Skip to comments.
Astronomy Picture of the Day -- Opportunity's Decade on Mars
| January 25, 2014
| (see photo credit)
Posted on 01/25/2014 3:09:37 PM PST by SunkenCiv
Explanation: On January 25 (UT) 2004, the Opportunity rover fell to Mars, making today the 10th anniversary of its landing. After more than 3,500 sols (Mars solar days) the golf cart-sized robot from Earth is still actively exploring the Red Planet, though its original mission plan was for three months. This self-portrait was made with Opportunity's panoramic camera earlier this month. The camera's supporting mast has been edited out of the image mosaic but its shadow is visible on the dusty solar panels arrayed across the rover's deck. For comparison, a similar self-portrait from late 2004 is shown in the inset. Having driven some 39 kilometers (24 miles) from its landing site, Opportunity now rests at Solander Point at the rim of Endeavour Crater.
(Excerpt) Read more at 126.96.36.199 ...
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; mars; science
[Credit: NASA/JPL-Caltech/Cornell/Arizona State U.]
posted on 01/25/2014 3:09:37 PM PST
To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...
posted on 01/25/2014 3:10:05 PM PST
They need to drive it to a car wash.
posted on 01/25/2014 3:17:21 PM PST
(Proud resident of the State of Jefferson)
They need to drive it to a car wash
A few years ago the solar panels looked like this and they were afraid they would have to shut the rover down. In the distance, just as they were powering down for the local night, the camera caught an image of a dust devil.
When they powered it up the next (Mars) morning, they had a lot more power. The dust devil had passed directly over the rover and cleaned off the panels.
So I guess the right thing is to hope for another dust devil - the Mars equivalent of a car wash. However, at a top speed of less than 1 mph, they won't have much luck trying to chase one down.
posted on 01/25/2014 3:22:55 PM PST
I can’t believe I have followed this for ten years.
posted on 01/25/2014 3:32:33 PM PST
(Screaming like a "Vexatious requester" at a Wellstone memorial...........)
Or... Martians cleaned off the panels during the nightly power down?
posted on 01/25/2014 3:49:36 PM PST
Marvin says keep you hands off my Dunkin Donut!
posted on 01/25/2014 3:58:25 PM PST
by Young Werther
(Julius Caesar said "Quae cum ita sunt. Since these things are so.".)
This thing represents the Gold Standard for embedded systems!
The RAD6000 mostly runs at less than 20mhz for power conservation...lots of time in sleep modes.
The rovers run a VxWorks embedded operating system on a radiation-hardened 20 MHz RAD6000 CPU with 128 MB of DRAM with error detection and correction and 3 MB of EEPROM. Each rover also has 256 MB of flash memory.
The rover has an X-Band low-gain and an X-Band high-gain antenna for communications to and from the Earth, as well as a UHF monopole antenna for relay communications. The low-gain antenna is omnidirectional, and transmits data at a low rate to Deep Space Network dish antennas on Earth
The data from the low-gain omni antenna can be picked up on Earth even if the power drops to only a small fraction of a watt...you can hear almost anything with a good LNA and a 300ft dish.
posted on 01/25/2014 3:58:56 PM PST
(Happiness is a fast ISR)
We need your help to keep the lights on.
FR is funded solely by contributions made by
liberty loving people who enjoy and use it.
Two percent a day keeps the 404 away.
posted on 01/25/2014 4:16:38 PM PST
(Happy with this, America? Make your voices heard. 2014 is just around the corner. ~ Sarah Palin)
I don’t see any mountain lions.
posted on 01/25/2014 5:27:05 PM PST
(I am someone else.)
Opinions posted on Free Republic are those of the individual
posters and do not necessarily represent the opinion of Free Republic or its
management. All materials posted herein are protected by copyright law and the
exemption for fair use of copyrighted works.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson