eli5: How are we accurately able to study far off cosmic objects if our primary source of information is from light (that sometimes has traveled to us for 1000’s of years). Am I missing something?

Question

eli5: How are we accurately able to study far off cosmic objects if our primary source of information is from light (that sometimes has traveled to us for 1000’s of years). Am I missing something?

In: 8

Answer 1

A lot of info has been obtained from probes and spacecraft like Cassini, voyager and others. They took pics of the solar system from much closer to the planets.