DISCLAIMER: This article is being kept online for historical purposes. Though accurate at last review, it is no longer being updated. The page may contain broken links or outdated information.
The star that changed the universe
Soderblom, David Space Telescope Science Institute, Baltimore, Maryland.
- Hubble's achievement
- Copies of Hubble's plate
- HST observations of Hubble's variable
- Additional Reading
On the night of October 5/6, 1923, Edwin Powell Hubble took an astronomical photograph that is now famous (Fig. 1). He used the 100–in. (2.5–m) Hooker telescope on Mount Wilson, above Pasadena, CA, to expose a 4 × 5–in. (102 × 127–mm) glass plate for 45 min. He had pointed the telescope at a field in M31, the great nebula in Andromeda, and he was engaged in a long-term effort to first find Cepheid variable stars in M31 and to then measure their light curves. Doing this would enable Hubble to determine the distance to M31, a matter much in dispute at that time.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information