The Oldest Known Galaxy Is Discovered
At a glance:
- Series: Great Events from History II: Science and Technology Series
- Categories: Science
- Subcategories: Scientists, Astronomy, Astronomers, Cosmology
- Curriculum: American History 1951-present
- Geographical Location: Arizona
- Date: March, 1988
Article abstract: A galaxy was discovered with a redshift of 380 percent, which places it among the most distant observable objects, including quasars, in the universe.
Summary of Event
Prior to 1985, the most distant visible objects in the universe were quasars. Because of their great distances, large redshifts were reported. A redshift is the result of a change in wavelength or frequency caused by relative motion away from an observer. This creates a shift in the observed spectral lines toward the red end of the spectrum. A 100 percent shift, for...
[The entire page is 1752 words long]