Cassiopeia - Cathérine Lundgrenさんのイラストまとめ

The Galilean Moons, Io, Europa, Ganymede and Callisto are the 4 largest moons of Jupiter, discovered by Galileo Galilei between Dec 1609 and Jan 1610. The 1st objects that have been found orbiting another planet.
Ganymede is larger than planet Mercury 🔭⭐

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The Orion Nebula is part of the star constellation Orion, to find south of it. The nebula is about 1350 LJ away and has an extension of about 24 light-years. It consists primarily of hydrogen. Brightest star is Orionis C1, 200,000 times brighter as our sun!

Do you know that visible matter makes up only 4.9 % of universe? 68.3 % is dark energy, 26.8 % is dark matter. Unknown what they consist of.

The "Black Eye Galaxy" (NGC 4826). It consists of 2 rotating discs and is about 24 mil light-years away from earth.

Centaurus A is one of the brightest objects that can be seen from earth, 10 - 16 mil. light years away and is a strong Gamma & X-ray source.

The Eagle Nebula. It consists primarily of hydrogen and is about 7000 light years away from earth.

René Magritte: Le Thérapeute 1937.

Creepy places