The Death of Stars
In Our Time7 Heinä 2022

The Death of Stars

Melvyn Bragg and guests discuss the abrupt transformation of stars after shining brightly for millions or billions of years, once they lack the fuel to counter the force of gravity. Those like our own star, the Sun, become red giants, expanding outwards and consuming nearby planets, only to collapse into dense white dwarves. The massive stars, up to fifty times the mass of the Sun, burst into supernovas, visible from Earth in daytime, and become incredibly dense neutron stars or black holes. In these moments of collapse, the intense heat and pressure can create all the known elements to form gases and dust which may eventually combine to form new stars, new planets and, as on Earth, new life.

The image above is of the supernova remnant Cassiopeia A, approximately 10,000 light years away, from a once massive star that died in a supernova explosion that was first seen from Earth in 1690

With

Martin Rees Astronomer Royal, Fellow of Trinity College, Cambridge

Carolin Crawford Emeritus Member of the Institute of Astronomy and Emeritus Fellow of Emmanuel College, University of Cambridge

And

Mark Sullivan Professor of Astrophysics at the University of Southampton

Producer: Simon Tillotson

Jaksot(1078)

Bertolt Brecht

Bertolt Brecht

Melvyn Bragg and guests discuss one of the greatest European playwrights of the twentieth century. The aim of Bertolt Brecht (1898-1956) was to make the familiar ‘strange’: with plays such as Mother C...

23 Touko 202459min

Napoleon's Hundred Days

Napoleon's Hundred Days

Melvyn Bragg and guests discuss Napoleon Bonaparte's temporary return to power in France in 1815, following his escape from exile on Elba . He arrived with fewer than a thousand men, yet three weeks ...

16 Touko 202458min

Lysistrata

Lysistrata

Melvyn Bragg and guests discuss Aristophanes' comedy in which the women of Athens and Sparta, led by Lysistrata, secure peace in the long-running war between them by staging a sex strike. To the men ...

9 Touko 202455min

Nikola Tesla

Nikola Tesla

Melvyn Bragg and guests discuss the Serbian-American inventor Nikola Tesla (1856-1943) and his role in the development of electrical systems towards the end of the nineteenth century. He made his nam...

2 Touko 202452min

The Kalevala

The Kalevala

Melvyn Bragg and guests discuss the Finnish epic poem that first appeared in print in 1835 in what was then the Grand Duchy of Finland, part of the Russian Empire and until recently part of Sweden. T...

25 Huhti 202450min

Julian the Apostate

Julian the Apostate

Melvyn Bragg and guests discuss the last pagan ruler of the Roman Empire. Fifty years after Constantine the Great converted to Christianity and introduced a policy of tolerating the faith across the ...

18 Huhti 202450min

The Waltz

The Waltz

Melvyn Bragg and guests discuss the dance which, from when it reached Britain in the early nineteenth century, revolutionised the relationship between music, literature and people here for the next hu...

11 Huhti 202452min

The Mokrani Revolt

The Mokrani Revolt

Melvyn Bragg and guests discuss the revolt that broke out in 1871 in Algeria against French rule, spreading over hundreds of miles and countless towns and villages before being brutally suppressed. I...

4 Huhti 202457min

Suosittua kategoriassa Historia

olipa-kerran-otsikko
gogin-ja-janin-maailmanhistoria
mayday-fi
huijarit
totuus-vai-salaliitto
mystista
tsunami
rss-ikiuni
konginkangas
rss-subjektiivinen-todistaja
rss-i-dont-like-mondays-2
rouva-diktaattori
sotaa-ja-historiaa-podi
tiedetta-ja-sirkushuveja-vanhojen-aikojen-podcast
rss-kirkon-ihmeellisimmat-tarinat
rss-peter-peter
romani-podcast
rss-iltanuotiolla
rss-sattuu-sita-suomessakin
rss-kalmakabinetti