home *** CD-ROM | disk | FTP | other *** search
- The beautiful face-on galaxy, M101 was
- discovered in 1781. It is estimated to
- have a mass equal to about 16
- billion of our suns or only 10% of the
- Milky Way. This makes it one of the
- lowest density galaxies known. M101 is
- also believed to be about 90,000 light
- years in diameter. A total of 3
- supernovae have been observed in M101, in
- the years 1903, 1951 and 1970.