Per Aspera Ad Astra • 1989 • episode "4/10" • The Sagan Series

44:01

Discover what makes re-entry into our atmosphere so challenging and relive some of the most perilous returns to Earth

S1E2 • Space Disasters • 2020 • Astronomy

11:21

Today Phil helps keep you from ticking off an astronomer in your life by making sure you know the difference between a meteor, meteorite, and meteoroid. When the Earth plows through the stream emitted by a comet we get a meteor shower. Meteors burn up about 100 km above the Earth, but some survive to hit the ground. Most of these meteorites are rocky, some are metallic, and a few are a mix of the two. Very big meteorites can be a very big problem, but there are plans in the works to prevent us from going the way of the dinosaurs.

23 • Crash Course Astronomy • 2015 • Astronomy

41:39

Twin stars create an oxygen-rich atmosphere on Eden, where a teeming biosphere may parallel seasonal cycles of predation and reproduction o Earth.

S1E3 • Alien Worlds • 2020 • Astronomy

47:04

Astronaut Chris Hadfield reveals the unlikely and unexpectedly interconnected systems that allow life on our planet to breathe.

1/10 • One Strange Rock • 2018 • Astronomy

7:00

What would happen if we bring a sample (the size of a house) of the Sun to Earth?

In a Nutshell • 2017 • Astronomy

89:39

Twelve billion miles away a tiny spaceship is leaving our solar system and entering the void of deep space. It is the first human-made object ever to do so. Slowly dying within its heart is a plutonium generator that will beat for perhaps another decade before the lights on Voyager finally go out. But this little craft will travel on for millions of years, carrying a Golden Record bearing recordings and images of life on Earth. The story of Voyager is an epic of human achievement, personal drama and almost miraculous success. Launched 16 days apart in 1977, the twin Voyager space probes have defied all the odds, survived countless near misses and almost 40 years later continue to beam revolutionary information across unimaginable distances. With less computing power than a modern hearing aid, they have unlocked the stunning secrets of our solar system. This film tells the story of these magnificent machines, the men and women who built them and the vision that propelled them farther than anyone could ever have hoped.

Storyville • 2017 • Astronomy