List of artificial objects leaving the Solar System: https://en.wikipedia.org/wiki/List_of_artificial_objects_lea...

New Horizons 2: https://en.wikipedia.org/wiki/New_Horizons_2 :

> ~Thruster fuel cost

With commercial uplink as a service these days, what is a realistic multi-decade program cost for a deep space probe with DSN Deep Space Network or better for communications?

Could a solar sail like IKAROS or LightSail2 do Pluto or interstellar? Made of UV-resistant Lignin-Vitrimer with Lignin-derived Carbon Fiber?

Timeline of Solar System exploration: https://en.wikipedia.org/wiki/Timeline_of_Solar_System_explo...