A new analysis of a Martian rock that meteorite hunters plucked from an Antarctic ice field 30 years ago this month reveals a record of the planet’s climate billions of […]
biosignature
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets
Some inconvenient truths about biosignatures involving two chemical species on Earth-like exoplanets
The detection of strong thermochemical disequilibrium in the atmosphere of an extrasolar planet is thought to be a potential biosignature. In this article we present a new kind of false […]
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets, Plant Biology
Prospects for Detecting Oxygen, Water, and Chlorophyll in an Exo-Earth
The goal of finding and characterizing nearby Earth-like planets is driving many NASA high-contrast flagship mission concepts, the latest of which is known as the Advanced Technology Large-Aperture Space Telescope […]
Posted inMars, Meteorites & Asteroids
Evidence of Water in a Martian Meteorite
A team of scientists at NASA’s Johnson Space Center in Houston and the Jet Propulsion Laboratory in Pasadena, Calif., has found evidence of past water movement throughout a Martian meteorite, […]
Posted inBiochemistry & Organic Chemistry, Biosignatures & Paleobiology, Mars, Meteorites & Asteroids, Press Release
Research Shows Existence of Reduced Carbon on Mars
NASA-funded research on Mars meteorites that landed on Earth shows strong evidence that very large molecules containing carbon, which is a key ingredient for the building blocks of life, can […]
Posted inAstrogeology, Biosignatures & Paleobiology, Fossils & Paleontology, Mars, Meteorites & Asteroids, Microbiology & Virology, People Of Astrobiology, Status Report
ALH84001: The Key to Unlocking Secrets About Mars-15 Years and Counting
From the December 27, 1984 discovery of ALH84001, and its subsequent identification as a sample of Mars in 1993, mystery and debate has surrounded the meteorite [1].
Posted inAstrogeology, Biosignatures & Paleobiology, Fossils & Paleontology, Mars, Meteorites & Asteroids, Press Release
Rock of Ages – A Younger ALH84001
NAI scientists from the University of Wisconsin Team and their colleagues have shown that the true age of this famous meteorite is 4.091 billion years, about 400 million years younger […]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Cryobiology, Exploration Gear & Tech, Fossils & Paleontology, Icy Worlds, Imaging & Spectroscopy, Microbiology & Virology, Polar / Alpine Expeditions, Press Release, Tricorders & Sensors
Kevin Hand’s Antarctic Journal 1 March 2005
Ok, well, this is it folks, one last email and then I’m on a plane back to LA. I’ve been in New Zealand for a bit and I’ve finally had […]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Fossils & Paleontology, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Polar / Alpine Expeditions, Press Release, Tricorders & Sensors
Kevin Hand’s Antarctic Journal 8 February 2005
Hello again from Antarctica, Ok, well, I’m back at McMurdo Station. All went very well in the field – our instruments worked great, we collected lots of data, and had […]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biosignatures & Paleobiology, Cryobiology, Exploration Gear & Tech, Fossils & Paleontology, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Polar / Alpine Expeditions, Status Report, Tricorders & Sensors
Kevin Hand’s Antarctic Journal 20 January 2005
January 17th, 2005 Anticipation Comparisons of New Zealand to Purgatory are probably not that common. Nevertheless, for the past two weeks, this is exactly how it has felt. Christchurch, New […]