Accession 20-111

Smithsonian Astrophysical Observatory

Website Records, 2019

Descriptive Entry

This accession consists of web-based content related to the first image ever taken of a black hole. The image was captured in April 2017 during observations made by the Chandra X-ray Observatory in coordination with the Event Horizon Telescope and was publicly announced in April 2019. The Chandra X-ray Observatory is operated by the Smithsonian Astrophysical Observatory for the United States National Aeronautics and Space Administration.

A press release, issued on April 10, 2019, by the Harvard-Smithsonian Center for Astrophysics (CfA), was crawled on April 11, 2019. The CfA is a joint venture between the Smithsonian Astrophysical Observatory and the Harvard College Observatory. A blog post, issued on April 8, 2019, by the Chandra X-ray Observatory, was also crawled on April 11, 2019. In addition, the search results of Twitter posts containing the hashtag "#EHTBlackHoleQ" were captured on July 1, 2019. Twitter is a microblogging platform and the hashtag was used for posts related to a question and answer session on April 10, 2019.

Materials are in electronic format.

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Index Terms

This collection is indexed under the following access terms. These are links to collections with related topics, persons or places.

Name

• Chandra X-ray Observatory (U.S.)
• Event Horizon Telescope
• Harvard College Observatory
• Harvard-Smithsonian Center for Astrophysics
• Twitter (Firm)
• United States. National Aeronautics and Space Administration

Subject

• Astronomical observatories
• Astrophysics
• Black holes (Astronomy)
• Blogs
• Museums -- Public relations
• Research
• Web sites

Physical Characteristics of Materials in the Collection

• Electronic records
• Web sites

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Administrative Information

Preferred Citation

Smithsonian Institution Archives, Accession 20-111, Smithsonian Astrophysical Observatory, Website Records

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