Exoplanet GJ3470b_UW-Madison (IMAGE) University of Wisconsin-Madison Caption The sulfur-laden atmosphere discovered on gaseous exoplanet GJ 3470 b, show here in an illustration orbiting its star in the constellation Cancer, could help researchers figure out how it (and similar planets) were formed. Credit University of Wisconsin–Madison Usage Restrictions For editorial use with attribution License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.