extra-terrestrial astronomy

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• Terrestrial planet — The terrestrial planets Mercury, Venus, Earth, and Mars, and dwarf planet Ceres. Sizes to scale A terrestrial planet, telluric planet or rocky planet is a planet that is composed primarily of silicate rocks and/or …   Wikipedia

• 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

• Timeline of astronomy — Timeline of astronomy2500 BCMany ancient sites are thought to have astronomical significance, such as the Ancient Egyptian pyramids, Harappan shell instruments, British megaliths, and buildings in China and Latin America.In Lothal, the ancient… …   Wikipedia

• Hebrew astronomy — refers to any astronomy written in Hebrew or by Hebrew speakers, or translated into Hebrew. It also includes an unusual type of literature from the Middle Ages: works written in Arabic but transcribed in the Hebrew alphabet. It includes a range… …   Wikipedia

• Astrology and astronomy — are historically one and the same discipline (Latin: astrologia ), and were only gradually recognized as separate in western 17th century philosophy (the Age of Reason ). Since the 18th century they have come to be regarded as completely separate …   Wikipedia

• Extinction (astronomy) — Extinction is a term used in astronomy to describe the absorption and scattering of electromagnetic radiation by matter (dust and gas) between an emitting astronomical object and the observer. Interstellar extinction also called Galactic… …   Wikipedia

• Arthur C. Clarke — Arthur Clarke redirects here. For other uses, see Arthur Clarke (disambiguation). Sir Arthur C. Clarke, CBE Arthur C. Clarke at his home office in Colombo, Sri Lanka, 28 March 2005 Born 16 December 1917(1917 12 16) …   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 — 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

• 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 — 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