Abstract artwork of MACHO dark matter objects
Numéro d’image : 11887121
| Dark matter. Artwork of dark matter made of MACHOs (Massive Astronomical Compact Halo Objects) with a spiral galaxy at bottom left. The MACHOs shown are a brown dwarf (top right),black hole (bottom right),a planet (red,upper centre),white dwarfs (white,upper centre and centre left),a pulsar neutron star (top left,with gas jets) and aster- oids. Cosmologists use dark matter to explain why the stars in a galaxy stay together. Cosmologists estimate that only about 10% of the gravitational force holding galaxies together comes from visible mass such as stars. Some think that the other 90% comes from dark matter made of dim objects in the outer regions of a galaxy (its halo) | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Cook, Lynette |
| Taille de l’image : | 5024 px × 3365 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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