Most of Our Universe is Missing

Category: Astronomy

We know what 4% of the Universe is made of. But what about the rest?

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Big Bang

The big bang still remains the greatest mystery of all time.

S1E3How the Universe Works • 2010 • Astronomy

Asteroids - Worlds that Never Were

Asteroids have a bad reputation as deadly rocks from space. They wiped out the dinosaurs and will be back for us. But that's only half the story. Ancient asteroids built the Earth. And they may have brought life to its barren surface. Asteroids will shape our future as much as our past. They are the perfect location for deep space colonies and could be the stepping stones that eventually send humans out into the cosmos. From icy worlds with more fresh water than Earth to flying mountains of pure metal, a hundred miles wide, scientists are striving to unlock their secrets. Could these enigmatic space rocks hold the key to how life in the Universe arises and is extinguished?

S2E7How the Universe Works • 2012 • Astronomy

Magnificent Desolation

1969-1970, takes Americans to the moon and back. Dreams of space dramatically intersect with dreams of democracy on American soil, raising questions of national priorities and national identity. The final episode also considers what happens to scientific and engineering programs — and to a country — after ambitious national goals have been achieved.

3/3Chasing the Moon • 2019 • Astronomy

Alien Worlds: Stranger Than Fiction

Astronaut Mike Massimino explores the incredible new alien planets being found daily by astronomers; using the latest science, he investigates everything from worlds that appear to eat light to planets that resemble Earth in shocking ways.

S1E7The Planets (US) • 2017 • Astronomy

Lift Off

Kevin explores and probes second by second what it takes to 'lift off' into space. With Tim only days into his six-month mission, he helps Kevin answer what keeps astronauts safe and on track as they are propelled into orbit. How do you control the energy of 300 tonnes of liquid fuel? What happens to your body if you don't wear a spacesuit? And how do you catch up with a space station travelling at 17,500 mph to finally get inside? With explosive live experiments, guest astronauts in the lecture theatre, and planetary scientist Monica Grady direct from the launch pad in Kazakhstan, we learn all this and more as those thrilling minutes of lift off are recreated.

1/3How to Survive in Space • 2015 • Astronomy

The Physics of Life

Our universe is prone to increasing disorder and chaos. So how did it generate the extreme complexity we see in life? Actually, the laws of physics themselves may demand it.

PBS Space Time • 2018 • Astronomy