Apr 2, 2018

Lensed star in the cluster MACS j1149.5+223

Posted by in category: space

This image shows the huge galaxy cluster MACS J1149.5+223, whose light has taken over 5 billion years to reach us.

Highlighted is the position where the star LS1 appeared — its image magnified by a factor 2000 by gravitational microlensing. The galaxy in which the star is located can be seen three times on the sky — multiplied by strong gravitational lensing.

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