Blue space nebula

Blue space nebula

Blue space nebula as abstract background

Posted by Renato Gurgel on 2011-01-10 01:27:19

Tagged: , blue , purple , magenta , nebula , star , space , night , astronomy , field , way , milky , bright , galaxy , fractal , backgrounds , sky , light , outer , glowing , dark , science , dust , infinity , awe , abstract , cluster , looking , forecasting , deep , glitter , rendering , black , computer , illustration , swirl , alien , ethereal , eternity , cosmos , astral , natural , fantasy

Milky Way

Milky Way

The Milky Way is the galaxy that contains our Solar System. The Milky Way is a barred spiral galaxy some 100,000–120,000 light-years in diameter, which contains 100–400 billion stars. It may contain at least as many planets as well. The Solar System is located within the disk, about 27,000 light-years away from the Galactic Center, on the inner edge of one of the spiral-shaped concentrations of gas and dust called the Orion Arm. The stars in the inner ≈10,000 light-years form a bulge and one or more bars that radiate from the bulge. The very center is marked by an intense radio source named, Sagittarius A*, which is likely to be a supermassive black hole. Stars and gases at a wide range of distances from the Galactic center orbit at approximately 220 kilometers per second. The constant rotation speed contradicts the laws of Keplerian dynamics and suggests that much of the mass of the Milky Way does not emit or absorb electromagnetic radiation. This mass has been given the name “dark matter”. The rotational period is about 240 million years at the position of the Sun. The Galaxy as a whole is moving at a velocity of approximately 600 km per second with respect to extragalactic frames of reference. The oldest known star in the Galaxy is at least 13.6 billion years old and thus must have formed shortly after the Big Bang. Surrounded by several smaller satellite galaxies, the Milky Way is part of the Local Group of galaxies, which forms a subcomponent of the Virgo Supercluster.

Posted by pcbackup154 on 2014-06-17 16:27:25

Tagged: , abstract , airglow , argentina , astrophotography , canon , computer , deepsky , dream , galaxy , high , landscape , light , map , meade , mendoza , milkyway , music , nature , night , nightglow , nightphotography , nikon , photoshop , planet , process , stacker , stars , sun , time , way

Telescope on the grass Under the Stars Astronomy

Telescope on the grass Under the Stars Astronomy

Telescope on the grass Under the Stars background

Astronomy (from Greek: αστρονομία) is a natural science that studies celestial objects and phenomena. It applies mathematics, physics, and chemistry, in an effort to explain the origin of those objects and phenomena and their evolution. Objects of interest include planets, moons, stars, galaxies, and comets; while the phenomena include supernova explosions, gamma ray bursts, and cosmic microwave background radiation. More generally, all astronomical phenomena that originate outside Earth’s atmosphere are within the purview of astronomy. A related but distinct subject, physical cosmology, is concerned with the study of the Universe as a whole.
Astronomy is the oldest of the natural sciences. The early civilizations in recorded history, such as the Babylonians, Greeks, Indians, Egyptians, Nubians, Iranians, Chinese, and Maya performed methodical observations of the night sky. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation, observational astronomy and the making of calendars, but professional astronomy is now often considered to be synonymous with astrophysics.
During the 20th century, the field of professional astronomy split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects, which is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena. The two fields complement each other, with theoretical astronomy seeking to explain the observational results and observations being used to confirm theoretical results.
Astronomy is one of the few sciences where amateurs can still play an active role, especially in the discovery and observation of transient phenomena. Amateur astronomers have made and contributed to many important astronomical discoveries, such as finding new comets.

Posted by scienceandtechnologysu on 2017-07-12 00:24:17

Tagged: , abstract , astrology , astronomy , atmosphere , background , black , blue , bright , clear , clouds , cluster , color , cosmos , deep , dusk , earth , explosion , fantasy , galaxy , graphic , idyllic , illustration , light , many , moon , nebula , night , open , orbit , outer , planet , pleiades , pure , science , shine , shiny , sky , solar , space , sparkle , star , starry , stars , grass , telescope , twinkle , universe , wallpaper , way , white , Thailand , Planets , Gases , Universal , dust , Dark , matter

Angel Keys

Angel Keys

By Angel

Posted by Angel Keys on 2011-03-11 23:06:03

Tagged: , blue , purple , magenta , nebula , star , space , night , astronomy , field , way , milky , bright , galaxy , fractal , backgrounds , sky , light , outer , glowing , dark , science , dust , infinity , awe , abstract , cluster , looking , forecasting , deep , glitter , rendering , black , computer , illustration , swirl , alien , ethereal , eternity , cosmos , astral , natural , fantasy , Angel , Keys , daslu , ótica , ventura

Blue space nebula

Blue space nebula

Blue space nebula as abstract background

Posted by thangcphan on 2012-06-08 08:21:07

Tagged: , blue , purple , magenta , nebula , star , space , night , astronomy , field , way , milky , bright , galaxy , fractal , backgrounds , sky , light , outer , glowing , dark , science , dust , infinity , awe , abstract , cluster , looking , forecasting , deep , glitter , rendering , black , computer , illustration , swirl , alien , ethereal , eternity , cosmos , astral , natural , fantasy

Blue space nebula

Blue space nebula

Blue space nebula as abstract background

Posted by thevampiredr on 2011-05-19 19:11:52

Tagged: , blue , purple , magenta , nebula , star , space , night , astronomy , field , way , milky , bright , galaxy , fractal , backgrounds , sky , light , outer , glowing , dark , science , dust , infinity , awe , abstract , cluster , looking , forecasting , deep , glitter , rendering , black , computer , illustration , swirl , alien , ethereal , eternity , cosmos , astral , natural , fantasy