The visible space is big, complex and can be incredibly beautiful.The sky (or celestial dome) is everything that lies a certain distance above the surface of the Earth, including the atmosphere and outer space.
The Eridanus Void. This area shows almost no signs of cosmic matter, meaning no stars, planets, solar systems or clouds of cosmic dust. Researchers couldn't even find dark matter, which is invisible but measurable by matter once present in the region.
Via Hubble: The cosmic "ice sculptures" of the Carina Nebula. Scientists are still trying to explain the beautiful spires.A nebula from Latin: "cloud"is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
It looks like the Phoenix. This is the Ghost Nebula, a reflection nebula in the Cepheus constellation. It is located about 1500 light years away from Earth. Photo credit: T. Rector/University of Alaska Anchorage, H. Schweiker/WIYN and NOAO/AURA/NSF
The Soul Nebula (IC is a fairly large emission nebula in the constellation Cassiopeia. It is often referred to as the “Embryo Nebula” because of its characteristic shape. Its neighbour is IC 1805 (the Heart Nebula). Photo by Azin Dark Skies.