The amazing Diane Ackerman was so incredibly kind to read my book and send me an incredibly generous and kind email. I love her writing... #alienearths get your copy here: bit.ly/AlienEarths

Read about Lisa Kaltenegger’s new book, “Alien Earths,” here: news.cornell.edu/stories/2024/0…

What a fun conversation about the cosmos, alien Earths and everything with Christopher Wofford eCornell Listen in here #alienearths get your copy here: bit.ly/AlienEarths

Jupiter from the James Webb Space Telescope

I love this example; I teach this in my class and then ask students what other ideas they can come up with to figure this out. It's always a fun discussion. Cornell University

Happy 34th launchiversary, Hubble! To date, the telescope has taken over 1.6 million observations of 53,000 astronomical objects, including this brand-new snapshot of the Little Dumbbell Nebula.

What did Hubble see on your birthday? go.nasa.gov/HubbleBirthday

When you think about it, we're all space travelers. Our wonderful #PaleBlueDot is effectively a generational spaceship, speeding through the Milky Way! #EarthDay #EarthDay 2024 #EarthDay EveryDay

This poster visualizes over 800 known exoplanets believed to be rocky or terrestrial, arranged by the amount of heat they receive, comparing their relative sizes and providing a window to how they might look like. see: Halcyon Maps halcyonmaps.com/terrestrial-ex… #astrobiology #exoplanet

Earth.

Our home. Seen from space.

#EarthDay2024 #PaleBlueDot

#Voyager1 is back in contact!!! Celebration!!! NASA JPL

Did you know you can have photosynthesis in the dark?Our latest paper '𝐏𝐮𝐫𝐩𝐥𝐞 𝐢𝐬 𝐭𝐡𝐞 𝐧𝐞𝐰 𝐆𝐫𝐞𝐞𝐧: biopigments and spectra of Earth-like purple worlds' has just been published in MNRAS. This paper is a tale of biodiversity in the cosmos 🧵academic.oup.com/mnras/article/…

🌍 With over 5500 exoplanets discovered, the hunt for life beyond Earth is entering a new phase. But we need to expand our search beyond just green landscapes. Our paper shows a diverse set of purple bacteria and their biopigments that use heat for photosynthesis

🔍 By studying purple bacteria, we're exploring how their unique biopigments could shape the spectra of Earth-like exoplanets. These bacteria, including purple sulfur and purple non-sulfur bacteria, could dominate a wide range of environments on other worlds

🎨 From oceans to snowball planets, our research sheds light on how purple bacteria could color the surface of exoplanets in many shades, and how we could observe them through the atmosphere and cloud coverage. Would they still be visible? spoiler alert: likely yes!

🛰️ Our paper provides a comprehensive database of reflectance spectra for a variety of purple bacteria, empowering astronomers to optimize search strategies for life with upcoming ground-based telescopes like the ELT's and future space-based telescopes as the HWO.

Lisa Kaltenegger Carl Sagan Institute Cornell University And we also have a cool video from the amazing Cornell UniversityNews youtube.com/watch?v=tA6lm-…

Dr Trinity Hamilton Taylor Price Marine Biological Laboratory (MBL) Fulbright Portugal Fulbright Belgium | Luxembourg | Schuman Find it also on arxiv: arxiv.org/abs/2404.10105

A shoutout to Dr Trinity Hamilton and Taylor Price as well as to the Microbial diversity course of 2023 Marine Biological Laboratory (MBL) for the amazing collaboration in this research

'Purple may be the new Green' video by Lígia Fonseca Coelho 🇵🇹🇺🇲 about our recent paper published at MNRAS🦠📷Lisa Kaltenegger Dr Trinity Hamilton Taylor Price Carl Sagan Institute Cornell University #alienearths

This incredible planet is also a ginormous spacecraft, covered by a dazzlingly effective life-support system, the biosphere, a complex of balanced networks that keep us and so many other species alive.
Lisa Kaltenegger, Alien Earths
#alienearths St. Martin's Press Penguin Books UK