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Den nære astronomi

fysik

TermDefinition
Hvad er en exoplanet? En exoplanet eller en extrasolar er en planet der kredser om en anden stjerne end Solen./En planet udenfor vores solsystem.
Hvad er en AE? Astronomisk enhed. Middelafstanden fra Jorden til Solen 1,495*10^8
Hvad er et geocentrisk verdensbillede? Verdensbilledet, hvor man tror, Jorden var i centrum.
Hvad er det heliocentriske verdensbillede? Verdensbilledet, hvor man tror, Solen er i centrum.
Hvilket område er den beboelige zone i vores solsystem, målt i AE? 0,84AE-1,7AE
Hvad er solvind? Solens atmosfærren er over en million grader. Den høje temperatur svulmer Solens atmosfære op, strækker sig langt ud i rummet. Sammen-hængende strøm af ioniseret gas fra Solen ud i rummet i alle retninger. Denne strøm af ladede partikler kaldes solvinden
Hvilken betydning har et magnetfelt for en planet? En planets magnetfelt beskytter dens atmosfære mod solvind, som ellers ville få gasserne fra planeten til at forsvinde.
Created by: 905124902982629