Spiral galaxy NGC 3370
Numéro d’image : 11754087
| Spiral galaxy NGC 3370,HST image. This galaxy is around 98 million light years from Earth. It has a nucleus of mainly older yellower stars,surrounded by spiral arms containing younger,hotter,bluer stars. This galaxy was home to a type 1a supernova in 1994. Such supernovae have a known brightness,which allows their distance to be calculated. Studying type 1a events in galaxies provides information about the expansion of the universe. This image was taken in 2003 during a survey of Cepheid variable stars in the galaxy,the most distant such stars ever measured at the time. Cepheids provide very accurate distance data | |
| Licence : | Libre de droits |
| Crédit: | Science Photo Library / HUBBLE HERITAGE TEAM / STSCI / ESA / NASA |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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