Back in the good old days of ROM, his girlfriend Brandy Clark was visited by the light essence/ghost of slain Spaceknight STARSHINE who bestowed her light powers upon her.

Then she dug up the Starshine armor and a Wraith Warlock took advantage and merged her with it and gained control over her to kill ROM.

After that was dealt with she teamed with ROM, and turned vicious when her family and friends were slain. Later in ROM Annual 3 the villain HYBRID split her from the armor and as I recall it was left behind in the mines where they battled.

It has never been retrieved to my knowledge and the Spaceknights mini series years later nor other appearances of the Spaceknights addressed that.

IN Marvel Two in One 99, ROM and the THING take on the spaceknight armor of FIREFALL after the Wraiths animated it, thus making it like a Golem. ROM neutralized it and it fell to pieces to the ground but I do not recall it ever being retrieved by anyone.

Imagine the tech advantage one could get from reverse engineering that armor and its tech.