David Ackroyd
Featured role
Series
From the planets to the stars and out to the edge of the unknown, history and science collide in a wondrous yet deadly adventure through space and time.
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Season guide
14 episodes available
Behold the sun and all of it's glory. Learn all things about the sun ranging from its beginning to its death. Also learn about how stars work in general and MUCH MUCH more.
Visit the planet most like Earth. There is a discussion of what life on Mars would be like and about the life forms that could've evolved there.
On screen
Featured role
Featured role
More from the vault
Asteroids, comets, gamma ray bursts and the sun all combine to make the Earth a dangerous place to live. NASA's top brass and other scientists are arming themselves with the latest technology to pre-empt an apocalyptic attack. Watch and investigate bizarre, and terrifying apocalyptic scenarios and the ways that scientists are racing against the clock to develop technology to defend our planet.