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Ideas about time and space are explored in the changes that constellations undergo over time, the redshift and blue shift measured in interstellar objects, time dilation in Albert Einstein's theory of relativity, the designs of both Leonardo da Vinci and spacecraft that could travel near light speed, time travel and its hypothetical effects on human history, the origins of the Solar System, the history of life, and the immensity of space. In Cosmos Update, the idea of faster-than-light travel by wormholes (researched by Kip Thorne and shown in Sagan’s novel Contact) is discussed.
8/13 • Cosmos: A Personal Voyage • 1980 • Astronomy
A hidden underground network, a collaboration of four kingdoms of life, is revealed.
7/13 • Cosmos: Possible Worlds • 2020 • Astronomy
In summer 2013, the black hole at the centre of the Milky Way was getting ready to feast. A gas cloud three times the size of our planet strayed within the gravitational reach of our nearest supermassive black hole. Across the globe, telescopes were being trained on the heart of our galaxy, some 27,000 light years from Earth, in the expectation of observing this unique cosmic spectacle. For cosmic detectives across the Earth, it was a unique opportunity. For the first time in the history of science, they hoped to observe in action the awesome spectacle of a feeding supermassive black hole.
Carl Sagan talks about our future and the exploration of space
7/10 • The Sagan Series • 1989 • Astronomy
A non-profit organization established in 2011 is aiming to land the first Israeli spacecraft on the Moon. This is the story of their attempt and the excitement of being the first private company to have a spacecraft launched with the intention of going to and landing on the moon.
S3E2 • Breakthrough • 2019 • Astronomy
"You might have thought, as I did then, that our species would be on Mars before the century was over"
6/10 • The Sagan Series • 1989 • Astronomy