Rosetta: Memories of a Comet • 2017

11:09

Today Phil follows up last week’s look at the death of low mass stars with what comes next: a white dwarf. White dwarfs are incredibly hot and dense objects roughly the size of Earth. They also can form planetary nebulae: huge, intricately detailed objects created when the wind blown from the dying stars is lit up by the central white dwarf. They only last a few millennia. The Sun probably won’t form one, but higher mass stars do.

30 • Crash Course Astronomy • 2015 • Astronomy

42:00

Dark matter is the biggest mystery of the cosmos. Scientists know that it has been vital to the universe since its birth, and new discoveries reveal that it could create black holes, cause mass extinctions, and might even shape life on Earth itself.

S5E8 • How the Universe Works • 2017 • Astronomy

28:50

The team explores one of the greatest discoveries of modern astronomy - that our universe is expanding - and the new questions it raises about how the cosmos works.

The Sky at Night • 2025 • Astronomy

41:52

We strip apart asteroids and peel back surfaces, slice open craters, and exploding out rocks layer by layer to explore these miniature worlds and the secrets of the early solar system.

S1E3 • Strip the Cosmos • 2014 • Astronomy

16:35

The United States and China are considering launching manned missions to Mars -- in 25 years. But Netherlands-based Mars One has a bold plan to land humans on Mars in 2027. Is the mission fuelled by wishful thinking and unproven science -- or will private explorations get us there?

S1E1 • Destination Mars • 2015 • Astronomy

42:29

A look at the concepts behind changing the way we travel through the space-time continuum, and how extreme speed and extreme gravity can change the rules of the game.

S8E5 • How the Universe Works • 2020 • Astronomy