Solar Storms: The Threat to Planet Earth

Category: Astronomy
Download:

There is a new kind of weather to worry about, and it comes from our nearest star. Scientists are expecting a fit of violent activity on the sun which will propel billions of tonnes of superheated gas and pulses of energy towards our planet. They have the power to close down our modern technological civilisation - e.g. in 1989, a solar storm cut off the power to the Canadian city of Quebec. Horizon meets the space weathermen who are trying to predict what is coming our way, and organistions like the National Grid, who are preparing for the impending solar storms.

You might also like

Cycles in the Sky

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.

#3Crash Course AstronomyAstronomy

Oceans of the Solar System

The oceans define the earth. They are crucial to life and we used to think that they were unique to our blue planet. But we were wrong. It has recently been discovered that there are oceans all over our solar system, and they are very similar to our own. And now scientists are going on an epic journey in search of new life in places that never seemed possible. Nasa is even planning to dive to the depths of a strange, distant ocean in a remarkable submarine. Horizon discovers that the hunt for oceans in space is marking the dawn of a new era in the search for alien life.

Horizon • 2016 • Astronomy

Solar Systems

Explore the violent formation of our solar system, and look forward to its eventual death. And, what do other planetary systems around far-flung stars look like?

S1E5How the Universe Works • 2010 • Astronomy

The Age of Humans

The second part, "The Age of Humans", explores the rise of the human race and civilizations, along with changing weather patterns and climates.

2/2The Life of Earth • 2019 • Astronomy

How Does the Universe Work?

Quantum theory, the best explanation of how atoms and anything smaller behave, is so weird even scientists who have mastered it find it baffling. But bit by bit scientists are finding maybe it's not so weird as comparable behavior is discovered in our every day world. It's just that no one noticed before.

S2E07Through the WormholeAstronomy

Life in Orbit

Kevin explores life in orbit on board the Station. As Tim settles in to his new home he sends special reports about what it takes to live and work in space. Four hundred kilometres above the Earth, hurtling at a speed of 17,500mph, astronauts' bones and muscles waste away, the oxygen they breathe is artificially made, and they face constant threats from micrometeorites, radiation and extreme temperatures. If a medical emergency strikes, Tim is a very long way from home. In its 15-year lifetime, the International Space Station has never had a major accident. With a British astronaut in orbit, gravity-defying experiments and guest astronauts in the lecture theatre, Dr Fong shows us how to survive life in orbit.

2/3How to Survive in Space • 2015 • Astronomy