The latest news from Mars is that circuits on the Mars Exploration Rover Mission equipment are not doing well. There are actually several rovers currently active on Mars and each are having their own problems.
There is currently no news on the success or failure of the TEGA equipment on the Phoenix rover. The Phoenix is at the Mars Polar Ice Cap and scraping soil samples for testing in the TEGA. Those tests will determine the presence of water on Mars, past or present.
A second MER (Mars Expedition Rover) is called Spirit. Spirit has been moving very slowly, but it is making progress towards a place called Home Plate. Once there it will be looking for evidence of water movement in the area.
Spirit has been experiencing problems keeping its batteries solar charged. The MER website has a great series of pictures that show the source of the problem. The images show what appears to be a broken hard wire connection on a solar panel. That will definitely affect the output of that panel.
Spirit is moving slowly and has made 4.7 miles progress toward Home Plate. Spirit has soft rubber wheels that have been slipping in the loose Martian soil.
Spirit has been doing as much travel backwards, as it has forwards recently due to loose soil conditions it is currently experiencing. NASA is not reporting any expectations that Spirit will not complete its basic mission.
With a bit of chagrin I also report that there is a third MER operating on the Martian surface. In an earlier post I corrected a CNN reporter for saying there was only one functioning Rover on Mars. Turns out there is actually a third rover functioning on the Martian Plains.
The third MER is called Opportunity. It has completed 7.25 miles on its journey to the Victoria Crater. The Opportunity has a robotic arm with four tools for soil sampling. The motor that controls the sideway motion of the robotic arm on the Opportunity has been stalling recently.
From the MER website we have this report:
"Even under the worst-case scenario for this motor, Opportunity still has the capability to do some contact science with the arm," said JPL's John Callas, project manager for the twin rovers Opportunity and Spirit. "The vehicle has quite a bit of versatility to continue the high-priority investigations in Victoria Crater and back out on the Meridiani plains after exiting the crater."
The Phoenix rover is having circuit problems with the TEGA. The Spirit rover has a broken wire on its solar panels, and the Opportunity rover has an electrical motor experiencing problems. Electrical problems appear to be a constant theme on all the Mars rovers.
There are currently great images on the Mars Expedition Rover homepage. The photos show where the Spirit and Opportunity are heading and there are articles giving a more detailed explanation of each mission.
You will find information on the Phoenix Mars Mission rover at the University of Arizona website. That link is also on the blogroll to the right of this page.
The good news from Mars today is that the Jet Propulsion Labs out of Pasadena, CA are stating that they now believe that an asteroid that will approach Mars in January will not strike the Martian surface.
That is one less problem for the NASA MER teams to be concerned about. They have their hands full as it is.
We wish them success.
Smiles. ET
No comments:
Post a Comment