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Reposted by Linn Boldt-Christmas

Yvette Cendes @whereisyvette.bsky.social · 12h

Are you interested in working on astronomical transients/ radio astronomy, all while exploring the beautiful Pacific Northwest on your weekends? I'm hiring a postdoc! Come work for me!

aas.org/jobregister/...

Please get in touch if you have any questions!

🔭🧪🎢

Postdoctoral Positions in Time-Domain Astronomy | American Astronomical Society

The department of Physics and Astronomy at the University of Oregon invites applications for a postdoctoral scholar to work with Prof. Yvette Cendes in the field of time-domain astrophysics. This inc...

aas.org

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Emily Hunt @emily.space · 1d

Today's reading begins with Lise Meitner, who co-discovered nuclear fission (she wrote the paper!) and was in general an INCREDIBLE trailblazing scientist.

Except, as a Jew, she had to flee Nazi Germany to Sweden and lost her professorship in Berlin. The men she worked with got the prize instead 🧪🔭

Lise Meitner - Wikipedia

en.wikipedia.org

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David Grinspoon @drfunkyspoon.bsky.social · 1d

A sorry record. This is one reason I don’t care for the Nobel prizes. Three others being:

1) promotes a “great man” view of scientific progress, whereas science is best understood and celebrated as a collective, community activity.
🧪

Graph showing the low and declining percentage of physics Nobel prizes awarded to women. 2.18% as of 2025, despite the fact that 15% of physics phds have been awarded to women over the last 50 years.

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Karen Masters @karenlmasters.bsky.social · 1d

There is still some hopeful news out there! Of course we need coal to go down... not just stay flat (but flat is better than rising...).

Dave Jones @cleanpowerdave.bsky.social · 2d

NEW: GLOBAL RENEWABLES OVERTAKES COAL

How the heck did that happen so quickly?!...🧵

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ESA Space Transport @transport.esa.int · 1d

Sweden is not only an @esa.int founding member and a host of the Esrange Space Centre in Kiruna, but also an important contributor of Ariane 6.

GKN Aerospace, based in Sweden, provides turbines and nozzle extensions for Ariane 6's rocket engines.

www.esa.int/Enabling_Sup...

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Nicole "They call me Spooky. Spooky Mulder" Gugliucci @noisyastronomer.com · 3d

Just covered this in class the other day! We were using the discovery of 51 Pegasi b to explore the Doppler effect a la "Learning Astronomy by Doing Astronomy" lecture tutorials. 🎢 #AstroEdu

Had a MOMENT when I realized it's been 30 years... PHEW!

Linn Boldt-Christmas @nplinnspace.bsky.social · 3d

🔭🧪🪐Fabulous article in BBC today marking the 30th anniversary of 51 Peg b, discussing also the hunt for Earth-like #exoplanets with the Terra Hunting Experiment @terrahunting.bsky.social — can’t believe we’re so close to starting this incredible survey (later this year)!

www.bbc.com/future/artic...

The epic hunt for a planet just like Earth

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining life.

www.bbc.com

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Linn Boldt-Christmas @nplinnspace.bsky.social · 3d

🔭🧪🪐Fabulous article in BBC today marking the 30th anniversary of 51 Peg b, discussing also the hunt for Earth-like #exoplanets with the Terra Hunting Experiment @terrahunting.bsky.social — can’t believe we’re so close to starting this incredible survey (later this year)!

www.bbc.com/future/artic...

The epic hunt for a planet just like Earth

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining life.

www.bbc.com

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Paul Byrne @theplanetaryguy.bsky.social · 6d

Almost exactly 30 years ago, the first extrasolar planet was identified orbiting a main-sequence star.

Now, not only can we directly image planets orbiting other stars, but we can see planets *being born*

Imagine what the next 30 years will bring.

A bright ring surrounds a star, with three smaller, dimmer blobs inboard of the outer ring. At least two of those dimmer blobs are exoplanets.

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David Kipping @davidkipping.bsky.social · 5d

Here’s my new paper which our last #CoolWorlds video discussed. Paper tackles two existential puzzles: why don’t we live around the most common star type, an M-dwarf, and, why do we live so early in cosmic chronology?

arxiv.org/abs/2510.01215

Solar Hegemony: M-Dwarfs Are Unlikely to Host Observers Such as Ourselves

With no firm evidence for life beyond our solar system, inferences about the population observers such as ourselves rests upon the Earth as a single input, at least for now. Whilst the narrative of ou...

arxiv.org

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Linn Boldt-Christmas @nplinnspace.bsky.social · 6d

Join us in ~1 hour if you’re interested in sub-Neptune #exoplanet atmospheres! I will be moderating the Q&A session 😊🔭🧪

Rocky Worlds Meetings @rockyworlds.bsky.social · 7d

📢 Don't forget to join us for this talk tomorrow (Thursday)!

13:00 UTC = 15:00 CEST = 09:00 EDT = 06:00 PDT = 22:00 JST

If you haven't signed up to our mailing list to access the Zoom-link, you can also watch it live on our YouTube channel 🔭☄️🧪 #exoplanet livestream: www.youtube.com/watch?v=nMr2...

Rocky Worlds Meetings @rockyworlds.bsky.social · 14d

Cloudy with a chance of... haze? Aerosol? Carbon dioxide?!🌦️

Next #RockyWorldsDiscussion on Thu 2 Oct @ 13:00 UTC will feature Kazumasa Ohno (NAOJ) and recent JWST results that lift the hazy veil on the composition of sub-Neptune #exoplanet GJ 1214 b 🪐🔭🧪

More: www.rockyworlds.org/event-detail...

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Michael Busch @michael-w-busch.bsky.social · 8d

Today on the arXiv:

Hutsemékers et al. 2025, "Extreme NiI/FeI abundance ratio in the coma of the interstellar comet 3I/ATLAS" arxiv.org/abs/2509.26053

3I is putting out more iron vapor as it comes in closer to the Sun.

Matching the carbonyl boil-off model, with extreme sensitivity to temperature.

Extreme NiI/FeI abundance ratio in the coma of the interstellar comet 3I/ATLAS

Emission lines of FeI and NiI are commonly found in the coma of solar system comets, even at large heliocentric distances. These atoms are most likely released from the surface of the comet's nucleus ...

arxiv.org

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Kelly Lepo @kellylepo.bsky.social · 7d

We have found many rocky planets orbiting cool, red dwarf stars. But do these planets have atmospheres?

The Rocky Worlds Director’s Discretionary Time program has 500 hours of JWST time plus 250 HST orbits to help answer that question. 🔭🧪

science.nasa.gov/mission/webb...

Illustration showing a distant star, with two rocky planets in the foreground. The star is deep orange and appears to be very active, with dark and light spots and large flares. The planets appear to be the same distance from the star. The planet on the left is significantly smaller than the one on the right. Text beside the planet at left reads, “Smaller planet. Weaker gravity. Lower escape velocity. Atmosphere less likely.” Text for the planet at right reads, “Larger planet. Stronger gravity. Higher escape velocity. Atmosphere more likely.” The small planet at left is gray. The right quarter of the hemisphere is lit by the star. The boundary between the lit and dark sides is sharp. The larger planet at right is blueish white with swirling clouds. The left quarter is lit by the star. The boundary between the lit and dark sides is fuzzy.

Illustration showing two star-planet systems, with stars in the background and planets in the foreground. The planets are the same size, but the stars are different colors and distances. The system on the left side of the graphic shows a star that is deep orange and appears to be very active, with dark and light spots and large flares. It appears to be close to the planet. The planet is gray and looks airless. The left quarter of the hemisphere is lit by the star, with a sharp boundary between the lit and dark sides. Text below the planet reads, “More high-energy light from the star. Atmosphere less likely.” The system on the right side of the graphic shows a star that is yellower and appears to be less active and farther away from the planet. The planet is blueish white with swirling clouds. The left quarter is lit by the star. The boundary between the lit and dark sides is fuzzy. Text below the planet reads, “Less high-energy light from the star. Atmosphere more likely.”

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Linn Boldt-Christmas @nplinnspace.bsky.social · 7d

RIP to the incredible Jane Goodall. I learned about her (a woman scientist! They exist?!) as a precocious child attempting to learn English by reading The Far Side. She wrote the foreword to one collection after she was featured, to her delight, in a comic. The story: screenrant.com/far-side-con...

”The Far Side” comic from 1987 by Gary Larson. Two chimpanzees are in a tree, and one (seemingly female) is picking hair off another (seemingly male). She says: ”Well, well — another blond hair… conducing a little more ’research’ with that Jane Goodall tramp?”

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Caroline Morley @astrocaroline.bsky.social · 7d

UT Austin Astro is hiring! It's an open call, but definitely interested in getting another exoplanet person! Feel free to reach out with any questions about the department or living in Austin! aas.org/jobregister/...

Tenure-Track Assistant Professor Position in Astronomy | American Astronomical Society

The Department of Astronomy at the University of Texas at Austin invites applications for a tenure-track faculty position at the Assistant Professor level to begin in August 2026. We welcome applicati...

aas.org

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Linn Boldt-Christmas @nplinnspace.bsky.social · 7d

…can I try out for the holiday name competition in December instead please? 😔🎄

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Rocky Worlds Meetings @rockyworlds.bsky.social · 7d

📢 Don't forget to join us for this talk tomorrow (Thursday)!

13:00 UTC = 15:00 CEST = 09:00 EDT = 06:00 PDT = 22:00 JST

If you haven't signed up to our mailing list to access the Zoom-link, you can also watch it live on our YouTube channel 🔭☄️🧪 #exoplanet livestream: www.youtube.com/watch?v=nMr2...

Rocky Worlds Meetings @rockyworlds.bsky.social · 14d

Cloudy with a chance of... haze? Aerosol? Carbon dioxide?!🌦️

Next #RockyWorldsDiscussion on Thu 2 Oct @ 13:00 UTC will feature Kazumasa Ohno (NAOJ) and recent JWST results that lift the hazy veil on the composition of sub-Neptune #exoplanet GJ 1214 b 🪐🔭🧪

More: www.rockyworlds.org/event-detail...

An image of the speaker, Kazumasa Ohno. He is smiling and looking into the camera. He is wearing a navy blue cable-knit jumper with a checkered shirt, and glasses. He is against a background of what appears to be other people as the photo is seemingly cropped from a group photo.

$Artistic illustration of sub-Neptune TOI-421 b. A hypothetical exoplanet with similar banding to Jupiter, but in blue colours, is shown in the foreground. In the distant, the planet's host star is shown, which is a warm golden colour and shows diffraction spikes. Image credit: SciTechDaily.com$

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CosmicRami 🏳️‍🌈🏳️‍⚧️ @cosmicrami.com · 8d

Personal milestone ✅

So proud to share this article / research, which has been accepted for publication in @pasajournal.bsky.social

This is several years of my PhD work so far, so here's a little thread about it.

The BIG question: Are millisecond #pulsar profiles stable?

Strap in!

1/n

🔭🧪📡

SpaceAustralia.com @spaceaustralia.com · 8d

"Millisecond pulsars, whilst remarkably stable, may not be the perfect timekeepers we once thought they were"

New research by @cosmicrami.com outlines how a pulsar throwing a tantrum could impact precision timing experiments.

www.spaceaustralia.com/feature/puls...

#SpaceAustralia

📸 NASA SVS

🔭🧪

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Shashank Dholakia @astroshashank.bsky.social · 7d

New paper by me and @benjaminpope.bsky.social! How well can we map a star using optical interferometry?

This is just a submitted preprint at the moment--comments and questions welcome! (1/N)

arxiv.org/abs/2509.25433

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Joe Callingham @astrojoe.bsky.social · 7d

Are you looking to do a PhD in astronomy? Are you interested in radio stars and exoplanets? Then you should apply to do a PhD at @api.uva.nl with me! You can find more about the exciting project below. Applications are due 3rd of November!

api.uva.nl/vacancies/ph...

PhD research topics - Anton Pannekoek Institute for Astronomy

PhD research topics

api.uva.nl

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Linn Boldt-Christmas @nplinnspace.bsky.social · 8d

Every single one of my (Swedish) grandfather’s 10 billion books have been annotated in the margins in pencil because he would underline all new English words he didn’t know & wrote the definitions down. I adore reading his old copies because it’s like learning beside him, in real time, 50 years ago!

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Dr. Victoria Grinberg @vicgrinberg.mastodon.social.ap.brid.gy · 8d

When an interstellar object passes close by, all eyes are on it!

#esa is making its solar system mission look at the #comet 3I/ATLAS: first #exomars TGO and #marsexpress when the comet passes close to Mars and then the #juice, currently on its way to […]

[Original post on mastodon.social]

Infographic showing the path of comet 3I/ATLAS, the third known interstellar object to enter our Solar System. It displays the orbits of Earth, Mars and the Juice spacecraft around the Sun, along with key dates and events as comet 3I/ATLAS travels through the inner Solar System in 2025. Coloured and numbered dots mark important observation points by telescopes and spacecraft.

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Space Telescope Science Institute @stsci.edu · 9d

#NASAWebb has found the first direct evidence of potential moon formation around a giant exoplanet. The discovery is shedding light on how such systems evolve and why moons could be potentially habitable worlds: https://bit.ly/46xGodN 🔭 🧪

An illustration of a young planet with a surrounding disk of dust and gas potentially forming moons. The planet, which appears dark red, is shown at lower right, circled by a cloudy, clumpy reddish orange-colored disk. The host star appears at upper left, and glows yellow, with its own reddish disk of debris. The disk that surrounds the planet takes up about half the illustration. The black background of space is speckled with stars. At the bottom of the illustration, graphics of molecules are listed in the following order: Acetylene, Carbon Dioxide, Ethane, Benzene, Hydrogen cyanide. The words Artist’s Concept appear at upper right.

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Linn Boldt-Christmas @nplinnspace.bsky.social · 11d

Thank you so much!!! 🥹❤️

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Linn Boldt-Christmas @nplinnspace.bsky.social · 11d

Thank you so much! 🥹 x2! According to my family, you do *not* need to pick up on the blueshift/no shift/redshift reference in order to enjoy it — could equally just be some pretty shapes, haha!

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Linn Boldt-Christmas @nplinnspace.bsky.social · 11d

🥹 thank you so much! I think I daresay the defence was… fun?! Is it possible to think so?!?

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