solar orbiter

Pioneer 5

Mar 1, 1960

Pioneer E

Aug 1, 1969

Helios A

Nov 1, 1974

ISEE3

Dec 1, 1983

Ulysses

Oct 1, 1990

Wind

Nov 1, 1994

SOHO

Dec 2, 1995

ACE

Aug 1, 1997

Génesis

Aug 1, 2001

STEREO A

Oct 1, 2006

DSCVR

Feb 1, 2015

Solar Parker

Oct 1, 2018

Solar Orbiter

Feb 1, 2020