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There are Black Holes, and then there are Monster Black Holes -- containing several million to ten billion times the mass of our Sun! They've been discovered in the center of many galaxies. But they don't just absorb everything around them...in fact, they may be key to forming new galaxies.
10 • Cosmic Front • 2014 • Astronomy
Astronaut Mike Massimino reveals the mysterious secrets of the moon, a world permanently tied to Earth; using new research, he uncovers the mysterious origin of the moon and how it kick-started life on Earth.
S1E8 • The Planets (US) • 2017 • 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
Active galaxies pour out lots of energy, due to their central supermassive black holes gobbling down matter. Galaxies tend not to be loners, but instead exist in smaller groups and larger clusters. Our Milky Way is part of the Local Group, and will one day collide with the Andromeda galaxy. Clusters of galaxies also clump together to form superclusters, the largest structures in the Universe. In total, there are hundreds of billions of galaxies in the Universe.
39 • Crash Course Astronomy • 2015 • Astronomy
Documentary marking the fiftieth anniversary of Yuri Gagarin's flight into space. It was hailed by the Soviet Union as a triumph for socialist science over capitalism, but the true story is much stranger. George Carey's film shows how the Soviet space programme was kick-started by a mystic who taught that science would make us immortal, and carried forward by a scientist who believed that we should evolve into super-humans who could leave our overcrowded planet to colonise the universe. Stranger still, Carey shows how those ideas have survived Communism and adapted themselves to the science of the modern world.
2011 • Astronomy
One day, a cosmic disaster will make life on Earth impossible. To survive, we must find a new home amongst the stars. Scientists are already developing new propulsion systems to take us to these distant worlds.
S3E8 • How the Universe Works • 2014 • Astronomy