20 November 2016 | Galactic Beacon


Credit & copyright: Matt Aust | Click image to enlarge

Image Data

Location: Mallorca, Spain
Camera: Sony A7s (JTW Astro Mod)
Optics: Zeiss Batis 25mm f2.0
Filter: Marumi Redhancer Filter
Exposure: Panorama of 6 x 13s, f2.0 @ ISO 8.000

This stunning image shows the Milky Way galaxy above Mallorca, Spain. Also visible -amongst others- are the Pleiades (the cluster to the right), the California Nebula (left of the Pleiades) and the Heart & Soul Nebulae.

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias, literally “milky”, a reference to the Milky Way.

Galaxies range in size from dwarfs with just a few billion (109) stars to giants with one hundred trillion (1014) stars, each orbiting its galaxy’s center of mass. Galaxies are categorized according to their visual morphology as ellipticalspiral and irregular.

Many galaxies are thought to have black holes at their active centers. The Milky Way’s central black hole, known as Sagittarius A*, has a mass four million times greater than the Sun.

As of March 2016, GN-z11 is the oldest and most distant observed galaxy with a comoving distance of 32 billion light-years from Earth, and observed as it existed just 400 million years after the Big Bang.


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