Image Details
Caption: Figure 3.
Computed pre-main-sequence evolution of water loss and oxygen production for the TRAPPIST-1 planets assuming inefficient surface sinks. These results represent the maximum build-up of oxygen in the atmosphere. The maximum ocean inventory assumed was 20 Earth oceans, all of which may be lost for planets b, c, and d. Planet h may lose less than one ocean of water.
© 2018. The American Astronomical Society.