Scientists now consider it unlikely the universe has an end a region where the galaxies stop or where there would be a barrier of some kind marking the end of space. The number could lead to a better estimate of how massive the galaxy is and how many other galaxies orbit it.In either case, you could never get to the end of the universe or space. New work finds that the Milky Way stretches nearly 2 million light-years across, more than 15 times wider than its luminous spiral disk. Does the influence of gravity extend out forever Galaxies look stationary, so why do scientists say that they rotate Have aliens ever visited earth Have.Our galaxy is a whole lot bigger than it looks. The urgency to establish humanity as a multi-planet species. Once the exclusive province of science fiction stories and films, the subject of space colonization has rapidly moved several steps closer to becoming a reality thanks to major advances in rocket propulsion and design, astronautics and astrophysics, robotics and medicine.

For instance, the larger the Milky Way, the more massive it is вЂ” and the more galaxies there should be revolving around it, says Rosemary Wyse, an astronomer at Johns Hopkins University who was not part of the new work. The farthest such stars will be very dim, but future observations should be able to find them.The measurement should also help astronomers tease out other galactic properties. Astronomers could also search for individual stars out at the boundary, says Mike Boylan-Kolchin, an astrophysicist at the University of Texas at Austin who was not involved with the study. вЂњThe edge of the stars is very sharp, almost like the stars just stop at a particular radius.вЂќIn the future, astronomers can refine the location of the Milky WayвЂ™s edge by discovering additional small galaxies nearby.

Does Space Have An End