Rigel-3 was a planet that was destroyed by the Black Stars.
Thanos claimed that one of his doubles, allied with Mangog, had destroyed the planet, and he decide to apologize by helping the Rigellian colony of New Rigel-3.
It was seemingly rebuilt and re-peopled, as Karnak and Gorgon visited the planet in the search of the Rigellian Recorder 236A67, possessing codes to hack into the Skrulls' communications.
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