Exoplanet sets new record for heaviest elements detected in atmosphere.

Chinese astronomers used the ESPRESSO spectrograph to investigate the atmosphere of MASCARA-4b, an ultra-hot Jupiter exoplanet. They detected rubidium and samarium in an exoplanet's atmosphere for the first time, along with ions of titanium and barium. The study also confirmed previous detections of magnesium, calcium, chromium, and iron in the atmosphere of MASCARA-4b. The researchers encourage further atmospheric studies of exoplanets to find other rare elements.