Dr. Jessie Christiansen
@aussiastronomer.bsky.social
Caltech/IPAC Planet Hunter | Chief Scientist, NASA Exoplanet Science Institute | @TEDFellow | Science consultant | General Nerd | My views are not the views of NASA | She/her
The cold never* bothered** me anyway.
*always
*felt deeply unpleasant to
*always
*felt deeply unpleasant to
December 6, 2025 at 5:20 AM
The cold never* bothered** me anyway.
*always
*felt deeply unpleasant to
*always
*felt deeply unpleasant to
It’s the St Henri!
December 5, 2025 at 3:02 PM
It’s the St Henri!
Eeeeeeeee!
December 5, 2025 at 5:39 AM
Eeeeeeeee!
Something pretty wild is about to happen. 👀
December 5, 2025 at 2:25 AM
Something pretty wild is about to happen. 👀
Home from Cleveland and taking a sneaky peek at my work email before returning to the office tomorrow.
Oh. Oh no.
(You may have to click to reveal the horror.)
Oh. Oh no.
(You may have to click to reveal the horror.)
December 3, 2025 at 9:07 PM
Home from Cleveland and taking a sneaky peek at my work email before returning to the office tomorrow.
Oh. Oh no.
(You may have to click to reveal the horror.)
Oh. Oh no.
(You may have to click to reveal the horror.)
It’ll be fine, she said. Let’s walk to be bar and we can go past the church where we got married.
November 30, 2025 at 3:55 AM
It’ll be fine, she said. Let’s walk to be bar and we can go past the church where we got married.
Jeff is always watching you.
November 29, 2025 at 3:04 AM
Jeff is always watching you.
His name is Jeff and no, we won’t be taking questions.
November 28, 2025 at 10:26 PM
His name is Jeff and no, we won’t be taking questions.
Done! The ‘Feels Like’ at the start of the race was 12F. 🥶
November 27, 2025 at 3:34 PM
Done! The ‘Feels Like’ at the start of the race was 12F. 🥶
Welcome to Cleveland.
November 27, 2025 at 12:15 AM
Welcome to Cleveland.
Then go to a new tab, type
exoplanet <exoplanet system, e.g. TOI-700>
and WATCH WHAT HAPPENS!! (And enjoy my slow plane wifi.)
(If you search for individual planets often, this is a super-duper time saver over navigating to the front page of the NASA Exoplanet Archive each time!)
(2/2)
exoplanet <exoplanet system, e.g. TOI-700>
and WATCH WHAT HAPPENS!! (And enjoy my slow plane wifi.)
(If you search for individual planets often, this is a super-duper time saver over navigating to the front page of the NASA Exoplanet Archive each time!)
(2/2)
November 26, 2025 at 9:35 PM
Then go to a new tab, type
exoplanet <exoplanet system, e.g. TOI-700>
and WATCH WHAT HAPPENS!! (And enjoy my slow plane wifi.)
(If you search for individual planets often, this is a super-duper time saver over navigating to the front page of the NASA Exoplanet Archive each time!)
(2/2)
exoplanet <exoplanet system, e.g. TOI-700>
and WATCH WHAT HAPPENS!! (And enjoy my slow plane wifi.)
(If you search for individual planets often, this is a super-duper time saver over navigating to the front page of the NASA Exoplanet Archive each time!)
(2/2)
A holiday gift for #exoplanets Chrome users: how to set up the coolest exoplanet shortcut ever.
Click the three-dot menu in the upper right -> Settings -> Search Engine -> Manage search engines and site search.
Scroll to site search and click Add. Fill like this and save:
(1/2)
Click the three-dot menu in the upper right -> Settings -> Search Engine -> Manage search engines and site search.
Scroll to site search and click Add. Fill like this and save:
(1/2)
November 26, 2025 at 9:28 PM
A holiday gift for #exoplanets Chrome users: how to set up the coolest exoplanet shortcut ever.
Click the three-dot menu in the upper right -> Settings -> Search Engine -> Manage search engines and site search.
Scroll to site search and click Add. Fill like this and save:
(1/2)
Click the three-dot menu in the upper right -> Settings -> Search Engine -> Manage search engines and site search.
Scroll to site search and click Add. Fill like this and save:
(1/2)
Surprise highlight after the DGA #WickedForGood screening - Ava DuVernay sat down with Jon M. Chu to chat about how this moment felt after five years of development and even more of dreams.
November 24, 2025 at 4:42 AM
Surprise highlight after the DGA #WickedForGood screening - Ava DuVernay sat down with Jon M. Chu to chat about how this moment felt after five years of development and even more of dreams.
We got creative with the homemade pretzels tonight. If you squint, maybe you can see the dragon.
November 23, 2025 at 4:37 AM
We got creative with the homemade pretzels tonight. If you squint, maybe you can see the dragon.
It's Friday, and apparently bluesky is ready for this fun revelation:
Dinosaurs lived on the other side the Galaxy.
Dinosaurs lived on the other side the Galaxy.
November 21, 2025 at 5:11 PM
It's Friday, and apparently bluesky is ready for this fun revelation:
Dinosaurs lived on the other side the Galaxy.
Dinosaurs lived on the other side the Galaxy.
It's that time of year again.
November 19, 2025 at 6:10 PM
It's that time of year again.
Okay we don’t get a proper fall in Los Angeles but golden hour after a rain is still pretty gorgeous.
November 19, 2025 at 12:35 AM
Okay we don’t get a proper fall in Los Angeles but golden hour after a rain is still pretty gorgeous.
Overleaf not really understanding the itinerant nature of academia.
November 18, 2025 at 9:56 PM
Overleaf not really understanding the itinerant nature of academia.
New airport for me!
November 12, 2025 at 11:58 PM
New airport for me!
Okay no-one's published a planet ephemeris in Lilian Date yet but we've seen A SURPRISING NUMBER OF THE REST OF THESE.
(And this is without counting all the TDB, UTC, TT variants of the above).
(And this is without counting all the TDB, UTC, TT variants of the above).
November 10, 2025 at 10:16 PM
Okay no-one's published a planet ephemeris in Lilian Date yet but we've seen A SURPRISING NUMBER OF THE REST OF THESE.
(And this is without counting all the TDB, UTC, TT variants of the above).
(And this is without counting all the TDB, UTC, TT variants of the above).
My own illogical hypocrisy is keeping me awake: I love the device of paintings inside paintings, and yet I loathe the one where fictional characters declaim ‘But this isn’t a book/TV show/movie! This is real life!’
November 8, 2025 at 5:54 AM
My own illogical hypocrisy is keeping me awake: I love the device of paintings inside paintings, and yet I loathe the one where fictional characters declaim ‘But this isn’t a book/TV show/movie! This is real life!’
Hey you. YES YOU. Super persnickety astronomer. You know who you are.
NASA Exoplanet Archive just updated our overview pages so the stars are closer to their actual colours, as per Harre & Heller (2021) and Cranmer (2021).
You're welcome. 😎
(You can thank @kevinkhu.bsky.social!)
NASA Exoplanet Archive just updated our overview pages so the stars are closer to their actual colours, as per Harre & Heller (2021) and Cranmer (2021).
You're welcome. 😎
(You can thank @kevinkhu.bsky.social!)
November 8, 2025 at 12:25 AM
Hey you. YES YOU. Super persnickety astronomer. You know who you are.
NASA Exoplanet Archive just updated our overview pages so the stars are closer to their actual colours, as per Harre & Heller (2021) and Cranmer (2021).
You're welcome. 😎
(You can thank @kevinkhu.bsky.social!)
NASA Exoplanet Archive just updated our overview pages so the stars are closer to their actual colours, as per Harre & Heller (2021) and Cranmer (2021).
You're welcome. 😎
(You can thank @kevinkhu.bsky.social!)
So can do this, but not feed people. Do I have that right? Maybe I just don't understand what is meant by 'government shutdown'.
November 7, 2025 at 9:51 PM
So can do this, but not feed people. Do I have that right? Maybe I just don't understand what is meant by 'government shutdown'.
Yeah so our skylight just exploded in the middle of the night for no reason? Except obviously the reason is ‘lol it’s 2025’.
November 5, 2025 at 7:54 AM
Yeah so our skylight just exploded in the middle of the night for no reason? Except obviously the reason is ‘lol it’s 2025’.
