Gradual Blur and Gradient in Illustrator

[laura sofiac3968549]

Hi. I'm learning how to work with gradients and fades, and looking for examples to recreate I found this. I've been trying to do it but i can't get it to look like that. How can I do an effect like this in Illustrator?

 

[Monika Gause · Accepted solution]

Two ellipses and a rectangle. And then create a blend between the ellipses:

[laura sofiac3968549]

Thank you so so much!!!