Dark Matter
In Our Time12 Mar 2015

Dark Matter

Melvyn Bragg and his guests discuss dark matter, the mysterious and invisible substance which is believed to make up most of the Universe. In 1932 the Dutch astronomer Jan Oort noticed that the speed at which galaxies moved was at odds with the amount of material they appeared to contain. He hypothesized that much of this 'missing' matter was simply invisible to telescopes. Today astronomers and particle physicists are still fascinated by the search for dark matter and the question of what it is.

With

Carolin Crawford Public Astronomer at the Institute of Astronomy, University of Cambridge and Gresham Professor of Astronomy

Carlos Frenk Ogden Professor of Fundamental Physics and Director of the Institute for Computational Cosmology at the University of Durham

Anne Green Reader in Physics at the University of Nottingham

Producer: Simon Tillotson.

Denne episoden er hentet fra en åpen RSS-feed og er ikke publisert av Podme. Den kan derfor inneholde annonser.

Episoder(1100)

Seashells

Seashells

Misha Glenny and guests discuss a familiar feature of our beaches: seashells, from their astonishing shapes and patterns that teach us about Earth’s oceans, to the ways that humans have treasured shel...

30 Jul 53min

Vigée Le Brun

Vigée Le Brun

Misha Glenny and guests discuss the French portrait painter Élisabeth Vigée Le Brun (1755 - 1842). From her teens she delighted her high society subjects in and around Paris, notably Marie Antoinette ...

23 Jul 56min

The Delian League

The Delian League

Misha Glenny and guests discuss the origins and evolution of an alliance which transformed the geopolitics of the classical world: the Delian League. Since the start of the 5th Century BCE, city state...

16 Jul 54min

Machado de Assis

Machado de Assis

Misha Glenny and guests discuss one of the towering figures of Brazilian and world literature, Machado de Assis (1839 - 1908). He was the descendant of slaves and built his career while slavery was s...

9 Jul 53min

The Evolution of Trees

The Evolution of Trees

Misha Glenny and guests discuss the earliest evidence we have of the existence of trees and how even plants we might have on windowsills or as vegetables in gardens can and do, in the right conditions...

2 Jul 54min

The Welsh Marches

The Welsh Marches

At the Hay Festival, Misha Glenny and guests discuss the impact of the Norman invasion on the people and land of Wales and across the modern border with England in what became known as The Welsh March...

25 Jun 52min

The Levellers

The Levellers

Misha Glenny and guests discuss the group which came to be known as the Levellers and emerged during what would become arguably one of the bloodiest and most turbulent periods of English history. Afte...

18 Jun 55min

The Garamantes

The Garamantes

Misha Glenny and guests discuss an ancient civilisation who lived over 2000 years ago in the southwest of modern-day Libya. During prehistoric times, the Sahara Desert was greener and even had large l...

11 Jun 57min

Populært innen Historie

rss-dette-ma-aldri-skje-igjen
henrettelsespodden
historier-som-endret-norge
sektledere
historier-som-endret-verden
med-egne-oyne
rss-benadet
aftenposten-historie
rss-nadelose-nordmenn-gestapo
rss-frontkjemperne
liberal-halvtime
historiske-kjendiser
rss-strid-de-norske-borgerkrigene
vare-historier
virkelig-grusomt
diktatorpodden
historiepodden
rss-historiepodden-ww2
historiepodden-ww2
rss-gamle-greier