The Lagoon Nebula is known by a few other names: Messier 8, M8, and NGC 6523. This nebula is known as an emission nebula. It is one of only two star forming nebula that can be seen with the unaided eye in the northern latitudes. It is an interstellar cloud that is located in the Sagittarius constellation and it has an H II region. It was discovered by Guilliaume Le Gentil in 1747.
An emission nebula is a cloud of ionized gas that emits light of multiple colors. Usually, the ionization is caused by high-energy photons coming from a hot star(usually more than one star) that is in close approximation. H II regions are a type of emission nebula in which star formation is taking place and young, massive stars are the source of the ionizing photons. These blue stars often emit unimaginable amounts of ultraviolet light that heats the surrounding gas.
Source: Universetoday Credit: NASA, ESA
Enter the Vortex… in Psychedelic Color. This spectacular, vertigo inducing, false-color image from NASA’s Cassini mission highlights the storms at Saturn’s north pole. The angry eye of a hurricane-like storm appears dark red while the fast-moving hexagonal jet stream framing it is a yellowish green. Low-lying clouds circling inside the hexagonal feature appear as muted orange color. A second, smaller vortex pops out in teal at the lower right of the image. The rings of Saturn appear in vivid blue at the top right.
Hal Lasko, better known as Grandpa, worked as a graphic artist back when everything was done by hand. His family introduced him to the computer and Microsoft Paint long after he retired. Now, Grandpa spends ten hours a day moving pixels around his computer paintings. His work is a blend of pointillism and 8-Bit art. Meet 97-year-old Hal Lasko, The Pixel Painter. Director: Josh Bogdan (joshbogdan.com) Director: Ryan Lasko Editor/Writer: Josh Bogdan Director of Photography: Topaz Adizes (topazadizes.com) Original Music: Jarrod Pedone Original Music: Tyler H. Brown hallasko.com
Simulation of gas cloud being ripped apart by the black hole at the centre of the Milky Way (by Eso Observatory)
This simulation shows a gas cloud, discovered in 2011, as it passes close to the supermassive black hole at the centre of the galaxy. Observations with ESO’s Very Large Telescope in 2013 show that the cloud is so stretched that the front part of it has passed the closest point and is travelling away from the black hole at more than 10 million km/h, whilst the tail is still falling towards it.More information and download options:http://www.eso.org/public/videos/eso1…Credit:ESO/S. Gillessen/MPE/Marc Schartmann