it depends how far you are talking ... there is the Voyager 1 and 2
The Voyager 1 spacecraft, launched on Sept. 5, 1977, is about 17 billion kilometers (11 billion miles) away from the sun. It is the most distant active spacecraft.
The Voyager 2 spacecraft, launched on Aug. 20, 1977, is about 14 billion kilometers (9 billion miles) away from the sun. It is the longest continuously operating NASA spacecraft
In four to six years, Voyager 1 is expected to cross beyond the heliosheath, the outer layer of the bubble around our solar system that is composed of ionized atoms streaming outward from our sun. Voyager 2 is expected to cross that boundary several years later. Once beyond our heliosheath, the two Voyager spacecraft will begin exploring the interstellar medium, which fills the space between stars.
We can and have reached all the planets in the outer part of our solar system. The Voyager 2 mission got all the way to Neptune, and it will eventually leave this solar system but will stop transmitting by that time. The New Horizon mission, a flyby probe, will visit Pluto and keep going into the Kuyper Belt. None of our flyby probes are powerful enough, or travel fast enough, to visit planets in other solar systems and keep transmitting data.
Well I have not keep up, that is cool.
Speed developed is not enough to reach near most of the planets around