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Decade-Old Rover Adventure Continues on Mars and Earth

By Guest PostJanuary 4, 2014Scienceancient environment, austin, bekah sosland, brett williams, columbia hills, earth, endeavour crater, Facebook, fredericksburg, high school teacher, image, john callas, jpl, mars, mars rovers, mars spacecraft, martian history, NASA, opportunity, red surface, rover adventure, rover project, spirit, Twitter, university of texas, water rich

Eighth graders didn’t have Facebook or Twitter to share news back then, in January 2004. Bekah Sosland, 14 at the time, learned about a NASA rover landing on Mars when the bouncing-ball video on the next morning’s Channel One news in her Fredericksburg, Texas, classroom caught her eye.

“I wasn’t particularly interested in space at the time,” she recalled last week inside the spacecraft operations facility where she now works at NASA’s Jet Propulsion Laboratory in Pasadena, Calif. “I remember I was talking with friends, and out of the corner of my eye I noticed this thing bouncing and rolling on a red surface. I watched as it stopped and opened up, and it had this rover inside.” (more…)

Evidence of 3.5 billion-year-old bacterial ecosystems found in Australia

By Guest PostNovember 25, 2013Environmentancient photosynthetic bacteria, australia, bacterial films, biofilms, carnegie, daniel christian, david wacey, dresser formation, dresser miss fossils, earth, environments, famous geological regions, history, hydrothermal, mars rovers, microfossils, miss, nora noffke, old bacterial ecosystems, old dominion university, oldest sedimentary rocks, pilbara district, playa like setting, polygonal oscillation cracks, robert hazen, stromatolites, tectonic activity, western australia

Washington, D.C.— Reconstructing the rise of life during the period of Earth’s history when it first evolved is challenging. Earth’s oldest sedimentary rocks are not only rare, but also almost always altered by hydrothermal and tectonic activity. A new study from a team including Carnegie’s Nora Noffke, a visiting investigator, and Robert Hazen revealed the well-preserved remnants of a complex ecosystem in a nearly 3.5 billion-year-old sedimentary rock sequence in Australia. Their work is published in Astrobiology.

The Pilbara district of Western Australia constitutes one of the famous geological regions that allow insight into the early evolution of life. Mound-like deposits created by ancient photosynthetic bacteria, called stromatolites, and microfossils of bacteria have been described by scientists in detail. However, a phenomenon called microbially induced sedimentary structures, or MISS, had not previously been seen in this region. These structures are formed from mats of microbial material, much like mats seen today on stagnant waters or in coastal flats. (more…)

Study of How Brain Corrects Perceptual Errors Has Implications For Brain Injuries, Robotics

By Guest PostMarch 24, 2011Sciencebiological and artificial systems, brain, david bowie, david wozny, flash of light, ladan shams, mars rovers, milliseconds, NASA, perception of the sound, perceptual systems, radio static, rehabilitation from brain injuries, robotic recalibration, sensory recalibration, shams, shams and wozny, spatial map, static environments, ventriloquist illusion

“Don’t you wonder sometimes about sound and vision?” — David Bowie

New research provides the first evidence that sensory recalibration — the brain’s automatic correcting of errors in our sensory or perceptual systems — can occur instantly.

“Until recently, neuroscientists thought of sensory recalibration as a mechanism that is primarily used for coping with long-term changes, such as growth during development, brain injury or stroke,” said Ladan Shams, a UCLA assistant professor of psychology and an expert on perception and cognitive neuroscience. “It appeared that extensive time, and thus many repetitions of error, were needed for mechanisms of recalibration to kick in. However, our findings indicate we don’t need weeks, days, or even minutes or seconds to adapt. To some degree, we adapt instantaneously. (more…)

Tag Archives: mars rovers

Decade-Old Rover Adventure Continues on Mars and Earth

Evidence of 3.5 billion-year-old bacterial ecosystems found in Australia

Study of How Brain Corrects Perceptual Errors Has Implications For Brain Injuries, Robotics