Because there is so much less atmosphere for the sun to penetrate, I can be burning up in the sun and needing a jacket in the shade. (sbnation.com)
By filling up the tank, there is less atmosphere in the tank to allow the gas to go bad. (mechanics.stackexchange.com)
Based on what TESS finds, we're therefore going to be starting with bigger planets that have a lot of atmosphere, and as we get better instruments, we're going to move towards smaller and smaller planets with less atmosphere. (earthsky.org)