After the destruction of Shuttle Challenger, the US considered grounding its fleet for good. That is until the stunning discovery that the Soviets had built their own fleet using plans stolen from NASA.
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The space shuttles were intended to be a safe and cost-effective way to get into space, yet ignorance and an impending shutdown threatened that. Follow the extraordinary history of the NASA space shuttles from the 1981 maiden space flight to the televised explosion of Challenger in 1986.
2018 • Astronomy
Meet the scientists across the world on the hunt for dark energy, an unknown form of energy which is hypothesized to permeate all of space and may be accelerating the expansion of the universe.
S1E2 • Space's Deepest Secrets • 2016 • Astronomy
Massive stars fuse heavier elements in their cores than lower mass stars. This leads to the creation of heavier elements up to iron. Iron robs critical energy from the core, causing it to collapse. The shock wave, together with a huge swarm of neutrinos, blast through the star’s outer layers, causing it to explode. The resulting supernova creates even more heavy elements, scattering them through space. Also, happily, we’re in no danger from a nearby supernova.
31 • Crash Course Astronomy • 2015 • Astronomy
Is it possible that there is a hidden planet within our own solar system? New evidence suggests that the fabled Planet X, or Planet 9, may indeed exist… but where? Meet the teams racing to discover and redefine our planetary neighborhood.
Breakthrough • 2020 • Astronomy
Space scientist Dame Dr Maggie Aderin-Pocock continues her search for alien life with a grand tour of our solar system. Could any other planets or moons out there be habitable?
S1E2 • Royal Institution Christmas Lectures: Is There Life Beyond Earth? • 2025 • Astronomy
In the aftermath of a 8 – 20 solar mass star’s demise we find a weird little object known as a neutron star. Neutrons stars are incredibly dense, spin rapidly, and have very strong magnetic fields. Some of them we see as pulsars, flashing in brightness as they spin. Neutrons stars with the strongest magnetic fields are called magnetars, and are capable of colossal bursts of energy that can be detected over vast distances.
32 • Crash Course Astronomy • 2015 • Astronomy