Now that the team has images of two black holes, they have a basis for comparison.

Thus far, they are struck by how similar they both look even given their difference in size.

Eight observatories were linked virtually to photograph a black hole at the center of the Milky Way.

Sgr A*, the supermassive black hole at the centre of our galaxy

Photo: EHT Collaboration

Anatomy of a Black Hole

Photo: ESO

The Milky Way and the location of its central black hole as viewed from the Atacama Large Millimeter/submillimeter Array

Photo: ESO/José Francisco Salgado, EHT Collaboration

Black Hole in the Milky Way

Photo: EHT collaboration

Comparison of the sizes of two black holes: M87* and Sagittarius A*

Photo: EHT collaboration (acknowledgment: Lia Medeiros,xkcd)