141 AU which is equal to 141 times the distance between Earth and Sun, Voyager 1 is able to travel the most in history. Even after traveling at the speed of 17 km/sec in space, which may sound a lot, it will take 1,700,000,000 years for Voyager 1 to cross the Milky Way Galaxy. Proxima Centauri, the second closest star from Earth after Sun is 4.2465 light years away and it would take 40,000 years for Voyager 1 to reach it. Parker Solar Probe recorded the highest speed in space which is 692,000 km/h and still, it would take more than 50,000 years to reach destinations like Proxima Centauri.
Now if we need to explore exoplanets, the factor we need to develop is speed. Out of many ways, the most well-known way to travel faster in space is Warp Drive where we use Antimatter to gain speed. Antiatoms are successfully built and research over Antimatter is being done. Big Bang should have produced a huge amount of Antimatter which may be lying far away in Universe
The James Webb Space Telescope is the largest, most powerful, and most technologically challenging space telescope ever built. The Webb Telescope is so large it must be folded like origami to fit inside its rocket fairing for the ride into space. Once in space, unfolding and readying Webb for science is a complex process that will take about six months. Webb is designed to see the most distant galaxies in the Universe and study how galaxies evolved over cosmic time. Webb will study planets orbiting other stars looking for the chemical signatures of the building blocks of life. Webb will also study planets within our own solar system. The Webb Telescope Mission is an international space telescope program led by NASA with its partners, the European Space Agency and the Canadian Space Agency.