SpaceThe Milky Way seems to be missing nearly half of its regular matter Measurements of a blast of radio waves passing through our galaxy have shown that the Milky Way's proportion of visible matter is 40 per cent lower than the rest of the universe News
SpaceA strange barrier is keeping cosmic rays out of the Milky Way’s centre The very centre of the Milky Way has an unexpectedly low density of cosmic rays compared with the rest of the galaxy, which means that they are somehow being kept out News