On April 10th, 2019, astronomers made a historical discovery within the enshrouded area: they captured the first picture of a supermassive black hole. Learn more about black holes with us!
Manifest Destiny in US History: During the 19th century, the term Manifest Destiny was coined – a belief that America was readily destined to expand its territory across the continent. In this lesson, we explain important events and people that influenced Manifest Destiny, including Mountain Men, Lewis and Clark, Mormons, and the Gold Rush.
What makes something living? What are the characteristics of living things? All life has a common origin, but how do we know? This lesson examines various characteristics that define life and the origin of life. Various famous scientists and their biological discoveries are also discussed.