Relive some of the most unexpected accidents in spaceflight and meet the astronauts who had to fix them on the fly
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Get the inside story of NASA’s early victories and failures, through firsthand accounts and rarely seen mission footage
2020 • Astronomy
Discover what makes re-entry into our atmosphere so challenging and relive some of the most perilous returns to Earth
2020 • Astronomy
Relive some of the most unexpected accidents in spaceflight and meet the astronauts who had to fix them on the fly
2020 • Astronomy
See how little things like a stripped screw or a faulty toilet can become big emergencies when they happen in space.
2020 • Astronomy
Flying through bad weather can be a harrowing experience, and for NASA, it can be doubly unnerving, as violent storms can strike from below the atmosphere or above it. Witness the true power of nature in space and on Earth as astronauts and ground crews battle to overcome the elements, including a severe lightning strike that crippled Apollo 12's computer system, the freezing temps that compromised the Space Shuttle Challenger, and the tempest of space debris that sent a dead satellite on a collision course with the International Space Station.
2020 • Astronomy
There’s a reason rocket science is used as a benchmark for difficulty. See why as we examine great liftoff disasters.
2020 • Astronomy
The only reason life on Earth is possible is because of our stable orbit around the Sun. Elsewhere in the Universe, orbits are chaotic, violent and destructive. On the largest scale, orbits are a creative force and construct the fabric of the Universe.
S4E4 • How the Universe Works • 2015 • Astronomy
If a massive asteroid collides with earth, it could end life on our planet as we know it; new discoveries and cutting-edge tech reveal just how close we are to apocalypse and what it would take for the world's leading space agencies to stop it.
S8E1 • How the Universe Works • 2020 • Astronomy
The fourth planet from the sun and the outermost of the terrestrial planets, Mars has long been a popular spot for missions and imagination. Phil walks you through the planet's topography, core, and features. We'll take a look back to Mars's past and makes predictions for its future, including the possibilities for human life.
15 • Crash Course Astronomy • Astronomy
For centuries the giant planets floated on the fringes of the solar system as distant objects in the eyepieces of astronomers. But in December 1973 mankind had its first close encounter with Jupiter. We chart the story of our discovery of these massive planets, Jupiter, Saturn, Uranus and Neptune.
S1E3 • The Planets • 2004 • Astronomy
While Jupiter is nowhere near massive enough to initiate fusion in its core, there are even more massive objects out there that fall just short of that achievement as well called brown dwarfs. Brown dwarfs, have a mass that places them between giant planets and small stars. They were only recently discovered in the 1990’s, but thousands are now known. More massive ones can fuse deuterium, and even lithium, but not hydrogen, distinguishing them from “normal” stars. Sort of.
28 • Crash Course Astronomy • 2015 • Astronomy
Neutrinos are the most mysterious particles in the universe, and they power some of the most explosive events in the cosmos; new discoveries reveal how these ghosts pass through objects undetected and why they could be the reason we exist.
S9E8 • How the Universe Works • 2021 • Astronomy