6 July 1991
Hubble Images Andromeda Double Nucleus
Hubble observations resolve two distinct brightness peaks in the central region of M31, revealing the unusual double structure of its nucleus.
Historical place archive
Browse historical events and people recorded at Andromeda Galaxy in United States of America. The records below are rendered directly from the World History Database into this page's initial HTML.
Hubble observations resolve two distinct brightness peaks in the central region of M31, revealing the unusual double structure of its nucleus.
NASA announces Hubble evidence that the core of M31 contains a double nucleus, challenging simple models of the galaxy's central stellar structure.
The Panchromatic Hubble Andromeda Treasury releases a major resolved-star survey of M31 using ultraviolet, optical and near-infrared Hubble observations.
Hubble measurements constrain M31's sideways motion against distant background galaxies, enabling a quantitative forecast of its future encounter with the Milky Way.
Provenance
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