Space & Future...
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Understanding planetary habitability is partly an extrapolation of the Earth 's conditions, as this is the only planet currently known to support life .
An artist's conception shows a terraformed Mars in four stages of development. Terraforming (literally, "Earth-shaping") of a planet , moon , or other body is the hypothetical process of deliberately modifying its atmosphere , temperature , surface topography or ecology to be similar to the biosphere of Earth , in order to make it habitable by humans .
Artist's conception of the process of terraforming Mars.
Astrobiology is the study of the origin , evolution , distribution, and future of life in the universe: extraterrestrial life and life on Earth . This interdisciplinary field encompasses the search for habitable environments in our Solar System and habitable planets outside our Solar System, the search for evidence of prebiotic chemistry , laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in outer space . [ 2 ] Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does. [ 3 ] (The term exobiology is similar but more specific — it covers the search for life beyond Earth, and the effects of extraterrestrial environments on living things.) [ 4 ]
| Français | English | Italiano | Polski | Le tableau ci-dessous donne: Le nom de l'étoile, suivi d'une lettre en minuscule, b, c, d,...: chaque lettre correspond à une planète orbitant autour de l'étoile.
Diagram of a Class C Stellar Engine —to scale—built around a sun like star.
The Kardashev scale is a method of measuring a civilization's level of technological advancement, based on the amount of energy a civilization is able to utilize.
The multiverse (or meta-universe ) is the hypothetical set of multiple possible universes (including the historical universe we consistently experience) that together comprise everything that exists and can exist: the entirety of space , time , matter , and energy as well as the physical laws and constants that describe them. The term was coined in 1895 by the American philosopher and psychologist William James . [ 1 ] The various universes within the multiverse are sometimes called parallel universes .
Drake Vs Fermi...
The Drake equation is a mathematical equation used to estimate the number of detectable extraterrestrial civilizations in the Milky Way galaxy .
We assume that "sufficiently advance" technology will enable us to eventually cross great distances and interact with any life we find there. We also assume that the universe is so vast that some other race has already done this. But, it might not be possible.
Super-Earths ? Hot-Jupiters ? Habitable zones , sun-like stars , Earth-like planets ?
When you do graphics for print in Wired – and then post on your blog about the process – stressing how much attention you pay to the details, then you’re asking for it. Sorry, David McCandless … ( Click the graphic for full-size at Wired and read the blogpost at information is beautiful here ) Your Exoplanet Atlas is full of errors. According to your own description, you have three designers and three researchers working on the project for nine months doing 26 drafts, and yet it takes only a very simple check-up to realize, that this Atlas is not to be trusted.
Space colonization (also called "interstellar colonization", space settlement , or extraterrestrial colonization ) is the concept of permanent human habitation outside of Earth . At the present time, there are many proposals and speculations about the first space colony. [ edit ] Purpose and goal
Cette simulation regroupe les quelque 2 229 candidats exoplanète s découvertes par le satellite américain Kepler autour d'une étoile de la taille du Soleil (cette liste exclut les faux positifs avérés et les planètes en orbite autour de deux étoiles). Ces planètes ont été mises à l'échelle par rapport au rayon de leur étoile hôte (le rayon orbital et la taille d'une planète dont l'étoile est n fois plus petite que le Soleil sont agrandis d'un facteur n ). Leur couleur correspond à leur température estimée, qui varie de -110 à 4500 °C (d u bleu vers le rouge) . Les orbites des planètes internes du Système solaire – Mercure, Vénus, la Terre et Mars – sont visibles à mesure que le champ s'élargit. Presque toutes les candidates se situent à l'intérieur de l'orbite de Mercure !