Photo Gallery Farewell Space Telescope

This image made available by NASA shows the runaway star Kappa Cassiopeiae, or HD 2905, center, and its bow shock formed when the magnetic fields and wind of particles flowing off the star collide with the diffuse, and usually invisible, gas and dust that fill the space between stars as it travels. It was captured by the Spitzer Space Telescope. The wave is about 4 light-years ahead of Kappa Cassiopeiae, about the same distance that Earth is from Proxima Centauri, the nearest star beyond the sun. (NASA/JPL-Caltech via AP)