Lone black hole passes in front of star (ground-based view)

Two images of a crowded starfield as seen through a ground-based telescope show the subtle brightening of a star due to the effect of gravitational microlensing, where an invisible but massive foreground object passes in front of the star and amplifies its light.


NOAO, Cerro Tololo Inter-American Observatory

About the Image

NASA press release
NASA caption
Release date:13 January 2000, 18:30
Size:67 x 67 px

About the Object

Name:Black Holes, Milky Way
Type:Milky Way : Cosmology : Phenomenon : Lensing
Quasars and Black Holes

Image Formats

Large JPEG
8.7 KB
Screensize JPEG
85.8 KB


Position (RA):18 5 2.47
Position (Dec):-27° 42' 17.01"
Field of view:0.45 x 0.45 arcminutes
Orientation:North is -0.0° left of vertical

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