James Webb

It's been 30 years since the first planet was discovered around a star like our Sun. With each new discovery, scientists are getting closer to answering whether there are other planets like Earth that could host life as we know it. Credit: NASA/JPL-Caltech

We've crossed the 6,000-plus exoplanet mark — and some of them are stranger than science fiction planets

NASA has so far verified 6,000 exoplanets - a vast collection of alien worlds, from fiery giants and oceans of lava to stars with "gemstone" clouds or a density similar to Styrofoam.