Gravitational microlensing
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Gravitational microlensing is an astronomical phenomenon caused by the gravitational lens effect. It can be used to detect objects that range from the mass of a planet to the mass of a star, regardles
The object causing the microlensing in NGC 6553 bent the light of a red giant star in the background.
A Horseshoe Einstein Ring from Hubble
PDS 70
Gravitational lens
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A gravitational lens is matter, such as a cluster of galaxies or a point particle, in sufficient quantity and density to bend light noticeably from a distant source as it travels toward an observer. T
Gravitational microlensing
…Gravitational microlensing is an astronomical phenomenon caused by the gravitational lens effect. It can be used to detect objects that range from the mass of a planet to the mass of a star, regardless of the light they emit. Typically…
One of Eddington's photographs of the 1919 solar eclipse experiment, presented in his 1920 paper announcing its success
Bending light around a massive object from a distant source. The orange arrows show the apparent position of the background source. The white arrows show the path of the light from the true position of the source.
In the formation known as Einstein's Cross, four images of the same distant quasar appear around a foreground galaxy due to strong gravitational lensing.
This image from the NASA/ESA Hubble Space Telescope shows the galaxy cluster MACS J1206.