There’s a reason rocket science is used as a benchmark for difficulty. See why as we examine great liftoff disasters.
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
For as long as we’ve had eyes to see and minds to wonder we’ve marveled at the stars. Since the discovery of the first so-called exoplanet in 1994, the Planet Hunters have transformed the way we see the universe. It is the year 2157, and spacecraft Artemis enters the final phase of construction.
1/4 • Living Universe • 2018 • Astronomy
NASA launches its most ambitious hunt for traces of life on Mars, landing a car-sized rover in a rocky, ancient river delta. The rover will stow samples for possible return to Earth and test technology that may pave the way for human travel to Mars.
The Milky Way is our neighborhood in the universe. It’s a galaxy and there are many others out there. Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular. Galaxies can collide, and grow in size by eating each other.
38 • Crash Course Astronomy • 2015 • Astronomy
When a strange alien object is discovered speeding through our solar system, experts race to uncover if it's real evidence of extraterrestrial contact or a deadly asteroid on a collision course with planet earth.
Space's Deepest Secrets • 2018 • Astronomy
Worried about black holes? Consider this: Every time you accelerate - you generate an event horizon behind you. The more you accelerate away from it the closer it gets. Don’t worry, it can never catch up to you, but the Unruh radiation it generates sure can.
PBS Space Time • 2018 • Astronomy
This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe.
#3 • Crash Course Astronomy • Astronomy