| Messier 99 |
Article Index for Messier |
Website Links For Messier |
Information AboutMessier 99 |
| CATEGORIES ABOUT MESSIER 99 | |
| spiral galaxies | |
| messier 099 | |
| unbarred spiral galaxies | |
| virgo cluster | |
| coma berenices constellation | |
| messier objects | |
| 099 | |
| ngc objects | |
| ugc objects | |
| 07345 | |
| pgc objects | |
| 39578 | |
Messier 99 (also kown as '''''NGC 4254''''' or '''''M99''''' for short, nicknamed '''''Coma Pinwheel Galaxy''''') is a Spiral Galaxy approximatly 60 Million Light-year s away in the Constellation Coma Berenices . It was discovered by Pierre Méchain in 1781 . The galaxy has a normal looking arm and an extended arm that is less tightly wound. A bridge of neutral hydrogen gas links NGC 4254 with VIRGOHI21 . The gravity from the Dark Galaxy VIRGOHI21 appears to have distorted M99 and drawn out the gas bridge, as the two galaxy-sized objects have a close encounter, before they go their separate ways. It is expected that the drawn out arm will relax to match the normal arm once the encounter is over. SEE ALSO EXTERNAL LINKS
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