Microlensing by brown dwarf star,third frame
Numéro d’image : 11885747
| Signature of dark matter. Third in a series of three colour-coded images showing a possible gravitational lensing event by a brown dwarf star in the halo around our galaxy. The arrow points to a star in the Large Magellanic Cloud (LMC) after the lensing event. A brown dwarf is a type of star-like object too small to 'burn',and is thus almost invisible,but still has a gravitational field strong enough to act as a lens. As a type of MACHO (Massive Compact Halo Object) it could help account for the missing 'dark matter' which should make up about 90% of the mass of the Universe. Compare with R670/044 and R670/045 | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Alcock, Dr. Charles / Ames |
| Taille de l’image : | 4214 px × 4240 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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