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Students from The Lancaster Day School in Pennsylvania have been following the Planetary Lake Lander, and wrote in with a lot of very good questions about what the project. Several of these questions were answered by Dr. Nathalie Cabrol, the Principal Investigator for the Planetary Lake Lander Project, and Dr. Ellen Stofan, the Principal Investigator for the Titan Mare Explorer (TiME) mission that was proposed to NASA last year. Dr. Cabrol, an astrobiologist, and Dr. Stofan, a planetary geologist, are both scientists who study the surfaces of Earth and other planets in order to understand the physical processes, such as glaciation, volcanism and erosion, that shape planetary surfaces over time and lead to the development of possible habitats for life . I hope to get answers to all of these questions posted for you soon. In the mean time, here is one that we posted on the official blog of the Planetary Lake Lander. Q. What kind of life may be possible on Titan/Saturn/Mars? Why is NASA
(and why are you) so interested in Titan? A. We know that comets and asteroids have delivered the carbon compounds or building blocks of life all over the solar system. Astrobiologists believe that life requires water, a source of energy (like lightning or volcanism) and nutrients. Life on Saturn, with its high pressure and hydrogen gas atmosphere is not like any habitable environment that we know of! However, science fiction writers have thought of organisms that could live off lightning floating in the clouds! At Titan, there is no liquid water and it is very, very cold. However, there are liquid hydrocarbons (sort of like oil or gasoline) and there is much about the evolution of life here on Earth, let alone on other planets, that we would learn from exploring the undoubtedly complex organic chemistry in Titan’s lakes. Titan can be thought of as having conditions similar to those of Earth when life evolved, only much colder! Mars was very similar to Earth for a short period of time, with liquid water on its surface, so life is likely to have evolved. But since the time period was short, life is likely to be microbial. There are no glaciers on Titan- its cold climate has been stable for a long period of time. High-resolution orbital imagery of Mars has revealed evidence of glaciers on its surface- the youngest are likely 500,000 years old. We know these glaciers must have gone through periods of melting and sublimation. Some of this glacial ice may be preserved under layers of debris. This ice may still harbor microbial life, so they would be excellent targets for a future Mars mission! The lake in the Andes is being used to test technology to explore lakes on Titan, while the conditions in the deglaciating lake may be similar to those at some point in Mars’ past. And of course, they are also helping us to understand the effects of our warming climate on ecosystems here on Earth. Alternative Title; Eric Finds Pea Under Mattress, Looses Princess Status.
The South end of Laguna Negra is a Glacial Terminal Moraine that effectively blocks the runoff from The Echaurrenn Glacier forming this giant lake. The terminal morain might be called something else by non-geologists, like " a big-ole pile o rocks. Finding a place to pitch camp involves working with the landscape. creativity, and acceptance Having gone up into the Andes Mountains in Chile just after Thanksgiving, and spending 3 weeks without access to phone, text, TV,or email, Its both a pleasure and a shock to be back in a city.
I cant say 'Back in Civilization" because the Base Camp at Laguna Negra might have been the most "Civilized" place I have ever been: Working in the shadows of glaciers with a dozen or more NASA Scientists preparing for a Robotic Exploration of other planets, Eating Expedition Cuisine with them in a Dome Tent while listening to classical music drowned out by the roaring wind, while helping to assemble a prototype future spacecraft that thinks for itself is not what I call Uncivilized. None the less, a hot bath, a traditional meal, and a soft bed was not unappreciated. Ill post a few fotos of the Expedition Right Away, andtry to share some of the action that I didnt post on the Planetary Lake Lander Website. All the best, Eric |
My Name is Eric and My Job is Scientific Exploration.
That means I'm lucky enough to join expeditions to excavate sunken cities, climb volcanoes, find missing bombs, and Sail old research vessels, while searching for the mysteries of the natural world. Categories
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