An illustration about the 5 space probes presently on journeys that will take them outside of our solar system, Voyagers 1 & 2 (right of image), Pioneers 10 (top right) & 11 (front left) & New Horizons (middle left). Only one, Voyager 1, has moved beyond the solar system, in 2012, leaving the 'bubble' called the heliosphere in which our sun's solar winds act, with Voyager 2 following in 2019 and sending data back about previously unknown boundary layers between the heliosphere and interstellar space known as the heliopause. The diagrams I've included in the background were added to the Voyager crafts, designed for any intelligent life they might encounter as they continue drifting through space once they lose power, as messages and instructions about how to find us, and how to listen to the "Sounds of the Earth" gold record they carry featuring spoken greetings, sounds and music that reflected human diversity (they're furnished with a stylus and cartridge to play the record).
Pioneer 10, launched in 1972, and Pioneer 11 in 1973, also carry diagrams with them on golden plaques, including a depiction of a man and a woman, and all four craft have the same pulsar 'map' designed to show Earths location in relation to the energy beam pulse signals that happen to point towards Earth from 14 neutron stars due to the angle at which they rotate. At the time this was thought the most stable way to map out our location, through their pulse frequency and by their approximate position from the Sun, however being that since then it's been discovered that there are a billion pulsars in the Milky Way, and that which pulsars point their pulses at Earth will change unpredictably over time, the map is in hindsight not going to be very easy to decipher!  
New Horizons, launched in 2006, studied Pluto and its moons for the first time (when it left Earth Pluto was still a planet but demoted to a dwarf planet by the time it reached there in 2015!) and then in 2019 flew past 2014 MU69 in the Kuiper belt, the most distant object ever explored.
Trying to creatively illustrate this (loosely!) as a non-astrophysicist has been an interesting task…but the more I read about them the more fascinating it sounded that they will journey continuously into unknown interstellar space, moving eternally further away from us!

New Horizons, Indian ink with digital colour, 2020

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