🚩The Anarchy was a period of civil war and unsettled government in England, often known as The Nineteen Year Winter, that occurred during the reign of King Stephen of England (1135–1154). In this 6-part series I will cover this turbulent period.
🚩Thanks to Bert’s Battles for his work on this series – check out their channel for more history content https://www.youtube.com/@BertsBattles
📢 Narrated by David McCallion
🎼 Music: EpidemicSound.com Filmstro
Sources: Bradbury, J. (2011) Stephen and Matilda: the Civil War of 1139-53. ISBN: 978 07524 71921. Davis, R. H. C. (2013) King Stephen 1135-1154. ISBN: 13: 978-0-582-04000-7. Hanley, C. (2020) Matilda: Empress, Queen, Warrior. ISBN: 978-0-300-25147-0. King, E. (2012) King Stephen. ISBN: 978-0-300-18195-1. William of Malmesbury (2016) Chronicle of the Kings of England: from the Earliest Period to the Reign of King Stephen. ISBN: 9781518363320.
Produced for our online ESA Open Day 2020, a 19-part whistle-stop tour around ESA’s largest establishment and technical heart: ESTEC, the European Space Research and Technology Centre, in Noordwijk, the Netherlands.
We are Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related.
Here at ESA, the European Space Agency, space is our business. It’s a place we explore, heading outwards while also looking back, to improve life on our own blue planet. Why go out there? Because space is useful and valuable; because it’s the place we all live. That’s why ESA does what we do: because Earth is only the start. Here’s what you need to know about the stuff that surrounds us.
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We are Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related.
Advanced scientific note about Doppler: If there is a light moving away from you at constant velocity in static flat (Minkowski) space-time, no matter how red it is, you will never conclude it is going faster than light. But, here I am discussing the conclusions one might come to if you mistakenly use Doppler in the context of the curved space-time of the universe (where there is expansion). Interpreting the huge redshift as a result of the doppler effect, could make one think that galaxies we see are moving away at speeds approaching light speed. And since what we are actually seeing is light from those galaxies from billions of years ago, and given that the universe is expanding, you might be tempted to say that they have since “accelerated” to faster than the speed of light. You might go further and say that there are more distant galaxies that we can’t see which are moving away even faster. So you might conclude there are galaxies moving faster than light in the universe. But the redshift isn’t from doppler and this “acceleration” of the expanding universe isn’t actually causing a true increase in velocity.
Sometimes astronomers do say there is a faster than light “recession speed” by pretending the expansion of the universe is causing distant galaxies to move away from each other at a corresponding velocity, but that’s misleading. In general relativity, you can actually have an increase in space between objects without causing a corresponding increase in the relatives velocities of those objects.
Special thanks:
Marissa Giustina
Nick Hutzler
Julie Elksy
Byron Drury
Jacob Barandes
Tyler Howe
Lissy Herman
Ari Daniel
Lauren Aguirre
Kristine Allington
Allison Eck
Anna Rotschild
MEDIA CREDITS:
Music provided by APM:
Deep_Science_No-perc
Mysteries_of_Science_B
Dreaming_of_the_Stars_a
Curiosity_Kills_the_Cat_2
Conundrum_a
Images:
Stars – Rene Barrios
Earth – Eirika
galaxy spiral (by coornio – diviantart)
Squirrel with scissors – 60811670 – Dollarphotoclub
Equations – 91613623 – Dollarphotoclub
Maxresdefault – Sean Stewart
Marissa Giustina – Lammerhuber
Tangled cat – David Swayze
Cat doll – Vicky Somma
Stock footage:
train-exits-tunnel – Pond5
Bin_pulsar_442 – Courtesy of Nasa
Expanding in space (40294) – Courtesy of Nasa
WMAP_archive – Courtesy of Nasa