ScienceDaily: Astronomy News |
- Analyzing sun-like stars that eat Earth-like planets
- Earth organisms survive under Martian conditions: Methanogens stay alive in extreme heat and cold
- 'Smoking gun' evidence for theory that Saturn's collapsing magnetic tail causes auroras
| Analyzing sun-like stars that eat Earth-like planets Posted: 19 May 2014 06:50 PM PDT Astronomers have developed a model that estimates the effect that ingesting large amounts of the rocky material from which 'terrestrial' planets like Earth, Mars and Venus are made has on a star's chemical composition and has used the model to analyze a pair of twin stars which both have their own planets. |
| Earth organisms survive under Martian conditions: Methanogens stay alive in extreme heat and cold Posted: 19 May 2014 08:42 AM PDT New research suggests that methanogens -- among the simplest and oldest organisms on Earth -- could survive on Mars. Methanogens, microorganisms in the domain Archaea, use hydrogen as their energy source and carbon dioxide as their carbon source, to metabolize and produce methane, also known as natural gas. Methanogens live in swamps and marshes, but can also be found in the gut of cattle, termites and other herbivores as well as in dead and decaying matter. |
| 'Smoking gun' evidence for theory that Saturn's collapsing magnetic tail causes auroras Posted: 19 May 2014 06:04 AM PDT Researchers have captured stunning images of Saturn's auroras as the planet's magnetic field is battered by charged particles from the Sun. |
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