Okay so I talked this out with Dev and like in space the Asteroid has definitely encountered other ships and Magneto has likely by now raided a few small starships, so we have those to be able to explore in. He was totally sending people back to like check out the sphere, give him recon, but I could see him sending Raven to try and kill Wicked (tie up loose ends) and finds out about the kids that way. Later Mags will send both Raven and Regan (who with their abilities would both be able to manipulate their way through shapeshifting and vision-inducing into the Sphere in their ship) to kidnap/recruit more mutants- like if there are Magneto is Right dissenters then maybe they'd just come along willingly- and kidnap one of the kids. Sound good?