Lisa Kaltenegger
@KalteneggerLisa
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Astronomy Professor @Cornell, Director Carl Sagan Institute @CSInst, Author #AlienEarthsBook, Search for life in the Cosmos #exoplanets, #astrobiology, #cosmos
Ithaca, NY
Joined October 2017
Curious about ALIEN EARTHS and how to spot life in the cosmos? Get your copy from your favorite bookstore and/or please share this on social. @StMartinsPress @MacmillanAudio . @PenguinUKBooks @Cornell #alienearths
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I love how this shows us that Earth moves!.
This beautiful timelapse with the Milky Way stabilized is a reminder that the Earth is spinning through space. Captured at Crater Lake, Oregon by photographer Eric Brummel (@Brummo).via @wonderofscience.
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4 professors @UniofOxford talking about the search for life in the cosmos. @jaynebirkby @AirborneGrain and Dame Jocelyn Bell Burnell
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Which stars could have spotted Earth since early civilizations bloomed? I am glad you asked. See our new paper in @Nature . With the amazing @jfaherty @CSInst @AMNH @Cornell @CornellCAS.
Can they see us? Astronomers have identified 2,034 nearby star-systems – within 326 light-years – that could see Earth cross in front of our sun, backlighting our pale blue dot and revealing signatures of life. @CSInst @CornellCAS @CornellAstro @Nature
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Curious about ALIEN EARTHS and how to spot life in the cosmos? Find out more: April 16, 2024. I would love your support if you could preorder a copy from your favorite bookstore and/or share this on social. @StMartinsPress @PenguinUKBooks.@Cornell
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Can't stop smiling - so this just happened: 3 starred reviews for #AlienEarths .@StMartinsPress @PenguinUKBooks So excited to share the book with everyone on April 16 2024 .see
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Watch an exoplanet. .
This is Beta Pictoris b—a planet 12 times the mass of Jupiter—sailing around its star in a tilted orbit. Constructed from real data, astrophysicist Jason Wang (@semaphore_P)'s video condenses 17 years of footage, making it the longest time-lapse video of an exoplanet to date.
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Beautiful - blue button Jellies. Our Pale Blue Dot has such an astonishing range of life Txs for sharing @RebeccaRHelm.
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Thank you all so much! for the kind words and encouragement for my book - it has been fun to write (& lot of work). My sabbatical project, when I could steal away a few hours to write every day. So, written in US, Austria, Portugal, UK & Spain.
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I love teaching. Got standing ovation at the end of last astronomy 1101 class today from my 200 students :). ok they also were leaving after, so let's say half students got up to clap & half clapped while leaving ;) so kind & inspiring of them @Cornell @CornellCAS #teaching.
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We have such AMAZING students here @Cornell. Today I taught my last class for Astro1101, and students stayed after class just to tell me how much they enjoyed the class. Thank you so much!!! It means the world to teachers anywhere to hear that! Feeling loved!
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What if we're not alone? #alienearths is Book of the Week on @BBCRadio4 - so exciting!!! That means it is a radio show - episode 1 is tomorrow. Exciting @PenguinUKBooks #aliens #FermiParadox #exoplanets
Are we alone in the Cosmos? Listen in to episode 1 of @KalteneggerLisa's #AlienEarths, which is @BBCRadio4's #BookOfTheWeek starting tomorrow. And warm up for it with her on #StartTheWeek first!. What if we're not alone?.#aliens #FermiParadox #exoplanets.
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My Final exam for astronomy 1101 was at 9am on Sunday. A little pick me up for the students getting up so early to take it :) @Cornell @CornellCAS @CornellAstro
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I never had a press embargoed poster - it is actually quite exciting. I am only allowed to hang it up at 10am or I'll be breaking the embargo :) Feeling a bit like James Bond with a secret poster tube? :) Check back at 10am EDT today for great @NASA_TESS news. #TESSCon.
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About 1000 stars in our Solar neighborhood - within just 326 lightyears - can see the Earth transit the Sun. Wondering if anyone has spotted us already. @CSinst with @PepperJoshua @CornellCAS.
“If observers were out there searching, they would be able to see signs of a biosphere in the atmosphere of our Pale Blue Dot,” says prof @KalteneggerLisa, @CornellAstro: her new research asks which stars can see Earth as a transiting #planet. @CSInst .
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A new super-Earth on the edge - SPECULOOS-2c or LP 890-9c. The hot super-Earth LP 890-9b was discovered by the amazing @NASA_TESS. SPECULOOS follow-up revealed an even more intriguing world: SPECULOOS-2c. What's it like at the edge? paper lead @LaetitiaDelrez #SPECULOOS
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Happy Birthday to an amazing scientist and communicator - #CarlSagan would have been 87 years old today. I wish I could talk to him about the amazing new planets we are discovering. Sitting in his old office we overlap in space but unfortunately not in time. @CSInst.
“Books are key to understanding the world and participating in a democratic society.”. Carl Sagan, born on this day in 1934, on reading as an essential instrument of citizenship
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My office to write today ;). hello Portugal, hello sunshine
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@NASA_TESS found its first potentially habitable planet - close by around GJ 357, only 31 lightyears away. Discovery paper and our paper on habitability on astroph tonight- now here https: //cornell.box.com/v/superearthGJ357D @Cornell @CSInst image credit CSI/J.Madden
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Scones, science and science fiction. Brainstorming finding life in the cosmos with the inspiring @CharlesCockell in Edinburgh
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"We are all made of starstuff" Sagan. We share one world, one Cosmos. Everyone matters and should have the same opportunities #BlackLifesMatters.
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It was amazing to talk to @alanalda - his curiosity and insights are just a joy to be part of! Curious about life in the universe and our chances to find it? Join us on #ClearAndVivid to find out next week @CSInst @Cornell @CornellCAS.
Next week on #ClearAndVivid, @alanalda has an amazing discussion with @Cornell astronomy professor and director of @CSInst, @KalteneggerLisa, about searching for life in the universe. Listen Tuesday, January 21st, on your favorite podcast destinations. 🔭 🌌 🎙️
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My office today :) working in small cafes all over Portugal for the first part of my sabbatical-summer travel. Life is good :) #amorlusitano
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Still super excited about this :).
Asteroid 7734 Kaltenegger is named after our #SciencePersona of the day. The largest known asteroid is Ceres, with a diameter of almost 1000 km. Picture credit: NASA.
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The Eclipse in Burlington, VT, was amazing. Sunny and warm, pretty unbelievable for beginning of April @uvmvermont #Eclipse2024 photo credit: Joshua Definbaugh, @uvmvermont
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The #goldenrecord beautifully described in #COSMOS by Ann Druyan and the power of music and it's connection to the Cosmos explored by @CSInst fellow Andrew Hicks @Cornell. #COSMOSCSI @NatGeo. Insightful and inspiring.
"We had no idea who would ever hear this recording or what it would mean to them, but we knew it was a sacred undertaking. Nothing we had built would ever travel so far and last so long." Cosmos: Possible Worlds by Ann Druyan @NatGeo @Cornell #COSMOSCSI #COSMOS 1/
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beautiful Enceladus.
Saturn's moon Enceladus spraying icy vapor into space from its south pole. Image captured by Cassini on May 2, 2012.
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Ever wondered if we could find life in the cosmos? It turns out there was a time in Earth's history when that would have been easier than now - when the dinosaurs roamed. see Oxygen bounty for Earth-like exoplanets: spectra of Earth through the Phanerozoic
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Cool fact: "Ringshine" would light up the twilight hours on Saturn if you were floating in your spacecraft in its atmosphere - pretty cool vision. Ringshine should be a new English word - Did you enjoy the Ringshine too? excellent dinner conversation. Tks for sharing @JPMajor.
This view, made from images acquired by NASA's Cassini spacecraft on February 17, 2007 #OTD shows the effect of "ringshine" on Saturn's night side. Twilight and pre-dawn on Saturn would be pretty bright, thanks to its reflective rings. 🪐
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To all exoplaneteers - Need a spectra catalog of bodies in our own Solar System to compare any exoplanets? Someone said such a catalog does not exist, but I am happy to say it does :) @CSInst, @Astrobiology_jn , amazing art & work by @Astro_Madden
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To the amazing medical heroes on the front lines and their families. Thank you from the bottom of our hearts for your tireless fight for all of us!.
France will thank medical heroes fighting on the frontline against coronavirus everyday at 8pm. Tonight was the first evening. Filmed from Paris’ s 13th arrondissement Chinese quarter.
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How a young colorful Earth can provide the template to find surface life on exoplanets - Expanding the Timeline for Earth’s Photosynthetic Red Edge Biosignature via @IOPscience @CSInst
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8am: Already walked the little one to school, went to work, went to Cafe, got a scone for second breakfast, went to office, made coffee for the whole floor, where I am completely alone.This getting up early to get her to school will need some getting used to. But there's coffee
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Hello London: Talking about #alienearths and our fascinating cosmos @BBCRadio4 today. So exciting.#StartOfTheWeek @PenguinUKBooks @StMartinsPress
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I get to talk about the amazing worlds in our Solar System today. Seed ideas of how to explore them with tiny chipsats. And I get to use the amazing UV Venus data to make the point to consider different wavelength for exploration @CSInst @Breakthrough @JAXA_en #Akatsuki
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In beautiful memory to the inspiring #CarlSagan - his Lost lecture @Cornell is an example of the insightful and creative, honest scientist he was - timeless. @CSInst.
25 years ago today, at the young age of 62 #CarlSagan left this planet. Let's celebrate his life w/the "Lost lecture" @Cornell that was recorded just 2 years before he passed away. You can find the lecture at the @CSInst youtube channel. Carl, we miss you!.
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View from my office today :) hello Leiden - great to be back! looking forward to visit @UniLeiden @AstroYamila @mattkenworthy @sarahkendrew @IgnasSnellen & co
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Don't sleep in tomorrow - you'll get to know an exciting new planet tomorrow 9am CEST. No, we have not found life (yet), but you will want to know about this new world. @CSInst @LaetitiaDelrez.
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To a great 2021. Full of hope and discoveries and moments together again.
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The story about the Lost lecture in Cornelliana, @Cornell alumni magazine: Star Turn: Rediscovered on Betacam, a ‘lost’ lecture by Carl Sagan still resonates @CSInst @CornellCAS.
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Always fun and super interesting to talk with @david_kipping. Thank you for a great conversation about life in the cosmos. #AlienEarths is out today
#CoolWorlds Podcast #12 with @KalteneggerLisa - Alien Earths, Astrobiology Controversies, Frequency of Life. Watch on YT ( or wherever you get your podcasts.
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Ever wondered if there are ALIEN EARTHS? I am so excited to share about one of my projects that I've kept secret for a while. My new book coming out next year on 4/16/24 called ALIEN EARTHS! @StMartinsPress @PenguinUKBooks @Cornell @CornellCAS.
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What would Earth look like in our telescope if we orbited another star? See Sarah & my new paper - Spectra of Earth like planets through geological evolution - to use to find them for real! @CSInst @SarahRugheimer #exoplanets (image:MIT,R.Ramirez)
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Lots of fun and planets found today @NASA_TESS Hackaton @CSInst (fueled by coffee and pizza). @CSInst deputy director @NikoleKLewis ead teams of students in finding new planets in the TESS data.TESS Hackatons take place every first Friday of the month. Join us
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Decorated my undergraduate room - and yes I hung up all the pictures myself after hours. We got amazing undergraduate, so I decided they should feel comfy & inspired in their office too @CSInst @Cornell @CornellAstro
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Meet a new world on the edge: SPECULOOS-2c, a new super-Earth on the edge. On the edge of the Habitable Zone. On the edge between Earth and Venus. Is it a hot, Earth or a Young Venus? Time & JWST will tell its fascinating story. lead by @LaetitiaDelrez
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Toda 11:00 - New discovery to be announced. stay tuned.
The #astronomy Twitterverse on Monday after the #Venus announcement: "we love this Universe". #astronomy Twitter tomorrow (Wednesday) after the 11 am (EST) announcement of a new discovery by #CarlSagan institute scientists @CSInst @Cornell :
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'The announcement we've found alien life could be just a couple of years away' - love the photo and interview! On route to London! @PenguinBooks @StMartinsPress @Cornell.
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Reading and writing in a cafe again today - thinking in the Sun about new worlds #sabbatical #Salzburg
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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 @StMartinsPress @PenguinUKBooks
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Sabbatical part 2: come visit me in my cool new office on the 4th floor physics department @istecnico. Excited to live in this beautiful city for a bit.
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Excited and honored to be awarded the Lise-Meitner-Lecture of the German Physics Society and the Austrian Physics Society for 2024. TALK 1 (German): 19 Sep 2024, Braunschweig, Germany.TALK 2 (English): 23 Sep 2024, Linz, Austria.#lisemeitnerlecture
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New Zealand - are you ready? I'll get to share our Search for Life in the Cosmos with people all over NZ as the 2024 Beatrice Tinsley Lecturer of the NZ Royal Astronomical Society. So NZ, get ready. (March 22-April 6: 12 talks)
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Wow - a cleaned up image of the pale blue dot! Will frame this in my office.
For the 30th anniversary (tomorrow Feb 14) of one of the most iconic views from the @NASAVoyager mission, @NASAJPL published a new version of the image known as the "Pale Blue Dot." . Learn more: #PaleBlueDot #IAU100 #Astronomy
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An exoplanet mystery? A Planet on the Edge. A hot Earth or a young Venus? Can the spectra tell its story? paper in review and there is even more to come later. @CSInst with Rebecca Payne, Zifan Lin, Jim Kasting, and @LaetitiaDelrez.
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Anonymous Feedback for my Introduction to Astronomy Class - ASTRO1101 From Black Holes to New Worlds @CornellCAS - "Truly refreshing and like a fresh cup of coffee for my curiosity", "thought-provoking", "intriguing and inspiring", "eye-opening". I love teaching @Cornell.
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Carl Sagan Institute Exoplanet Travel poster anyone? This amazing poster was done with our new work on a new way to look for life in the cosmos - high UV environments could induce biofluorescence, leaving a telltale glow of life on other worlds @CSInst #MNRS @Cornell @CornellCAS
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Talking to @bbcworldservice about the @NASA_TESS stars we can find planets like Earth around. The search is on @Cornell @CSInst
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Go go go @ESA_CHEOPS. Successful blast off today. To many amazing discoveries for exoplanets and more. @esa @CSInst.
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ALERT: How can we spot life in the cosmos? Could SciFi Planets be real? Where are we the aliens? Find out more in #AlienEarths. Would love your support if you could share this on social media. @StMartinsPress @MacmillanAudio @MacmillanUSA @Cornell @CSInst
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Exciting!!! The first @NASA_TESS planet candidates will be released next Wednesday, September 5th, to a group of approved beta-testers. You get to work on the data 4 months before the official release. Go here to request approval:
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Want to find your own planets? Here is how to become a discoverer of new worlds in the cosmos @NASA_TESS @planethunters.
Curious about coding? Subscribe to our YouTube channel to up your citizen science game - new tutorials every Tuesday! ☕️
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Two astronomers performering @glastonbury? The monkey has questions - @themonkeycage @chrislintott @BBCRadio4
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I think my chocolate cupcakes are asking me deep questions. Or maybe they are just curious about our pale blue dot?
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Want a poster of our amazing little mission that could? @NASA_TESS!!! more than 4000 candidates and counting. And 50+ planets too :) Download the poster below @NASAJPL @NASA @NASAExoplanets.
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LOOK!!!! Two beautiful gorgeous books arrived! Can't wait to share them (April 16 2024 - pre-order at UK: .But Where are YOU going to read #AlienEarths???? .@StMartinsPress @penguinrandom
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Purple is the new Green! Paper Day! Lead by @lpfcoelho, this research expands the Search For Life in the cosmos to a wide range of Planets where purple just could be the new green. via @YouTube @Cornell @CornellCALS #alienearths #Astrobiology @CSInst.
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Hello SF!!! excited to get to talk with incoming @Cornell students and their parents tonight at Palo Alto.
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How different the spin rates (and day length on planets and dwarf planets are. Why? Good question! Thanks for making this graph @physicsJ.
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Which stars have the cosmic vantage point to have seen Earth as a transiting planet since civilization bloomed about 5,000 years ago? We found about 70% of all exoplanets through transits so far. So with just the same technology we have now - who could have spotted us?.
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So weird to be back in my office for the #aas plenary talk today. Have not been here in 10 weeks. All alone. Let's see how Zoom handles more than 1000 astronomers. Will be fun to field questions. :) Excited.
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For those of you in the midst of deciding where to apply for graduate school, consider @CornellAstro. Lots of exciting research options spanning astrophysics, astronomy, planetary sciences& @CSInst. We no longer require the general or physics GRE #GRExit.
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The Secrets of Planets on the Edge: Our new papers out today Speculoos-2c & how @NASAWebb could tell differences of hot Earth, steaming planet, or desolate Venus in a few transits - exciting (with amazing team) @CornellCAS
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Hello Oxford - starting my visit of sunny @UniofOxford with high dinner with the amazing @jaynebirkby. Looking forward to lots more exciting science the next days.
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ONLINE today: Secret Science Club online event at 8pm today. but pssst. it's a "secret". Science about alien Earths ;)
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The amazing @elsisrad is visiting @CSInst and @CornellAstro today. First stop discussing science, @NASA_TESS and life with students & postdocs @CSInst. Colloquium at 4pm today in space science 105 in the exoplanetes & @NASA_TESS. 3:30 for cookies.
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First snowman of the year :) is official winter has arrived in Ithaca
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Selfie with old and new friends @CosmoCaixa in Barcelona today after my talk here. Oh and one very very old fossile friends as well. @CosmoCaixa_CAT Lleida. #JoanOró @FundacioJoanOro
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SPECULOOS-2c: a mystery world at the edge between Earth and Venus. Paper online today on astroph and @AandA_journal. But there is more to come. @CSInst @Cornell. For now, let's celebrate the discovery of a fascinating SuperEarth on the edge.
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Uranus - beautiful and shiny @NASAWebb.
Uranus has never looked better. Really. Only Voyager 2 and Keck (with adaptive optics) have imaged the planet's faintest rings before, and never as clearly as Webb’s first glimpse at this ice giant, which also highlights bright atmospheric features.
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One reason why I love working with a paper planner. Space to put sticky notes from my little one
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Want to know more about Titan? And the cool quadcopter @NASA #dragonfly will fly on this cold cold moon? See details below.
Join us March 24 at 1pm ET to chat with @JHUAPL's Zibi Turtle about Saturn’s mammoth moon Titan and the #Dragonfly mission that will study the prebiotic chemistry occurring on its surface. Use #AskAstrobio for questions! . Set a reminder to join ➡️
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Students from Puerto Rico (free semester at Cornell): @Cornell offers a free semester of study – including tuition, room and board – in spring 2018 for up to 58 students from @UPRUniversidad, deadline Dec1. Come study and work at @CSInst.
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Excited to give the #kavli lecture today #aas236 - let's talk the amazing diversity of works out there and how to find life in the universe.
We sit down with Dr. Lisa Kaltenegger, the 236th AAS Meeting’s Fred Kavli Plenary Lecturer to discuss her quest to find life on other planets using the information we know about our own.
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Who could be watching Earth block light from the Sun? Here is a fun in depth discussion about this and how and why we decided to figure this out: at EventHorizon @jmgeventhorizon with @jfaherty and me :) @CSInst @CornellCAS @AMNH.
What other star systems would be able to watch Earth with our current technology? John discusses the new paper on the Past, present and future stars that can see Earth as a transiting exoplanet with authors @KalteneggerLisa and @jfaherty.
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