Un succès pour Falcon Heavy de SpaceX
Lire https://air-cosmos.com/article/le-falcon-heavy-russit-une-mission-ambitieuse-10470…
Drones stratosphériques HAPS, Internet et la 5G
HAPS : High Altitude Pseudo Satellite The solar-powered HAWK30 has a wingspan of approximately 79m (260ft), is propelled by 10 electric motors and carries lithium ion batteries. It has a cruise speed of 59kt (110km/h). The unmanned air vehicle (UAV) is designed to carry cellular network transmitting equipment aloft…
Les constellations Internet en orbite basse
Source : Les Echos du 16-05-2019…
Imagerie satellite à vendre
Source: Les Echos…
Ariane 6
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Falcon Heavy de SpaceX
http://www.air-cosmos.com/carton-plein-pour-le-falcon-heavy-de-spacex-122635…
Trou noir
En savoir plus https://fr.wikipedia.org/wiki/Trou_noir_supermassif https://www.futura-sciences.com/sciences/actualites/univers-premiere-image-trou-noir-supermassif-commentaires-aurelien-barrau-51210/…