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Ask Us Any Questions You Have By now I'm sure you've heard the news: A major international research group has found evidence of extraterrestrial materials in NASA's Viking Mars landers. I'd like to start by saying that the findings will likely not really change the history of science as we knew it, but there is a very good chance that the findings of this project will profoundly impact the future of space exploration.
Since the Viking missions to Mars were launched, scientists have determined that this planet is actually inhabited, in a geological sense, with diverse array of microbes, ranging from those that thrive in hot, dry environments to those that thrive in freezing cold depths. The new findings can help us answer a crucial question about these microbes: What kind of organisms lived on Viking Mars? The answer, as it turns out, is rather different than we previously knew.
Using a technique called spectroscopy, the team found evidence of presence hydrogen peroxide in chemical deposits the Viking Mars samples. These compounds, called peroxides (like hydrogen peroxide) are produced on Earth
where to buy real viagra online uk by both living and dead microbes, they are the most common substances present at the bottom of oceans. Peroxides are very common, forming in marine habitats like coral reefs and kelp beds. When you look down deep in the ocean and look out at the surface of planet below, you see these hydrogen peroxide clumps that look like sponges with spore-bearing tentacles sticking out each end of the spherules. spore-bearing tentacles are thought to be sponges and peroxides, as those types of organisms require oxygen to consume their food. That's where the spore-bearing tentacles come in, but there are actually different types of peroxide, ranging safe place to buy viagra online uk from common ones down to that are only found in certain types of sponges and organisms. We have to know the difference in order to decide if this Viking landing site is a peroxide sponge or not—and that's a very important question, one that NASA is just beginning to address.
The Viking-Venus missions found same hydrogen peroxide signatures, but the signatures were different than what we expecting. It turns out that methane and hydrogen peroxide—two of the most important components fossil fuel and the sources of spacecraft like International Space Station—can co-exist. The hydrogen peroxide in Viking samples are not the same types of peroxides that we found in the ancient atmosphere of Mars, but they are close enough. Furthermore, as far we can tell from the way they oxidized in microbe-saturated hydrothermal vents, they are indeed methane-based peroxides in a hydrothermal environment.
However, there was a problem. Those ancient, oxygen-enriched atmospheres of Martian volcanoes where organisms with hydrogen peroxide are thought to come from did
Over the counter for flagyl not exist here on the surface of Mars, where Viking samples were collected. It appears that the Viking landers had been contaminated with oxygen
Phenergan online australia (and, in many cases, bacteria), which resulted in the hydrogen peroxide clumping Martian soil and in certain chemicals that could have occurred in the samples, as discussed above. Viking-Venus and Earth studies are not mutually exclusive—the researchers just could not make sure that the hydrogen peroxide in these samples came from places that are the same as Viking-Venus and Earth peroxides. We still don't have the kind of data that we would like to start answering some of the really big questions about these two places.
For those of you who are familiar with the debate going on for a long time between life on Mars and Earth, this will of course also have a huge impact on the future of human exploration Mars. If there is life today on the Mars surface—a lot of evidence indicates that there is—it would be very
Can you buy maxidex over the counter different from that which we saw in the Viking samples, either because organisms have much more limited environments or because they live in higher latitudes. The only way that life on Mars (like, say, Titan!) might look like we see it on Earth is if there an atmosphere on Mars that is sufficiently rich in oxygen and is compatible with modern life. The results of this recent experiment, while not having the impact that they might have at first seem, will surely add to the evidence, and that should only be good.
We have no idea how many extraterrestrial organisms out there are there, and although we don't want to rush into any particular conclusion just yet, one of the problems with using only one type of peroxide in the Martian environment has always been to not rule out a more interesting scenario. What we are seeing here certainly seems to do that, by showing that some potential new scenarios ()
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