Articles tagged with Exobiology
Researchers outline proposals for 'technosignatures' - evidence of technology use in other parts of the Universe- to search for intelligent extraterrestrial life. The study suggests searching for industrial pollution, large satellite swarms, and gigantic space engineering work as potential signs of civilization.
A new study models the climate on a future supercontinent, predicting significant changes in temperature and habitability. The Amasia scenario, with continents converging around the poles, would lead to colder temperatures and more snowfall, while the Aurica scenario, closer to the equator, would result in warmer temperatures.
Astrobiologists Dirk Schulze-Makuch and Jacob Heinz found thiophene molecules on Mars consistent with biological origins. Non-biological processes, such as meteor impacts or thermochemical sulfate reduction, also remain possible explanations.
A study suggests that ancient rock structures on Earth may be mistaken for fossils, which could aid future Mars missions. Research by University of Edinburgh scientist Sean McMahon created synthetic iron-rich formations in the lab, mimicking those found on Mars.
A study in the Atacama Desert found that microbial life can be transported across the hyperarid environment using wind-driven dust particles. This suggests that potential microbial life on Mars may spread similarly, with implications for future research and exploration.
Experiments with salt-tolerant bacteria in brine have shown that microbes can survive and grow in conditions similar to those on Mars. The research has significant implications for the search for life beyond Earth, as well as the risk of contaminating other planetary bodies.
Researchers have discovered embedded organic material in a Martian meteorite, suggesting that life could have existed on the Red Planet. The study proposes the presence of active bacteria on Mars and may indicate that there was once life beyond Earth.
Researchers found a single species of bacteria in Laguna Caliente lake water, a toxic environment that resembles ancient Mars hot springs. This discovery may help scientists searching for signs of life on Mars.
A University of Cincinnati geology student, Andrew Gangidine, is developing a marker for ancient bacterial life on Mars to aid NASA's search. He's studying microbial life in silica hot springs at Yellowstone National Park to create a useful indicator of life on the red planet.
Researchers aim to determine when the pause in transcription first appeared in evolution by studying various organisms and plant life. They hope this investigation will help narrow down the origin of the pause, shedding light on how complicated life arose on Earth.
A recent study by Arizona State University Assistant Professor Michael Varnum suggests that humans will likely react positively to the discovery of extraterrestrial life. In three pilot studies, language analysis revealed significantly more positive emotions in coverage of past potential discoveries and participant reactions.
The new instrument uses micro Raman spectroscopy to detect organic compounds and minerals associated with biological activity. It can analyze samples up to 10 centimeters away with high resolution, significantly improving previous instruments.
The article discusses a debate over Mars exploration strategies, with some experts proposing the relaxation of planetary protection policies to expand the search for life on Mars. Current robotic missions may be hindering the discovery of Martian life due to contamination concerns, but easing policies could lead to breakthroughs.
Scientists successfully measured the orbital period of K2-3d with high precision, enabling precise predictions of future transits. This improved forecast accuracy paves the way for searching for extraterrestrial life in the atmosphere of the planet.
Recent findings from the 1976 Viking mission and ongoing research suggest that microbial life on Mars is a possibility worth exploring. The presence of water, complex organic molecules, and methane in the Martian environment support a biological explanation for the results of the Viking Labeled Release experiment.
According to new theoretical work, life on Earth is actually premature from a cosmic perspective. The chances of life growing much higher in the distant future due to star lifetimes were found to be 1000 times higher than now. Scientists recommend studying nearby red dwarf stars and their planets for signs of habitability.
A new theory suggests that life on other planets would become extinct quickly due to unstable planetary environments. The Gaian Bottleneck model proposes that most fossils in the universe are from extinct microbial life, not complex species like dinosaurs or humans.
Researchers explore Earth's most extreme lifeforms to predict what life could be like elsewhere in the universe. They suggest water-hydrogen peroxide mixtures for Mars-like environments and liquid hydrocarbons for Titan-like planets, with organisms adapting to frigid temperatures and slow metabolisms.
Researchers at the University of Kansas are working to improve the detection of life on Mars by combining Raman spectroscopy with gas chromatography/mass spectroscopy. They aim to analyze rocks from Earth similar to those found on Mars to strengthen evidence collection, as conditions on the Martian surface are inhospitable.
Scientists discuss alternative chemistries of life, exploring possibilities beyond Earth, at the AAAS 2015 Panel. Researchers aim to unravel complex interplay of planetary and biological evolutionary networks.
Researchers at EPFL have created a highly sensitive motion detector that can detect the movement of microorganisms, including bacteria and yeast, without prior knowledge of their chemistry. The system uses a nano-sized cantilever to capture vibrations caused by living cells, making it suitable for detecting life on other planets.
Researchers from the University of Zurich successfully tested DNA's ability to survive extreme conditions, including space travel and re-entry. The study found that DNA molecules were still able to transfer genetic information to bacterial cells after being launched into space and back.
Scientists have found a 'cell-like' structure in a Martian meteorite that once held water, providing further evidence for the possibility of life on Mars. The discovery, published in Astrobiology, suggests that beneath the surface, Mars provides conditions for life to have formed and evolved.
Paul Davies, a renowned cosmologist, questions the conventional notion that there's only one form of life on Earth. He suggests that life might exist in unexpected places, such as extreme environments, and could be undetected due to our limited detection methods.
Researchers mapped large arc-shaped depressions on Jupiter's moon Europa, indicating a shift of 80° in its rotational axis. The findings suggest the presence of an internal liquid ocean, which could support life, and provide independent evidence for this possibility.
A team of scientists discovered cellulose microfibers in ancient salt deposits, estimated to be 253 million years old. This finding suggests that cellulose may have played a role in the development of life on Earth and could potentially serve as a 'paper trail' for searching for life on other planets.
Current drills may find essential signs of life on Mars but can't reach the living cells that could survive in ice at Elysium or recent craters due to radiation levels, scientists say. The team found that drilling depth required for finding living cells is much deeper than current probes can reach.
Scientists discover that desert varnish on rocks in arid environments can bind organic compounds and DNA, making it a potential indicator of life on Mars. The research suggests that Martian desert varnish could contain ancient microbial signatures or chemical signs of past life.
A new study uses racemization, the conversion of an optically active compound to a racemic form, as a potential marker for extraterrestrial life. Researchers also developed more sensitive polarimeters that can detect smaller concentrations of optically active compounds in samples from outer space.
Researchers are creating a chemical guidebook to identify signs of microbial life in Martian rocks. The team, supported by a $900,000 grant, will use advanced mass spectrometer technology and fuzzy logic computer program to analyze spectral images and make decisions about sample selection.
An international team of scientists has successfully tested an integrated Mars life-detection strategy, finding evidence of even a single-cell organism. The experiment used specially adapted instruments to identify organic and mineralogical markers in Arctic hot springs, which resemble Martian environments.
Research by astrobiologist Jack Farmer highlights the significance of microbial ecosystems found in hydrothermal environments, which could be cradles for life on other planets. Discoveries of new forms of life on Earth thrive in extreme environments broaden possibilities for similar life to exist elsewhere.
Researchers found a community of microorganisms thriving in Antarctica's Lake Bonney and several other lakes. The microbes can survive in an environment similar to Popsicles, using sunlight to create pockets of liquid water.