ESA – Samba’s fiery farewell recorded

Samba’s trajectory had been modified by its mission management crew already in November 2024 to make sure a protected, distant reentry over the Pacific Ocean. It was then adjusted barely in January 2026 so a aircraft filled with scientists and their devices might fly out to watch it. The spacecraft’s personal knowledge and placement had been mixed with observations made with telescopes to foretell its reentry time and placement as exactly as doable.

The ultimate prediction turned out to have been correct to the second, reflecting the teachings discovered from the primary two focused reentries of Cluster satellites Salsa and Rumba.

The reentry picture from the aircraft was made with a so-called monitoring digicam, used to verify that Samba is the place it’s alleged to be. It exhibits the environment, offering context such because the state of fragmentation and relative positioning of the fragments. The monitoring cameras are complemented by different devices that search for the presence of particular supplies in the identical discipline of view. This then helps scientists determine which a part of the spacecraft we’re on their quest to grasp how precisely the demise takes place.

Processing the information and pictures collected onboard the aircraft, caught by 29 of the 30 devices, takes time. The ROSIE crew, 11 hours forward of Central European Time, has to prioritise sleep and the preparations to repeat the remark experiment as soon as extra with Tango.

We will anticipate to see extra, together with video footage, as soon as the Tango reentry has additionally been noticed later tonight.

Worth of reentry science

“With higher knowledge on precisely when and the way reentering satellites warmth up, break up, and which supplies survive, engineers can design satellites that dissipate fully, so-called design-for-demise satellites, whereas additionally stopping air pollution of the ambiance,” says Stijn Lemmens, performing Head of Area Particles at ESA.

“This reentry knowledge could be very arduous to get. A lot work has gone into this experimental undertaking, however we’ve managed to seize the whole lot of Samba’s demise – crucially counting on us implementing the teachings discovered from the Salsa marketing campaign again in 2024 – supplying us with a wealth of information. Your entire crew, from the various concerned in figuring out and guaranteeing the exact trajectory of Samba to the ROSIE crew flying out to fulfill it on a aircraft, might be so very proud at this time.”

Saying goodbye to Samba

Right this moment and tomorrow are days of combined emotions at ESOC, ESA’s European Area Operations Centre in Darmstadt, Germany. The official finish to the Cluster mission was in 2024, however its knowledge continues to convey scientists collectively, as do the ultimate reentries of the final two satellites. The Cluster ‘household’ has gathered yet another time to have a good time all of the recollections and achievements and share the bittersweet second of goodbye.

Yesterday, Cluster’s flight management crew despatched their final instructions to Samba, every saying goodbye, till it was time for the spacecraft to reenter. The crew misplaced the ultimate sign from the spacecraft through Kourou for the final time at 23:26 CEST.

Tonight, they may talk with Tango as soon as extra, sending the ultimate instructions and receiving the final of the telemetry of the Cluster mission. 

Time to Tango

Right this moment, the story will unfold its ultimate act with the final Cluster reentry of Tango. Its reentry is predicted for at this time, 1 September, 21:30:31 UTC / 23:30:31 CEST, with an uncertainty left of +/- 10 seconds both approach.

You’ll be able to observe alongside the motion on our live blog.