Expanding the Search For Life To Purple Planets

In search for alien life, purple may be the new green. On Earth, green signifies life, thanks to chlorophyll-driven photosynthesis. But on exoplanets, Cornell researchers have found that purple could be a key color to look for. Some bacteria on Earth already use infrared light for photosynthesis and contain purple pigments instead. This discovery means that potential alien worlds with dominant purple bacteria might emit a unique "light fingerprint" detectable by advanced telescopes.

Lisa Kaltenegger, Carl Sagan Institute (CSI) director and associate professor of astronomy in the College of Arts and Sciences, and Lígia Fonseca Coelho, a postdoctoral associate at CSI, discuss this research.

[NixonsFarm]

Cornell has had some of the world's greatest astronomers on its faculty -- Professor
Lisa Kaltenegger, Tommy Gold, Frank Drake, and my old professor, Carl Sagan. Go Big Red!❤

[joezo]

Shes definitely been experimenting with some of her samples, and probably found some fungi species us mere mortals have no access too. She looks like shes hippy flipping with psilocybin and mdma. Im digging it. Most times scientists seem so inhibited, and rigid, while she seems like shes explored the depths of time and space spiritually and came out a much better version of herself. Mushrooms are the key - 4 gram trips once every two weeks combined with astral projection, and potentially a benzo to allow you to be more unibhibited, will open your mind.

[holaplaneta]

I'm so excited. Curiosity and facts-based focus are the main reasons we all know a little bit about what's here and somewhere else. I would wish to be still here when the "To be or not to be" question is finally answered. Good job! Keep going, ladies!

[sergiomartins]

Cientista Ligia, valorizo que cientistas como você façam pesquisas que vai para além do nosso mundo e que explorem o nosso universo. Mas se quiser saber mais sobre ETs aconselho-a a assistir as palestras do professor Laércio Fonseca.

[qualmd]

the way she talks is weird fr creeping me out