Life-freindly planets can rather exist in the neighbourhood of metal-poor stars, as study of the Max Planck Institutes for Solars System Research and for Chemistry shows. These stars emit more high energy UV radiation which favours the formation of a life protecting atmosphere.
been shown to orbit, temperatures range from about 5,000 to about 6,000 degrees Celsius
Die Messdaten des ballongetragenen Sonnenobservatoriums Sunrise III machen kleinste Details auf der Sonnenoberfläche sichtbar.
Plasma aus dem Sonneninneren aufsteigt, sowie die dunkleren und einige hundert Grad Celsius
The star Kepler-160 is probably orbited by a planet less than twice the size of the Earth with a star-planet distance that could permit planetary surface temperatures conducive to life. The newly discovered exoplanet, which was found by a team of scientists led by the Max Planck Institute for Solar System Research (MPS) in Göttingen is more than just another potentially habitable world. One of the key properties making it resemble the Sun-Earth system more than any other previously known world, is its Sun-like host star. Most of the Earth-like exoplanets known so far are in orbit around a faint red dwarf star emitting their energy mostly as infrared radiation rather than as visible light. The light shed on KOI-456.04 by its Sun-like host star, however, is very much like the daylight seen on our home planet. Moreover, the orbital period of KOI-456.04 around its Sun-like star is almost identical to an Earth year.
Its radius of 1.1 solar radii, its surface temperature of 5200 degrees Celsius (300
Rho Ophiuchi wäre eine Goldgrube für Friseure: In dem 400 Lichtjahre entfernten Sternentstehungsgebiet haben Astronomen jetzt erstmals Moleküle von Wasserstoffperoxid nachgewiesen. Diese Flüssigverbindung aus Wasserstoff und Sauerstoff wird zum Bleichen von Haaren benutzt. Die Forscher interessiert allerdings etwas anderes: Wie hat sich Wasser, das wohl wichtigste Molekül für die Entstehung von Leben, im Universum gebildet?
Ophiuchi im Sternbild Schlangenträger befinden sich extrem kalte (minus 250 Grad Celsius
The search for new energy sources to power mankind’s increasing needs is currently a topic of immense interest. Hydrogen-powered fuel cells are considered one of the most promising clean energy alternatives. While intensive research efforts have gone into developing ways to harness hydrogen energy to fuel our everyday lives, a natural example of a living hydrogen-powered ‘fuel cell’ has gone unnoticed. During a recent expedition to hydrothermal vents in the deep sea, researchers from the Max Planck Institute of Marine Microbiology and the Cluster of Excellence MARUM discovered mussels that have their own on-board ‘fuel cells’, in the form of symbiotic bacteria that use hydrogen as an energy source. Their results, which appear in the current issue of Nature, suggest that the ability to use hydrogen as a source of energy is widespread in hydrothermal vent symbioses.
energy-laden seawater gushes back out into the ocean at temperatures of up to 400 degrees Celsius
Rho Ophiuchi wäre eine Goldgrube für Friseure: In dem 400 Lichtjahre entfernten Sternentstehungsgebiet haben Astronomen jetzt erstmals Moleküle von Wasserstoffperoxid nachgewiesen. Diese Flüssigverbindung aus Wasserstoff und Sauerstoff wird zum Bleichen von Haaren benutzt. Die Forscher interessiert allerdings etwas anderes: Wie hat sich Wasser, das wohl wichtigste Molekül für die Entstehung von Leben, im Universum gebildet?
Ophiuchi im Sternbild Schlangenträger befinden sich extrem kalte (minus 250 Grad Celsius
The search for new energy sources to power mankind’s increasing needs is currently a topic of immense interest. Hydrogen-powered fuel cells are considered one of the most promising clean energy alternatives. While intensive research efforts have gone into developing ways to harness hydrogen energy to fuel our everyday lives, a natural example of a living hydrogen-powered ‘fuel cell’ has gone unnoticed. During a recent expedition to hydrothermal vents in the deep sea, researchers from the Max Planck Institute of Marine Microbiology and the Cluster of Excellence MARUM discovered mussels that have their own on-board ‘fuel cells’, in the form of symbiotic bacteria that use hydrogen as an energy source. Their results, which appear in the current issue of Nature, suggest that the ability to use hydrogen as a source of energy is widespread in hydrothermal vent symbioses.
energy-laden seawater gushes back out into the ocean at temperatures of up to 400 degrees Celsius
Rho Ophiuchi would have been a gold mine for hairdressers. Astronomers have now detected molecules of hydrogen peroxide for the first time in this stellar nursery 400 light years away. This liquid compound of hydrogen and oxygen is used to bleach hair. The researchers are interested in another aspect, however. How does water, life’s most important molecule, form in interstellar space?
the serpent bearer constellation and contains extremely cold (minus 250 degrees Celsius
Rho Ophiuchi would have been a gold mine for hairdressers. Astronomers have now detected molecules of hydrogen peroxide for the first time in this stellar nursery 400 light years away. This liquid compound of hydrogen and oxygen is used to bleach hair. The researchers are interested in another aspect, however. How does water, life’s most important molecule, form in interstellar space?
the serpent bearer constellation and contains extremely cold (minus 250 degrees Celsius
In kalten interstellaren Gaswolken kommen Blausäure und die wesentlich energiereichere Isoblausäure überraschenderweise in nahezu gleichen Mengen vor. Wie es dazu kommt, haben Wissenschaftler des Max-Planck-Instituts für Kernphysik mit Experimenten im Heidelberger Ionenspeicherring aufgeklärt. Bei der interstellaren Synthese entsteht zunächst eine heiße Mischform, aus der beide Isomere gleich häufig hervorgehen.
sie entsprechen in interstellaren Wolken einer Temperatur von rund minus 260 Grad Celsius
