The current mean temperature on the equator of Mars is a blustery 69 degrees below zero Fahrenheit. Scientists have long thought that the Red Planet was once temperate enough for […]
meteorite
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Mars, Meteorites & Asteroids, Press Release
Researchers Publish Latest Results in Continuing Search for Ancient Martian Life
In the latest study of a 4.5 billion-year-old Martian meteorite, researchers have presented new evidence confirming that 25 percent of the magnetic material in the meteorite was produced by ancient […]
Posted inArctic / Antarctic / Alpine, Biosignatures & Paleobiology, Fossils & Paleontology, Meteorites & Asteroids, Microbiology & Virology, Panspermia, Status Report
Doubts About ALH84001: The JSC Mars Meteorite Team Responds
Editor’s note: the following is a response provided to SpaceRef by the JSC Mars Meteorite Team (David McKay, Kathie Thomas-Keptra, and Everett Gibson) regarding a paper “Magnetite morphology and life […]
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Mars, Meteorites & Asteroids, Microbiology & Virology, Status Report
Commentary by NASA ARC’s Chris McKay on Magnetotactic Bacteria on Mars
The recent paper by Imre Friedmann and co-authors in PNAS (PNAS vol 98 page 2176, 2001) reports finding chains of magnetite that are consistent with a biological origin.
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Meteorites & Asteroids, Origin & Evolution of Life, Panspermia, Press Release
New Analysis of Meteorite Shows Key Ingredients for Life on Earth May Have Been Delivered by Comets
An object that fell to Earth more than 136 years ago has revealed new clues about the origin of meteorites in space and new information about how life may have […]
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Imaging & Spectroscopy, Meteorites & Asteroids, Microbiology & Virology, Panspermia
4 Years Later … The Case For Life On Mars Withstands Criticism, Gains Support
The editors of Precambrian Research and the team that startled the scientific world in August 1996 with evidence they had found in a Martian meteorite indicating that life once existed […]
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Mars, Meteorites & Asteroids, Press Release
New Evidence Strengthens Claims of Ancient Life on Mars – Study of Martian Meteorite Reveals Magentic Fossils
Researchers have found magnetic material in a 4.5-billion-year-old Martian meteorite that could only have been produced by bacteria. This new data strongly supports the primitive life on Mars hypothesis of […]
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Imaging & Spectroscopy, Mars, Meteorites & Asteroids, Microbiology & Virology, Press Release
New Report Offers Evidence of Primitive Life on Mars
A new scientific report offers compelling evidence that primitive life existed on Mars. Tiny magnetite crystals, identical to those used by aqueous bacteria on Earth as compasses to find food […]
Posted inAstrochemistry, Astrogeology, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Mars, Meteorites & Asteroids, Panspermia, Press Release
Doubt cast on life on Mars – University of Greenwich Reproduces Chemical Structures Found In Meteorites
The complex chemical structures found in a meteorite from Mars, which scientists in 1996 hailed as possible evidence of past life on the planet, can be reproduced quite simply in […]
Posted inArctic / Antarctic / Alpine, Astrochemistry, Astrogeology, Atmospheres, Climate, Weather, Habitable Zones, Mars, Meteorites & Asteroids
Mars May Be Even Wetter Than It Was Last Week
In less than a week, our collective understanding of the amount of water on Mars has been totally revamped. First there was the announcement that liquid water is apparently at […]