Le rover Curiosity a brisé une roche en roulant dessus, dévoilant des cristaux clairs et laiteux. La zone étant riche en sulfates, il est très probable que ce soit des cristaux de gypse, parmi les plus beaux que je vois depuis le début de la mission ! 1/3
You first go slow - less than 100m/s (360kph, or 220mph) for the first stage, up to around 30-40km. This gets you above the thickest atmosphere. Then the second stage can take over with an engine more optimized for vacuum.
Ed Dwight became America’s first Black astronaut candidate some 60 years ago. He wasn’t picked for the 1963 class and that he would never experience the weightlessness of outer space. That changed on Sunday as Dwight, now 90, rocketed into space with Blue Origin, becoming the oldest person to take a space flight. The previous recordholder? William Shatner. Read more from AP: https://flip.it/2gimpG #Science#Space#SpaceExploration#BlueOrigin
Fingers crossed for my friends in the ESA #BepiColombo mission operations team & colleagues from industry as they work to restore the solar electric propulsion system to full power 🤞
The SEP system is critical to adjust Bepi’s trajectory between the various Mercury flybys, slowing the spacecraft down ahead of entry into orbit around this enigmatic innermost planet in December 2025.
Les paysages qui entourent Perseverance sont vraiment majestueux ces temps-ci. Le rover remonte le lit asséché de la rivière Neretva, qui perce le rempart du cratère Jezero, rempart qu'on voit ici en arrière-plan. Il s'élève à plusieurs centaines de mètres de haut !
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