Here is a bit more detailed info about this mission.
Parker Solar Probe: The Mission
This launch will be a great one to see in person.
I think this is the first multi engine launch vehicle of this size since the last shuttle launch, very impressive to see / feel in person!
We stand to learn so much from this mission. Learning more about how the conditions on the sun affect our weather and electro magnetic atmosphere.
A few of the things we have gained from our space efforts. GPS, sat weather observation, sat surface observation for both scientific and military use, PV solar panels. These alone are very significant, Im sure there are many others too.
Cheers Richard