Why is the Universe accelerating? Nobel Laureate Brian Schmidt explains

In 1998 two teams traced back the expansion of the universe over billions of years and discovered that it was accelerating. It was a startling discovery that suggests that more than 70 per cent of the cosmos is contained in a previously unknown form of matter, called Dark Energy.
In this video, Brian Schmidt, leader of the High-Redshift Supernova Search Team, describes this discovery and explains how astronomers have used observations to trace our universe's history back more than 13 billion years, leading them to ponder the ultimate fate of the cosmos.
Brian's work on the accelerating universe was awarded the 2011 Nobel Prize in Physics, jointly with Adam Riess and Saul Perlmutter.

[@obiwanduglobi6359]

Tnx 4 the opload. One of the most important things for science is to have brilliant people on bord who translate the newest results into a language which is understandable for the broad public. Thank you, Professor! :-)

[@Alessandro-B]

Excellent lecture.

[@dondeg1]

What a great ending! Wonderful talk. Worth watching all the way through!

[@samusaran13372]

Good lecture. I enjoyed it. Thanks for posting it!

[@fan1597534862]

This is a brilliant lecture :)

[@matthiasschulze393]

wow, he is an excellent lecturer as well as researcher..how did the usa loose him