| 14 May 08 |  | G1.9+0.3 | The most recent supernova in our Galaxy has been discovered by tracking the rapid expansion of its remains. |
| 28 Apr 08 |  | NGC 6121 | A globular cluster located in the Milky Way galaxy. |
| 28 Apr 08 |  | NGC 6397 | A globular cluster located in the Milky Way galaxy. |
| 16 Apr 08 |  | Sagittarius A* | Clouds of gas near the central black hole brightened and faded quickly in X-ray light. |
| 09 Apr 08 |  | DG Tau | A young star in the Taurus region of star formation, about 450 light years from Earth. |
| 20 Mar 08 |  | SNR 0509-67.5 | A supernova remnant with a light echo in the Large Magellanic Cloud. |
| 12 Mar 08 |  | N132D | A supernova remnant, about 3,000 years old, in the Large Magellanic Cloud. |
| 21 Feb 08 |  | Kes 75 | This deep Chandra X-ray Observatory image shows the supernova remnant Kes
75, located almost 20,000 light years away. |
| 13 Feb 08 |  | SN 2007on in NGC 1404 | A supernova that appeared in the galaxy NGC 1404 in late 2007. |
| 05 Feb 08 |  | NGC 1132 | An elliptical galaxy at a distance of about 300 million light years. |
| 23 Jan 08 |  | Westerlund 2 | A star cluster about 20,000 light years from Earth. |
| 10 Jan 08 |  | NGC 4374
(M84) | A sample of nine galaxies each containing supermassive black holes in their centers. |
| 10 Jan 08 |  | NGC 4552 | A sample of nine galaxies each containing supermassive black holes in their centers. |
| 10 Jan 08 |  | NGC 4472 | A sample of nine galaxies each containing supermassive black holes in their centers. |
| 10 Jan 08 |  | NGC 5846 | A sample of nine galaxies each containing supermassive black holes in their centers. |
| 09 Jan 08 |  | Centaurus A | An active galaxy at a distance of 10 million light years from Earth. |
