Rising fast

As the 25 Years of Progress in Radar Altimetry Symposium in the Azores draws to a close, Anny Cazenave from the Laboratoire d’Etudes en Géophysique et Océanographie Spatiales, France, joins ESA web TV to explain how satellite altimeters have revealed that sea level is rising, on average, by 3 mm a year – but over the last five years this rate has accelerated to almost 5 mm a year.

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ESA is 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.

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Altimetry explained

With the 25 Years of Progress in Radar Altimetry Symposium underway in the Azores, Dr Marcello Passaro from the Technical University of Munich joins ESA web TV to explain how satellite altimeters measure the height of the sea surface. This information is essential for monitoring sea-level rise.

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ESA is 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.

Copyright information about our videos is available here: http://www.esa.int/spaceinvideos/Terms_and_Conditions

Earth from Space: Northeast Ethiopia

In this episode of #EarthfromSpace, the Copernicus Sentinel-1 satellite takes us over Northeast Ethiopia.

Go to our website to download this image: http://www.esa.int/spaceinimages/Images/2018/09/Northeast_Ethiopia

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ESA is 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.

Copyright information about our videos is available here: http://www.esa.int/spaceinvideos/Terms_and_Conditions

La science dans… Ghost in the shell [#41]

“Whaa ! Une tête dans un bocal ! Comme c’est kitsch !”
-Gunnm- Yukito Kishiro

Tout nouveau, tout chaud le Utip :
https://www.utip.io/LSDLF

Tipeee : http://www.tipeee.com/lsdlf

Twitter : https://twitter.com/C_2_points

Facebook : https://www.facebook.com/pages/C2Points-La-Science-Dans-La-Fiction/964717920229108

Sources :

https://www.futura-sciences.com/sciences/definitions/metamateriaux-metamateriau-4437/

http://www.cnrs.fr/publications/imagesdelaphysique/couv-PDF/IdP2010/06_Capes_invisibilite.pdf

http://www.leparisien.fr/societe/la-cape-d-invisibilite-existe-25-11-2017-7414137.php

https://lejournal.cnrs.fr/billets/les-surprenantes-proprietes-des-metamateriaux

https://quoidansmonassiette.fr/comment-pourrait-on-faire-cape-invisibilite-avec-metamateriaux/

https://fr.wikipedia.org/wiki/Lockheed_Martin_F-22_Raptor#Furtivit%C3%A9

https://lejournal.cnrs.fr/articles/metamateriaux-linvisibilite-reinventee

https://www.futura-sciences.com/sciences/actualites/physique-metamateriaux-forets-lutter-seismes-20042/

https://www.futura-sciences.com/sciences/videos/devenir-invisible-grace-lentilles-rochester-cloak-585/

Earth from Space: Mount Mayon

Explore the Philippines’ Mount Mayon, one of the world’s most active volcanoes, in this episode of Earth from Space, presented by Kelsea Brennan-Wessels from the ESA Web TV virtual studios.

See also http://www.esa.int/spaceinimages/Images/2018/05/Mount_Mayon_Philippines to download the image taken by the Copernicus Sentinel-1 satellite.

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ESA reentry expertise

Every week, on average, a substantial, inert satellite drops into our atmosphere and burns up. Monitoring these reentries and warning European civil authorities has become routine work for ESA’s space debris experts.

Each year, about 100 tonnes of defunct satellites, uncontrolled spacecraft, spent upper stages and discarded items like instrument covers are dragged down by Earth’s upper atmosphere, ending their lives in flaming arcs across the sky.

Some of these objects are big and chunky, and pieces of them survive the fiery reentry to reach the surface. Our planet, however, is a big place, mostly covered by water, and much of what falls down is never seen by anyone, sinking to the bottom of some ocean, or landing far from human habitation.

While still in orbit, these and many other objects are tracked by a US military radar network, which shares the data with ESA, since Europe has no such capability of its own.It’s the task of ESA’s Space Debris team to look at these data and issue updates to ESA Member States and partner civil authorities around the globe.

Le LIDAR : d’APOLLO 15 à la voiture autonome – Spatialiste #22- String Theory

Après le RADAR et le SONAR, découvrez le LIDAR, une technologie mise en place pour la mission APOLLO 15
Cliquez-ici pour vous abonner : http://bit.ly/substringth

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String Theory c’est le rendez-vous hebdo de la science pop !
Tous les jeudis à 18h , retrouvez une vidéo inédite de vos Youtubeurs science préférés sur String Theory !

CREDITS

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