These two dancing brown dwarfs waltz across the sky over the course of three years, as seen by the Hubble Space Telescope. This image is a stack of 12 images taken by the telescope using high-precision astrometry.
Three newly-discovered streams arcing high over the Milky Way Galaxy are remnants of cannibalized galaxies and star clusters. The streams are between 13,000 and 130,000 light-years distant from Earth and extend over much of the northern sky. Two of the newly discovered streams are almost certainly the remains of ancient star clusters. The third stream is spread over a much larger region of the sky, and is most likely the scattered remains of a dwarf galaxy.
Milky Way's fastest stars could be runaways from another galaxy
Learn about Milky Way's fastest stars could be runaways from another galaxy http://ift.tt/2tLE0zq on www.Service.fit - Specialised Service Consultants.
The Tycho supernova remnant in the Milky Way, produced by the explosion of a white dwarf star in our galaxy. Low-energy X-rays (red) show expanding debris from the supernova explosion and high energy X-rays (blue) show the blast wave, a shell of extremely energetic electrons. These high-energy X-rays show a pattern of X-ray "stripes" never seen in a supernova remnant.