The discovery of the exoplanets was led by astronomers from Germany's University of Göttingen, working through the CARMENES project. The project's aim is to seek out worlds orbiting within the habitable zones of small red dwarf stars. The habitable zone around any star is the distance at which a planet can orbit where it is neither too hot nor too cold for liquid water to persist on its surface. The presence of liquid water, as we are all intimately aware, is essential for life to evolve. In the case of Teegarden's habitable zone, its exoplanets need to orbit very close to the star as it's so cool (it has a surface temperature of about 4,900 degrees Fahrenheit or 2,700 degrees Celsius). … [Read more...] about Two for Teegarden: Pint-sized Star System Discovered Right Next Door
Nasa water on mars
When the alcohol begins to do its work on bacteria, for instance, the injury to the cell can cause the bacteria to form a protective shell. That's bad. Viruses don't form those protective shells, but higher concentrations of alcohol evaporate very quickly — maybe before it penetrates the virus' outer walls. That's also bad. … [Read more...] about What’s the Difference Between Ethyl Alcohol and Isopropyl Alcohol?