The first-ever mission to pull a dead rocket out of space has just begun

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"More than 9,000 metric tons of human-made metal and machinery are orbiting Earth, including satellites, shrapnel, and the International Space Station. But a significant bulk of that mass comes from one source: the nearly a thousand dead rockets that have been discarded in space since the space age began.

Now, for the first time, a mission has begun to remove one of those dead rockets. Funded by the Japanese space agency JAXA, a spacecraft from the Japanese company Astroscale was launched on Sunday, February 18, by the New Zealand firm Rocket Lab and is currently on its way to rendezvous with such a rocket in the coming weeks. It’ll inspect it and then work out how a follow-up mission might be able to pull the dead rocket back into the atmosphere. If it succeeds, it could demonstrate how we could remove large, dangerous, and uncontrolled pieces of space junk from orbit—objects that could cause a monumental disaster if they collided with satellites or spacecraft.  ..."

"After an excellent start to on-orbit operations, Astroscale Japan has begun the rendezvous operations phase of its ADRAS-J mission today, February 22 at approximately 11:00 am UTC. In this phase, the operations team based in Japan and the UK will use ADRAS-J’s propulsion system to start maneuvering towards the client orbit. This initial rendezvous phase requires careful planning of several orbit raising maneuvers to ensure accurate, precise and safe approach to the client.

Rendezvous and proximity operations (RPO) are fundamental for any future on-orbit servicing, ensuring the safe and secure approach of servicer spacecraft to client spacecraft and other objects such as space debris. ADRAS-J is the world’s first attempt to safely approach and characterize an existing piece of large debris through RPO. Specifically, ADRAS-J is designed to rendezvous with an unprepared Japanese H2A upper stage rocket body, measuring approximately 11 meters in length, 4 meters in diameter, and weighing approximately 3 tons. ..."

The first-ever mission to pull a dead rocket out of space has just begun | MIT Technology Review Astroscale’s ADRAS-J spacecraft will inspect a dead Japanese rocket in orbit—a major moment in space-junk removal.

Astroscale’s ADRAS-J Mission Starts Rendezvous Operations