 2008 -- August 26, 2009 for Spirit and September 16, 2009 for Opportunity -- marks three Martian years of explortation for the twin robot field geologists. A year on Mars is approximately 687 Eart...

Description: The Mars Exploration Rovers hunkered down in place in August and delivered more mission "gold" as they achieved new milestones and uncovered more scientific gems, not the least of which was a blockbuster of a meteorite. But August proved to be a stormy month, uniquely challenging and one that many on the Mars Exploration Team will never forget.

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