Blue Planet (7680×4320)
Picture found by the Ditpub “Beautiful World” searcher.
Original was/is available from http://www.wallpapersultrahd.com/ultrahd/blue_planet7680x4320.jpg
Back to school with the following…
Blue is the colour between violet and green on the optical spectrum of visible light. Human eyes perceive blue when observing light with a wavelength between 450 and 495 nanometres.
A planet (from Ancient Greek ἀστήρ πλανήτης (astēr planētēs), or πλάνης ἀστήρ (plánēs astēr), meaning “wandering star”) is an astronomical object orbiting a star, brown dwarf, or stellar remnant that
Published by DitPub on 2015-10-15 2:05:09, under the category “Beautiful World”
DitPub is a for-learning-&-fun-bot by Artur Marques