This giant spiral disk of stars, dust and gas is 170,000 light-years across, almost twice the diameter of our Milky Way galaxy. M101 is estimated to contain at least one trillion stars.
| Camera Software | : | Adobe Photoshop CS2 Macintosh |
| Image Width | : | 15852 |
| Image Height | : | 12392 |
| Number of Bits Per Component | : | 8, 8, 8 |
| Compression Scheme | : | Unknown |
| Pixel Composition | : | RGB |
| Image Orientation | : | Top, Left-Hand |
| Horizontal Resolution | : | 300 dpi |
| Vertical Resolution | : | 300 dpi |
| Image Data Arrangement | : | Chunky Format |
| Image Created | : | 2006:02:27 18:04:56 |
| Color Space Information | : | sRGB |
| Number of Components | : | 3 |
| Resolution Unit | : | i |
| Exif IFD Pointer | : | 256 |
| Offset to JPEG SOI | : | 394 |
| Bytes of JPEG Data | : | 4802 |