Sidereal Day versus Solar Day
Forfatter/Opretter:
Dr. James O'Donoghue under YouTube alias "Interplanetary"
Kredit:
YouTube: Sidereal Day versus Solar Day – View/save archived versions on archive.org and archive.today
Shortlink:
kilde:
størrelse:
1920 x 1080 Pixel (3386686 Bytes)
beskrivelse:
Earth physically rotates in 23hours 56min relative to distant stars – a Sidereal Day, BUT it takes 24hours to rotate relative to the Sun – a Solar Day
The difference? Earth orbits the Sun, so the Sun appears to move (down, in the vid), which means Earth needs +4mins to catch up!
Imagery from: NASA / Solar System Scope processing https://www.solarsystemscope.com/textures/ under CC BY 4.0
NASA ephemeris data: https://ssd.jpl.nasa.gov/horizons/app.html
Licens:
Licensbetingelser:
Creative Commons Attribution 3.0
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