Steve Squyres
Steve Squyres
Steven W. Squyresis the James A. Weeks Professor of Physical Sciences at Cornell University in Ithaca, New York. His research area is in planetary sciences, with a focus on large solid bodies in the solar system such as the terrestrial planets and the moons of the Jovian planets. Squyres is principal investigator of the Mars Exploration Rover Mission. He is the recipient of the 2004 Carl Sagan Memorial Award and the 2009 Carl Sagan Medal for Excellence in Communication in...
across columbia far hills january looked necessary night order plains quickly realized seemed sought stuff touched water whether
When we first touched down at Gusev Crater on the night of January 4, 2004, the Columbia Hills seemed impossibly far away. It was a necessary place for us to get to, though, because as we looked across the plains we quickly realized these plains were made of basaltic lava. This was stuff that was interesting but did not tell us what we really sought to know about Gusev Crater, and that is whether there had been water here. So in order to find something, in order to find something different, we had to make that mile-and-a-half drive.
carry climb head hill husband summit
We still want to get to the summit of Husband Hill and then head down into the 'Inner Basin' on the other side. But now we have more flexibility in how we carry out the plan. Before, it was climb or die.
climb field figure geologist geologists hill land lay nearest robotic spirit top
What field geologists typically do - and Spirit is a robotic field geologist - is you climb to the top of the nearest hill and take a look around so you get the lay of the land and figure out where you want to go,
climb columbia far heck hills looked touched
That's no Mt. Everest, but it's a heck of a climb for our little rover. When we first touched down at Gusev Crater on Jan. 4, 2004, the Columbia Hills looked impossibly far away.
climb columbia far heck hills looked touched
That's no Mt. Everest, but it's a heck of a climb for our little rover, ... When we first touched down at Gusev Crater on Jan. 4, 2004, the Columbia Hills looked impossibly far away.
course far five hills sit
Our requirement for how far we should be able to traverse over the course of the mission, was 600 meters. These hills are five times that far away. OK, so don't sit here and think, 'Oh, we're going to go to the hills.' We're going to go 'toward' the hills.
along chris dig driving dust hills lee mountain remember rock shadow side slip struggling stuck stuff wheels wind
Chris will remember vividly as we were struggling along the northwestern flank of that mountain how much loose, fine-grain stuff there was. Our wheels would dig in, we'd slip around and we'd dig in deep. Remember that potato-sized rock we got stuck in the wheel once? It was really treacherous driving because there was accumulated dust there. We were probably in the wind shadow on the lee side of the hills at that point.
hiking hills climbs
We didn't know if the rover could climb up or down the hills of the crater.
both decisions faced hill images next places present several sides steep tasty weeks
The hill is very steep in places ... and the orbital images show a lot of tasty geology, some of it in pretty nasty-looking places. All in all, the next several weeks are going to present us with some of the most interesting route-finding decisions that we've faced in a long time, on both sides of the planet.
driving hang
We're also really getting the hang of driving in this terrain.
changes compelling consider evidence flowing surface water
We've got some evidence, I think, of water flowing through the rocks, and changes in chemistry, I don't think we have what any of us would consider compelling evidence for surface water yet.
discovery driven speed survival travel
Our speed of travel is driven as much by survival as by discovery.
fact frost involved level might understand wind
Wind has to be involved at some level you figure. Frost might have helped. A frost build-up on arrays could coagulate the dust...but the fact is that we don't understand it very well. But I'll take it.
bedrock bit decision drive mostly north onto start swing terrain western
We can see most of the crater from where we are right now, and we've made the decision that we're going to traverse around it on its western side. We're actually going to start the drive around the crater by going north a little bit ... to get onto terrain that's mostly bedrock ... before we swing west.