ASTR 101 Chapter Notes - Chapter Reading: Snow Globe, Mark Sargent, Epicenter

17 views4 pages
15 Oct 2018
School
Department
Course
Professor

Document Summary

Pythagoras had no evidence, but believed earth was a sphere. Ships sailing out to sea would disappear hull first, appearing as if they were sinking into the ocean on the horizon. A second reasoning was that different constellations are visible at different latitudes, which shows that the sky seen from earth appears as a dome above us. Finally, in a lunar eclipse, the earth casts a round shadow on the moon. Photos of earth weren"t taken until the 20th century. The ability to doctor images easily and growth of conspiracy theories have contributed to the rise of flat-earthers. One of the best documented methods of showing earth as a sphere was performed by the greeks. When the sun was directly overhead in one place, a stick there cast no shadow. At the same time in a city around 500 miles north, a stick there did cast a shadow.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents