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test  
SoHO (Solar and Heliospheric Observatory) was launched in December 1995 in an orbit around the first Lagrange point. This is a point directly between the Earth and the Sun where the gravitation forces balance such that SoHO always stays between them. This point is about 1% of the distance to the Sun, about 1,000,000 miles, four times further away than the Moon.
 
 

The SoHO orbit at the L1 point.
 

Trace (Transition Region And Coronal Exploror) was launched in April 1998 on a Pegasus XL rocket.