Event · discovery
The living moon
2430s–2440sSee it on the interstellar map →
Biological oxygen on a moon of Gliese 876 b.
Read more in The long middle
The living moon (2430s–2440s). Sun-lens telescopes find oxygen air on a moon of Gliese 876 b, the Lifeboat's destination, and its spectrum shows the oxygen is biological (see Life beyond Earth).