Fine Threads since 2008
- Mar 22, 2008
- Reaction score
Its crushable understructure. o O ( What's the last thing that goes through a lander's mind when it hits the windshield of a Mars . . . )
The crater observed by MRO due to the Schiaparelli impact reminded me of something."Photos show European Mars probe crashed, may have exploded"
The discovery of these “white” impact craters began in August 2008, the orbiter’s Context camera team examined their images for any dark spots or other changes that weren’t visible in earlier images of the same area. Meteorites usually leave dark marks when they crash into dust-covered Mars terrain.
The HiRISE team followed up in September 2008 by taking high-resolution images of the dark spots.
“We saw something very unusual when we followed up on the first of these impact craters,” Byrne said, “and that was this bright blue material poking up from the bottom of the crater. It looked a lot like water ice. And sure enough, when we started monitoring this material, it faded away like you’d expect water ice to fade, because water ice is unstable on Mars’ surface and turns directly into water vapor in the atmosphere.”
A few days later in September 2008, the orbiter’s “CRISM” team used their Compact Reconnaissance Imaging Spectrometer for Mars and got the spectral signature of water ice exposed in one of the impact craters, further clinching the discovery.
“All of this had to happen very quickly because 200 days after we first saw the ice, it was gone, it was the color of dirt,” Byrne said. “If we had taken HiRISE images just a few months later, we wouldn’t have noticed anything unusual. This discovery would have just passed us by.”
Don't forget, Opportunity was designed to last for 90 days. Despite some early injuries it has fulfilled the mission, and is now a little old, slightly worn, forgotten by some these days, but still showing some of the newer models how to last. (Kind of like the Michael Collins of Mars.)54km too far. And depressing, because we know Oppy won't last 54 more km.
So, theoretically, how close would Op have to be for the mission planners to have considered a detour? 1km? 2km 5km?
That would depend on how thick was the subsurface ice at this near equatorial site. According to the article I linked to, it took 200 days for it to sublimate at the mid latitude site.Couple dozen meters. Otherwise, the ice will have sublimated before the rover arrives.
In the article you quoted says Opportunity has travelled 40,25 km since 2004. I dont think its realistic to double that distance in 13 days?That would depend on how thick was the subsurface ice at this near equatorial site. According to the article I linked to, it took 200 days for it to sublimate at the mid latitude site.
The Opportunity rover has a top speed of 5 cm per second, 0.18 km/hr, though it commonly travels at 1/5th that speed because it constantly checks the terrain ahead before proceeding.
So at top speed it would take 12.5 days to get there. Perhaps MRO could do imaging of the area in order to plot a route with few obstacles so Opportunity could travel near top speed.