Satellites

Blog about satellites: launches, operations, studies, fall.

The Smile satellite blasting off atop a Vega-C rocket (Photo ESA-S. Corvaja - ESA Standard License)

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A few hours ago, the Smile satellite was launched from the Kourou Spaceport in French Guiana atop a Vega-C rocket. After about 56 minutes, the Smile satellite separated from the rocket’s last stage and began maneuvers that are scheduled to last approximately 25 days. Eleven burns of the spacecraft’s engines will lengthen its orbit, initially circular at an altitude of approximately 700 kilometers, to approximately 121,000 kilometers above the North Pole and approximately 5,000 kilometers above the South Pole.

The Bluebird 7 satellite blasts off on a New Glenn rocket (Image courtesy Blue Origin)

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Confirmation has been received that AST SpaceMobile’s Bluebird 7 satellite will fall back to Earth after entering an orbit too low to reach the required level for direct cell phone communications. The problem emerged on Sunday, shortly after separation from Blue Origin’s New Glenn rocket’s second stage. Initial investigations quickly identified the mishap as a consequence of a malfunction of the second stage.

A Falcon 9 rocket lifting off on the Twilight rideshare mission (Image courtesy SpaceX)

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A few hours ago, a Falcon 9 rocket launched from Vandenberg Air Force Base on the Twilight rideshare mission, carrying a total of 40 satellites in various phases. About two hours and twenty minutes after launch, the final group of satellites was deployed by SpaceX’s system. Among them were NASA’s Pandora Space Telescope and the BlackCAT and SPARCS nanosatellites, both 30x20x10-centimeter CubeSat-class satellites, part of NASA’s CubeSat Launch Initiative. These satellites will conduct their astronomical observations from low-Earth orbit.

The Sentinel-6B satellite blasting off atop a Falcon 9 rocket (Image courtesy SpaceX)

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A few hours ago, the Sentinel-6B satellite was launched atop a Falcon 9 rocket from the Vandenberg base. After about 57 minutes, it successfully separated from the rocket’s last stage and set off on its course to reach the polar orbit at 1,336 kilometers altitude where its scientific mission will begin, taking over from the Sentinel-6A Michael Freilich satellite, which was launched on November 21, 2020.

The Sentinel-1D satellite blasting off atop an Ariane 6 rocket (Photo courtesy ESA-CNES-ARIANESPACE/Optique vidéo du CSG–P. Piron. ESA Standard Licence)

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A few hours ago, the Sentinel-1D satellite, part of the Copernicus / GMES, was launched from the Kourou spaceport, in French Guiana, atop an Ariane 6 rocket. After about 34 minutes, the satellite regularly separated from the rocket’s last stage and started sending signals. Its final orbit in low Earth orbit will be at an altitude of about 693 kilometers.