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SpaceX Crew-11 : retour sur Terre réussi après une urgence médicale inédite dans l’ISS

spacex crew 11 retour

Fin de l’alerte pour la Station spatiale internationale. La capsule Dragon de SpaceX a amerri avec succès ce jeudi matin dans le Pacifique, ramenant sur Terre les quatre membres de la mission Crew-11. Ce retour anticipé, dicté par une urgence médicale inédite en 25 ans, s’est déroulé sans encombre. L’équipage est désormais pris en charge au sol.

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Rupture dans le spatial : l’ex-PDG de Google Eric Schmidt finance de puissants télescopes sans aide publique

Eric Schmidt et son épouse Wendy financeront, via leur organisation philanthropique Schmidt Sciences, quatre instruments astronomiques de pointe présentés le 7 janvier 2026 lors d’une réunion de l’American Astronomical Society, une société savante regroupant des astronomes aux États-Unis. Cette annonce intervient dans un contexte de coupes budgétaires dans le monde de la science.

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How Many Years Left Until the Hubble Space Telescope Reenters Earth's Atmosphere?

"The clock is ticking" on the Hubble Space Telescope, writes the space news site Daily Galaxy, citing estimates from the unofficial "Hubble Reentry Tracker" site (which uses orbital data from the site space-track.org, created by tech integrator SAIC): While Hubble was initially launched into low Earth orbit at an altitude of around 360 miles, it has since descended to approximately 326 miles, and it continues to fall... "The solar flux levels are currently longer in duration and more elevated than previously anticipated, resulting in an earlier reentry forecast for the Hubble Space Telescope if no reboost mission is conducted," Hubble Reentry Trackersays the Hubble Reentry Tracker... ["Hubble has been reboosted three times in its history," the site points out, "all by servicing missions using the Space Shuttle."] NASA partnered with SpaceX in 2022 to explore the feasibility of raising Hubble to its original altitude of 373 miles. Such an adjustment would have bought Hubble a few more years in orbit. However, the future of this plan remains uncertain, as NASA has not made any official announcements to move forward with it... Solar flux levels, which determine atmospheric drag, have increased in recent years, accelerating the telescope's decline. This change in solar behavior means that the possibility of Hubble reentering Earth's atmosphere in the next five to six years is quite high if no corrective action is taken. ["But it is difficult to estimate this value due to the variability of future solar flux," the site cautions. "In the best case, Hubble may not reenter for 15 more years, around 2040. In the worst case, it could reenter in 4 years..."] Once Hubble reaches an altitude of 248 miles, it is expected that it will have less than a year before reentry... While Hubble's end may be near, there is a promising new project on the horizon: Lazuli, a privately-funded space telescope funded by former Google CEO Eric Schmidt. Lazuli aims to become the first privately-funded space telescope, and it could be the successor Hubble enthusiasts have been hoping for. Schmidt Sciences, the organization behind the telescope, plans to launch Lazuli by 2028, providing a more modern alternative to Hubble with a larger mirror and enhanced capabilities. The telescope's proposed design includes a 94-inch-wide mirror, which is a significant upgrade from Hubble's 94.5-inch mirror, and will feature updated instruments to capture more detailed data than ever before.

Read more of this story at Slashdot.

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