
1851
Two new moons of Uranus are found. William Lassell discovered Ariel and Umbriel, the third and fourth moons of Uranus ever found.
Wikipedia: William LassellPhoto: Unknown author Unknown author / Wikimedia Commons (Public domain)
5 moments from 1851 to 2003: discovery, creativity and courage, each with a source to read more.
5 moments

1851
Photo: Unknown author Unknown author / Wikimedia Commons (Public domain)

1861
The first telegraph line stretching across the United States from coast to coast was completed.
Wikipedia: First transcontinental telegraph
Photo: Beneathtimp / Wikimedia Commons (CC0)

1946
A camera carried on a rocket took the first photograph of Earth from outer space.
Photo: U.S. Army / Wikimedia Commons (Public domain)

1975
To protest unequal pay and unfair treatment at work, 90 percent of women in Iceland went on strike for a day.
Wikipedia: Gender pay gapWikipedia: 1975 Icelandic women's strike
Photo: OECD (2017) – processed by Our World in Data / Wikimedia Commons (CC BY 4.0)
2003
Hyderabad hosted the opening of the first-ever Afro-Asian Games. 2,040 athletes came from 96 countries to compete.
Moments chosen for discovery, creativity and courage. Each one links to a source where you can read more; photos are credited to their owners.