Hubble Telescope. It was launched into low orbit in 1990.

[ You know what, Steve wastes no time closing the distance between them, and sprawls half-on Bucky, his head resting over Buck's heart, and turns to grin at him. ]

Last I checked, I didn't need a lotta sleep. What d'you say pal? We can take a tent up if you start feelin' nostalgic.

[ He's not as funny as he thinks he is, probably. ]