Astronomers have discovered yet another exoplanet to add to their growing list of other worlds that exist outside of our solar system. While thirty years ago, nobody knew if exoplanets existed, astronomers have quickly realized that they are quite common in the universe. Now the biggest question is how many exoplanets exist that are similar to Earth and might even harbor extraterrestrial life? This is why astronomers are so intrigued by a new exoplanet dubbed LP 791-18d.
