Phoenix Mars Lander Deploys Robotic Arm, Possibly Finds Ice 168
The Phoenix Mars Lander has successfully deployed its robotic arm and tested other instruments including a laser designed to detect dust, clouds, and fog. The arm will be used to dig up samples of the Martian surface, which will be analyzed as a possible habitat for life. A camera on the arm will allow pictures to be taken of the ground directly beneath the lander. The camera has already seen what may be ice, which was exposed when the soil was disturbed by the landing. The data collected by the arm will be compared to recent findings which suggest that water on Mars may have been too salty for most known forms of life.
Re:How is this news? (Score:5, Informative)
The rovers can't dig as deep, nor could they have survived more than a season at these polar latitudes either. There isn't as much ice (or for that matter, any ice that we've been able to find) at the latitudes where the rovers are operating.
As for what we already have on Mars, we have rovers that have amazingly gone almost 10km each. That's about 1% of the distance they'd have to cover to get to where this one is. So in terms of "what we have on mars" that "are capable of finding out what the polar ice caps are like", we currently had nothing until Phoenix.
Re:Extremophiles (Score:5, Informative)
Looks like it is just very unlikely with what we know.
Re:Black and White Ice (Score:5, Informative)
Additionally they use color patterns on the probes body to calibrate the color generation based on the known color of the patterns (American flag, etc. on Phoenix). They need this because of the way that sun light is affected by the martian atmosphere (which can vary based on local conditions).
Re:Black and White Ice (Score:5, Informative)
If they want a standard color image, they can take three pictures with R, G, B filters and combine them. It's not like anything they're (likely) going to take a picture of is going to move anyway, so taking 3 sequential images won't be a problem.
Grayscale images are also smaller (bandwidth-wise) so they can transmit faster. No use wasting time transmitting a larger image if your camera is pointed at the wrong thing.
Re:Go halophiles! (Score:2, Informative)
Re:Finally a solution for glbal warming (Score:1, Informative)
Re:Lets get our priorities straight! (Score:5, Informative)
NASA is the catalyst behind much of the research and development in areas that might help solve this problem you are so worried about.
Fuel Cells [nasa.gov], Solar Technology [alternativ...-news.info], and a better understanding of the Sun [nasa.gov]and it's fission come to mind.
Planetary geology, atmospheric science, agriculture (thanks for the weather satellites and accurate maps of the Earth guys) gee I could go on.. all these things are directly beneficial to humanity and the quest of sustaining our existence on this planet.
I just can't fathom how anyone thinks planetary science and exploring space is pointless intellectual drivel. Wow.
Re:Extremophiles (Score:5, Informative)
There's certainly a possibility of some exotic form of life arising in extreme (for us) conditions, but we shouldn't be expecting it to be possible, as there's no evidence that it can happen.
Re:How is this news? (Score:4, Informative)
Re:Disturbed by the landing? (Score:5, Informative)
Brett
Re:Extremophiles (Score:5, Informative)
You state that as if it were a fact, rather than the opinion it actually is.
They aren't saying conditions are good for life based on what we consider habitable. They saying conditions are good for life based on the laws of physics and chemistry and reasonable extrapolations from the same.
Re:Disturbed by the landing? (Score:5, Informative)
Yes. The retrorockets are designed to produce minimal contamination and/or disturbance. (And they shut off a couple of meters above the ground to further reduce the effects.) The arm is designed to dig down well below the expected penetration level of any contamination or disturbance.
Re:Black and White Ice (Score:4, Informative)