Nope, it's not the mutant villain/anti-hero/hero of X-Men fame, but an entire planet...
Written by Joe Gill and illustrated by Steve Ditko, this tale of menace and magnetism from Charlton's Space Adventures V2N5 (1969) is scientifically-inaccurate, but fun.
and isn't that what comics are all about?
You may recognize the splash panel as the cover for this issue...
...which we ran when we presented the other cover-featured story a couple of weeks ago.
Charlton had a tendency to re-use/recompose interior art for covers, especially with their anthologies.
Whether it was for budget or deadline reasons has been lost to the mists of history.