COLLECTED BY
Organization:
Internet Archive
The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the
Wayback Machine.
Content crawled via the
Wayback Machine Live Proxy mostly by the Save Page Now feature on web.archive.org.
Liveweb proxy is a component of Internet Archive’s wayback machine project. The liveweb proxy captures the content of a web page in real time, archives it into a ARC or WARC file and returns the ARC/WARC record back to the wayback machine to process. The recorded ARC/WARC file becomes part of the wayback machine in due course of time.
The Wayback Machine - https://web.archive.org/web/20190305033741/https://science.nasa.gov/astrophysics/astrophysics-data-centers/set-of-identifications-measurements-and-bibliography-for-astronomical-data-simbad
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Set of Identifications, Measurements, and Bibliography for Astronomical Data (SIMBAD)
The Set of Identifications, Measurements, and Bibliography for Astronomical Data (SIMBAD), created and maintained by the CDS, Strasbourg, brings together basic data, cross-identifications, observational measurements, and bibliography, for celestial objects outside the solar system: stars, galaxies, and nonstellar objects within our galaxy, or in external galaxies. SIMBAD contains information for about 1 million objects, for which 3.3 million identifiers, more than 1.5 million observational measurements and 1.4 million bibliographical references are available.
