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Home Aaron Curtis, a post-doctoral scholar at JPL, measures gases inside an ice cave. Carbon dioxide levels can be especially high inside the caves, so gas monitors are necessary for safety. (Dylan Taylor) Aaron Curtis, a post-doctoral scholar at JPL, measures gases inside an ice cave. Carbon dioxide levels can be especially high inside the caves, so gas monitors are necessary for safety. (Dylan Taylor)

Aaron Curtis, a post-doctoral scholar at JPL, measures gases inside an ice cave. Carbon dioxide levels can be especially high inside the caves, so gas monitors are necessary for safety. (Dylan Taylor)

Aaron Curtis, a post-doctoral scholar at JPL, measures gases inside an ice cave. Carbon dioxide levels can be especially high inside the caves, so gas monitors are necessary for safety. (Dylan Taylor)

Aaron Curtis, a post-doctoral scholar at JPL, measures gases inside an ice cave. Carbon dioxide levels can be especially high inside the caves, so gas monitors are necessary for safety. (Dylan Taylor)

Aaron Curtis, a postdoctoral scholar at JPL, traveled to Antarctica this past December, where he tested robots and instruments designed for icy worlds like Europa. (Nial Peters)
Aaron Curtis, a postdoctoral scholar at JPL, stands next to an ice tower. These towers form over caves as gases escape and freeze in the open air. (Nial Peters)