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From the furthest reaches of space to our own cosmic backyard, we count down the discoveries that changed everything we know about our universe.
S5E1 • How the Universe Works • 2016 • Astronomy
Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly its expanding also allows us to run the clock backwards 14 billion years to the way the universe began - with a bang.
42 • Crash Course Astronomy • 2015 • Astronomy
For twenty years, NASA's Cassini spacecraft revealed the strange secrets of Saturn until it vaporized in its atmosphere in a blaze of glory. But today its legacy lives on, as fresh data from the probe helps scientists make brand-new discoveries.
S7E10 • How the Universe Works • 2019 • Astronomy
The universe is unbelievably big – trillions of stars and even more planets. Soo… there just has to be life out there, right? But where is it? Why don’t we see any aliens? Where are they? And more importantly, what does this tell us about our own fate in this gigantic and scary universe?
1/2 • The Fermi Paradox • Astronomy
Explores how light, time and gravity affects our perception of the universe.
S1E4 • Cosmos: A Spacetime Odyssey • 2014 • Astronomy
Elon Musk and experts from SpaceX and NASA are on a mission to revolutionize space exploration, and special inside access reveals how their cutting-edge spacecraft technology will carry humans to the Moon, Mars and beyond.
2020 • Astronomy