Two methods of measuring the mass of a galaxy

This infographic compares the two methods used to measure the mass of the galaxy ESO 325-G004. The first method used the Very Large Telescope to measure the velocities of stars in ESO 325-G004. The second method used the Hubble Space Telescope to observe an Einstein ring caused by light from a background galaxy being bent and distorted by ESO 325-G004. By comparing these two methods of measuring the strength of the gravity of ESO 325-G004, it was determined that Einstein’s general theory of relativity works on extragalactic scales — something that had not been previously tested.



O zdjęciu

Typ:Wizja artysty
Data publikacji:21 czerwca 2018 20:00
Powiązane komunikaty:eso1819
Rozmiar:6251 x 4429 px

O obiekcie

Typ:Early Universe : Cosmology

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