Galaxies sometimes fling stars into intergalactic space at speeds beyond imagination. These stars, known as hypervelocity stars, move faster than the force needed to escape a galaxy's gravity and are pushed out by phenomena like the supermassive black hole at a galaxy's center. #space #galaxy | Future Worlds

#ESATech image of the week: hyper-velocity impact testing at 7 km/s - shooting an aluminium slug through candidate spacecraft shielding at Germany's Fraunhofer Institute for High-Speed Dynamics: http://www.esa.int/spaceinimages/Images/2018/02/Hypervelocity_impact_testing | ESA - European Space Agency