Browsing Tag
history of astronomy
2 posts
Are aliens real? Scientists have been hunting for extraterrestrial life since the time of Aristotle
Robert William Smith, University of Alberta Do aliens exist? Could Earth really be the only planet hosting intelligent…
Measuring the True Scale of the Universe, Part 1
Starting with Eratosthenes’ clever calculation of Earth’s circumference using shadows and wells, early astronomers used geometric reasoning and…