Lockheed Martin has announced plans to acquire Aerojet Rocketdyne in a deal worth $4.4 billion. Lockheed expects the acquisition to close in the second half of 2021. Lockheed Martin is the prime contractor for NASA’s Orion spacecraft to send astronauts to the Moon. Aerojet Rocketdyne provides the RS-25 and RL-10 engines on NASA’s Space Launch System.

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