Tomasz Lichota

Tomasz Lichota

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Tomasz Lichota
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Five Planets and the Moon over Australia via NASA http://ift.tt/2bClNx6

NASA Astronomy Picture of the Day 2016 August 16 Five Planets and the Moon over Australia It is not a coincidence that planets line up. That’s because all of the planets orbit the Sun in (nearly) a single sheet called the plane of the ecliptic.

color wavelength

Wavelength: lambda: the distance between any point on a wave and the corresponding point on the next crest (trough) of the wave; distance the wave travels during one cycle; expressed in meters, nanometers, micrometers, picometers m) or angstroms