Active stars like Proxima Centauri may produce false positives for exoplanet biosignatures. Life not needed to produce atmospheric O2 & O3.
-
-
Replying to @NASAWebb
give one example of something other theb life that create enormous amount of atmospheric O2 ?
2 replies 0 retweets 2 likes
Replying to @MatteMatte31
A photochemical mechanism by titanium (IV) oxide can produce O2 from liquid H20 under near UV light: http://www.nature.com/articles/srep13977 …
1:25 PM - 25 Aug 2016
0 replies
0 retweets
2 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.