Jane Foster is an American astrophysist, who found Thor after he was banished to Earth by Odin.
She first appeared when we saw her and her co-workers Erik Selvig and Darcy Lewis chasing a storm which Thor fell out of. Jane became emotionally attached to the Asgardian, giving him temporary living accommodation (twice), buying him foods and drinks, and accompanying him to the site where his hammer Mjolnir fell, cordonod off by S.H.I.E.L.D. Thor went up against Agent Phil Coulson and was captured; Jane helped him break out. Jane was there when Loki Laufeyson, Thor's brother, sent the Destroyer to Earth. When Thor died, Jane ran over and cried over his body, and was delighted when he was resurrected. Jane waited for Thor to return from Asgard when the god left to fight Loki; when Thor did not return, Jane, Darcy and Selvig began research on how to open a portal back to Asgard.