| One magnetar is only about a light-year from the black hole at the center of the Milky Way. |
| One could imagine falling forty-two thousand miles, where one couldn't imagine falling a light-year. |
| In the centre of rich clusters, the stars may be only one light-year apart. |
| If we could do that within the next five years, we will have made light-year jumps in what we can do. |
| Recently, quasars have been revealed as being the nuclei of active galaxies, and, their diameter is estimated to be no larger than 1 light-year. |
| Our task was easy, because we were about half a light-year from the sun. |
