Tag Archives: exogenous life

Life on Mars: Curiosity finds a promising lake bed

After about two decades of poking around Mars, it’s clear that scientists don’t expect to find life, certainly not on the surface [SciTechStory: Life on Mars: If it exists, is below the surface]. There are no Martian yetis, or if any life at all, nothing bigger than a bacteria – probably living deep below the […]
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Earth bacteria can survive in a least some Mars conditions

To quote from a movie (Jurassic Park), “Life finds a way.” So far, there is no sign of life on Mars. Water, yes, but not life. At least at or near the surface, Mars is a very inhospitable place for life. It is dry, so dry the Sahara is a sauna by comparison. It is […]
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New evidence for liquid water on Mars

The possible seasonal rills of running water on Mars……Credit: NASA, JPL Earth has lots of liquid water, like oceans of it – though salty. Why would people be excited by briny water on Mars? However, for those intrepid, dreaming human beings who think of traveling to Mars and one day pitching camp there, the news […]
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Salt water ocean on Enceladus

It could be called the briny deep, but that might be pushing it a little. Nevertheless, a new study confirming a salty ocean under the icy surface of Saturn’s moon, Enceladus, is significant. Further analysis of data from the Cassini space probe led by researchers at the University of Heidelberg (Germany) and the University of […]
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NEWS: Short List

Restraining and studying molecules, two at a time – Photonics | The usual way of studying how molecules react to a catalyst is to put them into a solution and observe – typically huge numbers of reactions. This works to a point, the point being the amount of detail that can be surmised from so […]
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Mars water: What’s all the fuss?

Seventh in a series of posts inspired by ten topics in ‘Insights of the Decade’ from the December 17, 2010 special issue of Science Magazine The topics are: Inflammation, climatology, tricks of light, alien planets, the microbiome, cell reprogramming, Martian water, the DNA time machine, cosmology and epigenetics. The original articles are now behind a […]
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This is the decade: Alien planets, alien life

Fourth in a series of posts inspired by ten topics in ‘Insights of the Decade’ from the December 17, 2010 special issue of Science Magazine The topics are: Inflammation, climatology, tricks of light, alien planets, the microbiome, cell development, Martian water, the DNA time machine, cosmology and epigenetics. The original articles are now behind a […]
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Almahata Sitta: A meteorite suggests a new way to form amino acids

Asteroid collision, NASA Hubble Space Telescope picture….credit: NASA, ESA, D. Jewitt Finding amino acids, the building blocks of life, in meteorites is not new. Finding them in a meteorite that is a fragment of an asteroid collision, a piece formed at more than two thousand degrees Fahrenheit (1100 degrees Celsius) – now that makes astrobiologists […]
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Three-hundred sextillion stars: Who wants to bet against life on other planets?

Life: In part it’s a numbers game. The possibility of life on other planets (or moons, or other space objects) presumably increases with greater numbers. This is the quantitative argument. So, when Yale University (USA) scientists led by Pieter van Dokkum used updated information on the composition of star-types that make up other galaxies than […]
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Mars rover Spirit: Trapped but contributing to water story

Disturbed soil surrounding the Mars rover Spirit…….Credit: NASA/JPL-Caltech/Cornell A heading for this story could be: Dead Spirit reports from a moist grave. Almost technically correct but too much wordplay. The reality is more prosaic and potentially more important. The issue is water on Mars. Evidence is overwhelming that Mars had, as in two billion years […]
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