Something out of the worldPosted by Alejandro


A Galaxy, is a gravitationally bound system of stars, stellar remnants, interstellar gas and dust, and dark matter. The word galaxy is derived from the Greek galaxias, literally "milky", a reference to the Milky Way. Examples of galaxies range from dwarfs with just a few thousand (103) stars to giants with one hundred trillion (1014) stars, each orbiting their galaxy's own center of mass. Galaxies can be categorized according to their visual morphology, including elliptical,[4] spiral, and irregular|. Many galaxies are believed 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 that of our Sun. As of May 2015, EGS-zs8-1 is the most distant known galaxy, estimated to be 13.1 billion light-years away and to have 15% of the mass of the Milky Way

There are approximately 170 billion (1.7 × 1011) galaxies in the observable universe. Most of the galaxies are 1,000 to 100,000 parsecs in diameter and usually separated by distances on the order of millions of parsecs (or megaparsecs). The space between galaxies is filled with a tenuous gas with an average density less than one atom per cubic meter. The majority of galaxies are gravitationally organized into associations known as galaxy groups, clusters, and superclusters. At the largest scale, these associations are generally arranged into sheets and filaments that are surrounded by immense voids.

Latest Updates

August 6, 2015Posted by Alejandro


I added additional information in my blog (located next to homepage), there you will able to find out more about galaxies and natural phenomenon as well as dangerous part of the universe. Black Hole, found on space,as well a very dangerous phenomenon that is you suck by the this hole you will be there forever or in very long period of time that you will eventually end dead. This is the result of dead star that explodes and create a black hole. This sucks up all nearby heavely bodiea, be it a planet or a asteroid, it will suck up anything nearby.

Did you know that the star Betelgeuze will once be a second Sun in the sky?

A TriviaPosted by Alejandro


The star Betelgeuze is about to explode and become a Supernova. Betelgeuze is at a distance of 600 light-years and is one of the brightest stars in the sky. The moment Betelgeuze is going to explode Is not exactly predictable. It can happen within 5 years, but it can also last another 10.000 years. Moreover Betelgeuzes light travels about 600 years to reach Earth. It may well be that Betelgeuze already exploded, but that the light from the Supernova did not reach us yet. When Betelgeuze becomes a Supernova, this will be a unique and spectacular event. Betelgeuze may produce more light than the full moon. This may cause a few weeks of daylight 24 hours a day. This is only the case when Betelgeuze explodes during wintertime. If it happens during the summer, there will be 2 Suns in the sky.