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Listed under:  Science  >  Earth and space  >  Universe
Video

Future of the moon

This 4 minute video segment from Catalyst describes how Moon rocks may hold clues about the beginnings of life on Earth because of the lack of weathering and erosion.

Video

Exoplanets

This nine and a half minute video segment from Catalyst explains that relatively recently times we have got the technology to look for exoplanets. Astronomers have now uncovered more than 350 planets orbiting other stars. These worlds, known as exoplanets, can be pretty weird places. This program discusses a theory to describes ...

Video

Very Large Telescope

This 10 minute video segment from Catalyst explains why the telescope is located where it is and relates it to the properties of light.

Video

Threshold 2: The Stars Light Up

This short video gives an overview of the emergence of the first atoms, hydrogen and helium, 380,000 years after the Big Bang. The effects of gravity led to tiny variations in the density of matter throughout the Universe, which in turn became heated, resulting in fusion and the emergence of the first stars, galaxies, and ...

Video

Threshold 1: The Big Bang

This short video offers an overview of The Big Bang - the unanswered questions about what preceded it, and the existence of space and time after it, as well as matter and energy. The forms that energy and matter then took is explained.

Video

What emerged from the Big Bang?

This 13 minute video in 3 parts explains how the Big Bang theory developed by looking at the evidence that supports it, including Hubble's theory of the birth of the universe, Hoyle's naming of it and Einstein's theory of energy and matter. Part 2 looks at what happened after the Big Bang - the emergence of the 4 fundamental ...