How Do We Know How Old the Sun Is? The Royal Observatory, Greenwich, and animation studio Beakus join together to explain how Kepler and Newton’s laws help us figure out the weight of the sun, how the age of our solar system can be calculated by studying meteorites, and how that data helps us determine the sun’s age.
Showing 24 posts tagged universe
Travel back in time to Ancient Greece where revolutionary thinkers – from Thales, Pythagoras, Democritus and Aristotle to Euclid, Archimedes, and Hypatia of Alexandria – helped define the rules and language of mathematics.
For Greek thinkers, maths wasn’t simply a means of calculating amounts but a way of testing reality and understanding the true nature of the world around them. Indeed, Pythagoras is believed to have coined both the words “philosophy” (“love of wisdom”) and “mathematics” (“that which is learned”).
From the Ri Channel, Phoebe Halstead, and 12foot6, this is the two-minute story of math’s great Greek Legacy: How the Ancient Greeks shaped modern mathematics.
Has the universe a beginning or was it here since forever? Well, evidence suggests that there was indeed a starting point to this universe we are part of right now. But how can this be? How can something come from nothing? And what about time? We don’t have all the answers yet so let’s talk about what we know.
Previously on this site: Take a trip through The Solar System — our home in space, plus more about The Big Bang, including Carl Sagan’s cosmic calendar and the last five minutes of How the Universe Works: Extreme Stars.
In the year 2020, seven of the largest mirrors on Earth — 20 tons each — will come together in a 22-story, rotating building located in the southern Atacama Desert of Chile. They will form the Giant Magellan Telescope, a feat of science, technology, engineering and math that will have ten times the resolution of the Hubble Space Telescope.
In this video from July 2013, Dr. Wendy Freedman, Chairman GMT, and Dr. Pat McCarthy, Director GMT, explain the astounding challenge of creating this precise, powerful, and wondrous machine. Read more at Phys.org.
In the archives: more telescope-related vids.