Cosmic Breakthrough as Webb Detects Carbon Dioxide on Young Alien Planets

Giant Exoplanets in HR 8799 System Likely Formed Like Jupiter and Saturn The first exoplanet was discovered in the 1990s, but astronomers didn’t capture a direct image of one until more than a decade later. Imaging exoplanets is incredibly challenging because their host stars are often thousands of times brighter and much larger than the [...]