CI Tau b is a paradoxical planet, but new research about its mass, brightness and the carbon monoxide in its atmosphere is starting to answer questions about how a planet so large could have formed around a star that’s only 2 million years old.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/1-directfromdi.jpg)
Source:
https://phys.org/news/2019-06-spectrographic-analysis-yields-empirical-benchmark.html