Nov 19, 2013
In this interview with the Associated Press, Heidemarie Stefanyshyn-Piper describes the disheartening experience of 'dropping' a tool bag in orbit. Credit: The Associated Press.
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In this interview with the Associated Press, Heidemarie Stefanyshyn-Piper describes the disheartening experience of 'dropping' a tool bag in orbit. Credit: The Associated Press.
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Nicely done. A fun and informative breakdown of the difference between theory and scientific theory from Bite Sci-zed.
Jennifer Cole is the chief of the Aerodynamics and Propulsion Branch at NASA’s Dryden Flight Research Center, Edwards, California. Cole grew up next to a Naval air station and, according to her, she has been “hooked on anything that flew” for as long as she can remember. Now she spends her time working with some of the most advanced aeronautics projects in the world - from unmanned and crewed flight vehicles to autonomous formation flight and automated aerial re-fueling.
Megan Elwood Madden talks about Gas Hydrates as Planetary-Scale Water and Greenhouse Gas, and the implications for astrobiology.
Elwood is the Stubbeman-Drace Presidential Professor at the School of Geology and Geophysics, University of Oklahoma. Her work is in the field of Planetary Geochemistry. This is a sub-discipline of Geology and Planetary Science, where scientists apply our knowledge of geochemistry on Earth to other planets.
"Evidence indicates that Mars was warmer and wetter in the past. In order for water to have been stable, the atmosphere must have been thicker than current conditions. I will discuss possible loss mechanisms in the Martian history, paying particular attention to the mechanisms by which the atmosphere may have been lost to space." - Erika Harnett, Research Assistant Professor at the University of Washington
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NASA's Curiosity rover has returned images of what may have been a riverbed on Mars. The observations reveal areas with gravel and pebbles. After studying the size and shape of the pebbles, a team of scientists has reported that the features are clear evidence of flowing water on ancient Mars. Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Lead author fo the study is Dr. Rebecca Williams, Senior Research Scientist Planetary Science Institute (Tucson, AZ). Check out the link for a mini-interview with Williams concerning the research.Â
Scientists have identified living cells from more than 500 feet beneath the seafloor in 5 million-year-old sediments. The organisms include archaea, bacteria and eukaryotes. The research was co-authored by Jennifer Biddle. Biddle is an Assistant Professor, Marine Biosciences, in the College of Earth, Ocean, and Environment at the University of Delaware.
Biddle has studied microbial ecology in beneath the seafloor, and also in lakes like Canada's Pavilion Lake. Her work is helping astrobiologists understand how life is able to survive (and oftentimes thrive) in these extreme environments.
Planetary scientist Serina Diniega (NASA Jet Propulsion Laboratory) has been making headlines with her research on martian surface formations. A new study that she authored describes how hunks of frozen carbon dioxide (or dry ice) could create marks on martian sand dunes by gliding down the slope on cushions of gas.
“I have always dreamed of going to Mars. Now I dream of snowboarding down a martian sand dune on a block of dry ice.” -Serina Diniega