extra-terrestrial radiation

См. также в других словарях:

• Terrestrial Planet Finder — Infrared interferometer concept Le Terrestrial Planet Finder (TPF, « Chercheur de planète terrestre ») était un projet de système de télescope de la NASA pour l horizon 2015 2020, annulé en 2007. Il s agissait d une suite de deux… …   Wikipédia en Français

• Background radiation — This article is about ionizing radiation. For microwave background radiation from space, see Cosmic background radiation and cosmic background. Thermal radiation emitted by Earth is not considered in this category because it is not ionizing.… …   Wikipedia

• Ionizing radiation — consists of highly energetic particles or waves that can detach (ionize) at least one electron from an atom or molecule. Ionizing ability depends on the energy of the impinging individual particles or waves, and not on their number. A large flood …   Wikipedia

• Habitable zone — Goldilocks planet redirects here. For the planet initially nicknamed Goldilocks , see 70 Virginis b. For other uses, see Goldilocks (disambiguation). Goldilocks Zone and Comfort zone (astronomy) redirect here. For other uses, see Comfort zone… …   Wikipedia

• Search for Extraterrestrial Intelligence — SETI ist das Akronym für “Search for Extraterrestrial Intelligence” (deutsch: „Suche nach außerirdischer Intelligenz“). Damit bezeichnet man die Suche nach außerirdischen Zivilisationen. Seit 1960 werden verschiedene wissenschaftliche… …   Deutsch Wikipedia

• Rare Earth hypothesis — In planetary astronomy and astrobiology, the Rare Earth hypothesis argues that the emergence of complex multicellular life (metazoa) on Earth required an improbable combination of astrophysical and geological events and circumstances. The term… …   Wikipedia

• Search for extraterrestrial intelligence — The search for extraterrestrial intelligence is sometimes abbreviated as SETI. For other uses, see SETI (disambiguation). Screen shot of the screensaver for SETI@home, a distributed computing project in which volunteers donate idle computer power …   Wikipedia

• Panspermia — (Greek: πανσπερμία from πᾶς/πᾶν (pas/pan) all and σπέρμα (sperma) seed ) is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids and planetoids.[1] Panspermia proposes tha …   Wikipedia

• Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …   Universalium

• List of astronomy acronyms — This is a compilation of acronyms commonly used in astronomy. Most of the acronyms are drawn from professional astronomy and are used quite frequently in scientific publications. However, a few of these acronyms are frequently used by the general …   Wikipedia

• Ufology — is a neologism coined to describe the collective efforts of those who study unidentified flying object reports and associated evidence. Not all ufologists believe that UFOs are necessarily extraterrestrial spacecraft, or even that they are… …   Wikipedia