Life Beyond Earth

Astrobiology, exoplanets, biosignatures and potentially habitable environments.

3articles

Representação editorial de K2-18 b com um espectro de transmissão do JWST ao fundo, sem sugerir que vida tenha sido confirmada.

Life Beyond Earth08/08/20268 min read

K2-18 b and the supposed biosignature: what the JWST detected, what was disputed and what remains to be said in life

JWST found spectral signals compatible with DMS/DMDS on K2-18 b, but reanalysis shows the identification is not robust — and this does not prove life.

Read article

Ilustração de LHS 1140 b diante de sua estrela anã vermelha, com uma camada atmosférica sutil representando o escape de hélio.

Life Beyond Earth07/08/20268 min read

LHS 1140 b: Why the first detection of atmosphere on a rocky planet in the habitable zone matters without being evidence of life

Study in Science detected helium escaping from LHS 1140 b. The finding indicates an atmosphere on a rocky world in the habitable zone, but is not a sign of life.

Read article

Ilustração conceitual de um observatório espacial examinando um pequeno exoplaneta próximo de uma estrela distante.

Life Beyond Earth07/08/20268 min read

Habitable Worlds Observatory: What NASA needs to find out before looking for life on exoplanets

NASA has opened a call to reduce HWO scientific uncertainties, from habitable worlds and stellar targets to dust, atmospheres and biosignatures.

Read article