# Alternatives to an ozone layer

Our home planet earth has low concentration of ozone in its atmosphere, protecting it from UV radiation, could Exoplanets share the same method but have a different gas in the atmosphere which has a similar role of absorbing UV radiation?

• I couldn't substantiate my claims, comment removed. – Magic Octopus Urn Sep 17 '19 at 19:35
• Practially any atmospherical component with a high UV absorbtion does it. It does not need to have such a self-regenerative mechanism than of the Earth. – peterh - Reinstate Monica Sep 17 '19 at 19:47

This compound, $$\text{S}_2\text{O}_2$$, is proposed in Geophysical Research Letters as the UV absorber, based on computer models. The authors admit that thus hypothesis requires further modeling (and implicitly, data from exploration that more rigorous models might need) to be developed further.