The Gamma Ray Sky
GRBs – Gamma ray bursts – thinking about these blasts of energy can really blow your mind. Just think, something happened to give off so much energy that we still a lot of it at earth, even after it has traveled billion of light years.
It is always fun to see people contributing to science, especially when they are not scientists. Try the new Galaxy Zoo Quench. You classify galaxies but then also help in the analysis. There may also be dialog with scientists.