Place spacecraft in heliocentric orbits at Jupiter's L4 and L5 Lagrange points, where the Trojan asteroids are. Perhaps two radio telescopes for VLBI.
Motivation is that those orbits might be extremely stable, relying on the hugeness of Jupiter. Are they actually stable, compared to other possible orbits? Probably need to consider billions or trillions of years.
Will they quickly get destroyed by asteroid collisions? How dense are the Trojan asteroid fields?
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