Biosignatures & Paleobiology: May 2020

We present four new secondary eclipse observations for the ultrahot Jupiter WASP-121b acquired using the Hubble Space Telescope Wide Field Camera 3.

After examining a dozen types of suns and a roster of planet surfaces, Cornell University astronomers have developed a practical model -- an environmental color "decoder" -- to tease out climate clues for potentially habitable exoplanets in galaxies far away.

Upcoming biosignature searches focus on indirect indicators to infer the presence of life on other worlds. Aside from just signaling the presence of life, however, some biosignatures can contain information about the state that a planet's biosphere has achieved.

Whether there is life elsewhere in the universe is a question people have pondered for millennia; and within the last few decades, great strides have been made in our search for signs of life outside of our solar system.