Tag Archive | Cosmology

Shedding light on dark matter

In this video from TedEd we get more information about the dark matter.

Physicist Patricia Burchat sheds light on two basic ingredients of our universe: dark matter and dark energy. Comprising 96% of the universe between them, they can’t be directly measured, but their influence is immense.

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Dark matter: How does it explain a star’s speed?

In this educational video we get an insight into dark matter.

All the stars in a spiral galaxy rotate around a center — but to astronomers, the speed that each star travels wasn’t making sense. Why didn’t stars slow down toward the edges as expected? Don Lincoln explains how a mysterious force called dark matter is (possibly) the answer — and why the search for an answer matters.

David Christian: The history of our world in 18 minutes

In this talk from TED we witness the history on the universe in 18 minutes.

Backed by stunning illustrations, David Christian narrates a complete history of the universe, from the Big Bang to the Internet, in a riveting 18 minutes. This is “Big History”: an enlightening, wide-angle look at complexity, life and humanity, set against our slim share of the cosmic timeline.