The Cool Universe
In Our Time6 Mai 2010

The Cool Universe

The Cool Universe is the name astronomers give to the matter between the stars.These great clouds of dust and gas are not hot enough to be detected by optical telescopes.But over the last few decades, they have increasingly become the focus of infrared telescopy.Astronomers had long encountered dark, apparently starless patches in the night sky. When they discovered that these were actually areas obscured by dust, they found a way to see through these vexing barriers, using infrared telescopes, to the light beyond.However, more recently, the dust itself has become a source of fascination.The picture now being revealed by infrared astronomy is of a universe that is dynamic.In this dynamic universe, matter is recycled - and so the dust and gas of the Cool Universe play a vital role. They are the material from which the stars are created, and into which they finally disintegrate, enriching the reservoir of cool matter from which new stars will eventually be formed. As a result of the new research, we are now beginning to see first-hand the way our planet was formed when the solar system was born.With:Carolin CrawfordMember of the Institute of Astronomy, and Fellow of Emmanuel College, at the University of CambridgePaul MurdinVisiting Professor of Astronomy at Liverpool John Moores University's Astronomy Research InstituteMichael Rowan-RobinsonProfessor of Astrophysics at Imperial College, LondonProducer: Phil Tinline.

Episoder(1085)

The Mariana Trench

The Mariana Trench

Misha Glenny and guests discuss one of the wonders of the natural world. In 1875 in the western Pacific, the crew of HMS Challenger discovered the Mariana Trench which turned out to be deeper than Ev...

19 Feb 58min

On Liberty

On Liberty

Journalist, author and historian Misha Glenny presents his first edition of In Our Time, succeeding Melvyn Bragg who retired from this role last summer. Misha and his guests discuss the landmark work ...

12 Feb 49min

Welcoming Misha Glenny

Welcoming Misha Glenny

Misha Glenny introduces himself to you ahead of his first episode on 15th January, answering some questions from producer Simon Tillotson and sharing what's coming up in the first few weeks.In Our Tim...

5 Feb 6min

Melvyn Bragg meets Misha Glenny

Melvyn Bragg meets Misha Glenny

Before Misha Glenny's first edition on 15th January, BBC Radio 4's flagship news programme Today has brought Melvyn Bragg and Misha Glenny together so they can share their ideas about In Our Time's su...

22 Jan 16min

Civility

Civility

Melvyn Bragg and guests discuss the idea that Civility, in one of its meanings, is among the most valuable social virtues: the skill to discuss topics that really matter to you, with someone who disag...

31 Jul 202551min

Dragons

Dragons

Melvyn Bragg and guests explore dragons, literally and symbolically potent creatures that have appeared in many different guises in countries and cultures around the world. Sometimes compared to snake...

24 Jul 202546min

Barbour's 'Brus'

Barbour's 'Brus'

Melvyn Bragg and guests discuss John Barbour's epic poem The Brus, or Bruce, which he wrote c1375. The Brus is the earliest surviving poem in Older Scots and the only source of many of the stories of ...

17 Jul 202549min

The Evolution of Lungs

The Evolution of Lungs

Melvyn Bragg and guests discuss the evolution of lungs and of the first breaths, which can be traced back 400 million years to when animal life spread from rock pools and swamps onto land, as some fis...

10 Jul 202548min

Populært innen Historie

rss-dette-ma-aldri-skje-igjen
med-egne-oyne
rss-katastrofe
henrettelsespodden
historier-som-endret-norge
historier-som-endret-verden
rss-nadelose-nordmenn-gestapo
sektledere
rss-benadet
aftenposten-historie
rss-strid-de-norske-borgerkrigene
rss-frontkjemperne
historiepodden
rss-gamle-greier
rss-bisarr-historie
rss-historiske-romanser-svik-drap-og-kjarlighet
taakeprat
rss-historier-fra-gudbrandsdalen
vare-historier
liberal-halvtime