Johanna Hartke
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jhartke.bsky.social
Johanna Hartke
@jhartke.bsky.social
310 followers 270 following 150 posts
Astronomer. Collegium Researcher at the Finnish Centre for Astronomy with ESO, University of Turku, FI. Working on galaxy halos, intra-cluster light and planetary nebulae as kinematic tracers and all things IFU. She/her.
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Reposted by Johanna Hartke
kattascha.bsky.social
Ich kann diese Postings von wegen „spätestens wenn Männer Töchter haben“ oder „ihrer Frau zuliebe“ zum Thema (sexualisierte) Gewalt gegen Frauen & Mädchen echt nicht mehr lesen. Basic Menschenrechte sollten unabhängig vom individuellen Familien- & Beziehungsstatus gelten & durchgesetzt werden.
February 10, 2026 at 11:45 AM
Reposted by Johanna Hartke
eso.org
AES Andes announced that it will step back from the project INNA, planned near our Paranal Observatory.
We welcome this and expect the project to be withdrawn from Chile's Environmental Assessment Service soon, which would formally confirm the cancelation: https://www.eso.org/public/news/eso2602
🔭 🧪
The Milky Way stretches across the night sky above a dark mountain ridge. An astronomical observatory is silhouetted on the summit.
February 2, 2026 at 3:04 PM
Reposted by Johanna Hartke
sebwilken.net
So viel Sonne 😌

#Turku #Finnland
Fluss mit Eis Schatten auf Ziegelsteinwand Laterne an Holzhaus Bunte Fassade
January 30, 2026 at 5:34 PM
jhartke.bsky.social
Me this week with new data 🤩
January 29, 2026 at 8:52 AM
Reposted by Johanna Hartke
eso.org
Dive into this ultra-detailed image of the Sculptor Galaxy!

Based on observations made with our VLT, it was created by stitching together over 100 exposures, covering an area about 65 000 light-years wide.

Read more: https://www.eso.org/public/images/eso2510b/

🔭 #flashback

📷 ESO/E. Congiu et al.
An image of a spiral galaxy, showing only the light from specific gasses within, looking like much of the galaxy has been replaced with empty space and only an outline remains. This outline is composed of specks of different coloured light, with a cone of white-ish light at the centre. Nearby the dots are a warm orange, replaced with pink light as you get to the edges of the grand spiral.
January 27, 2026 at 8:03 AM
Reposted by Johanna Hartke
tomgauld.bsky.social
A recent cartoon for @theguardian.com
title: The Writer in January Panel 1. “A short stroll...” says the writer aleaving the house. The sun has begun to peek over the horizon. Panel 2. “Then back to my desk for a good day's writing in the winter sun.” The sun has risen a little higher. Panel 3. “Surely it's not going down yet?” The sun is indeed on its way down. Panel 4. “Perhaps I'll catch the last rays.” Says the writer breaking into a sprint. Panel 5. The writer is back at home sitting at a desk saying “Damn!”. The sun is gone. The sky is gloomy.
January 26, 2026 at 11:53 AM
Reposted by Johanna Hartke
maxplanck.de
Female scientists have to wait longer for their articles to be reviewed than their male colleagues. An analysis of 36.5 million papers in the life sciences shows that for females it took 115 days to reach a decision, compared to 101 days for men journals.plos.org/plosbiology/... @plosbiology.org
Median time under review (time intervened from submission to acceptance) of articles indexed in PubMed with a female first author (n = 2,562,262), a male first author (n = 3,405,821), a female corresponding author (n = 975,010), a male corresponding author (n = 1,946,469), a female first author and a female corresponding author (n = 757,878), a male first author and a male corresponding author (n = 1,357,835), all-female authors (n = 650,280), and all-male authors (n = 2,146,799)
January 22, 2026 at 8:43 AM
Reposted by Johanna Hartke
gso-forresearchers.bsky.social
📣 Apply now for the GSO Leadership Academy 10 and secure one of 25 fully funded fellowships.

📅 Application Deadline: March 1, 2026 (CET)

🔗 More Information: gsonet.org/foerderprogr...
January 12, 2026 at 9:09 AM
Reposted by Johanna Hartke
mbkplus.bsky.social
Speaking as a scientist who studies the cosmos but who’s never been that interested in doing it with telescopes, it’s both humbling and awe-inspiring to get out and truly see the full night sky with your own two eyes in an area without light pollution. We’re losing something that’s invaluable.
mtsw.bsky.social mtsw @mtsw.bsky.social · Dec 27
I think people today don't understand just how dramatically the night sky has changed - it looked like it does in super remote areas *everywhere* before the invention of electric lighting, and light pollution that obscures the sky has gotten dramatically worse in the last 25 years.
goldwagnathan.bsky.social Nathan Goldwag @goldwagnathan.bsky.social · Dec 27
If you ever have the experience of seeing a night sky out in the deep countryside you can understand this; it really is a fundamentally different experience, and I can't imagine it not being formative to people.
December 27, 2025 at 4:58 PM
Reposted by Johanna Hartke
bibianaprinoth.ch
The application for the ESO Summer Research Programme 2026 has just opened!

It‘s a six week programme in Garching close to Munich where pre-Ph.D students can work on a hands-on project.

Working at @eso.org is a fabulous experience, so please help me spread the word ✨

🔗 eso.org/sci/meetings...
ESO - SummerResearch2026
ESO is the European Organisation for Astronomical Research in the Southern Hemisphere. It operates the La Silla Paranal Observatory in Chile and has its headquarters in Garching, near Munich, Germany.
eso.org
December 17, 2025 at 1:12 PM
Reposted by Johanna Hartke
utu.fi
The European Southern Observatory’s (ESO) new instrument in Chile can quickly detect fleeting cosmic events.

The SOXS spectrograph opens exciting new opportunities for Finnish astronomy.

www.utu.fi/en/news/news...
New SOXS instrument ready to observe fleeting cosmic events
The European Southern Observatory’s (ESO) new instrument in Chile can quickly detect fleeting cosmic events. The SOXS spectrograph opens exciting new opportunities for Finnish astronomy.
www.utu.fi
December 17, 2025 at 7:52 AM
Reposted by Johanna Hartke
amreibahr.bsky.social
Liste von Dingen, die ich an der Wissenschaft nicht vermissen werde (wird fortlaufend ergänzt). #IchBinHanna

1. Nie Feierabend haben.
December 13, 2025 at 9:36 PM
jhartke.bsky.social
I have recently been invited to write a mini review on planetary nebulae as tracers of accreted stellar populations, which has now been published in Frontiers in Astronomy and Space Sciences. 🔭👩‍🔬
November 21, 2025 at 11:20 AM
Reposted by Johanna Hartke
ricardalang.bsky.social
Vielleicht haben „die Töchter“ auch keinen Bock mehr darauf, dass ihre Rechte und ihre Sicherheit für Friedrich Merz immer genau dann von Bedeutung sind, wenn er sie nutzen kann, um seine vollkommen rückwärtsgewandte Politik zu rechtfertigen?
October 20, 2025 at 11:58 AM
Reposted by Johanna Hartke
skyglowberlin.fediscience.org.ap.brid.gy
I'm offering a funded PhD position on nighttime lights #RemoteSensing in the Institute of #geography at the @ruhr-uni-bochum.de https://jobs.ruhr-uni-bochum.de/jobposting/62065e5be70a916f65edd647cd1b1740b04cd72e0

I'd love for the ad to be seen by as many potential candidates as possible, so […]
Original post on fediscience.org
fediscience.org
October 21, 2025 at 9:23 AM
Reposted by Johanna Hartke
galacticrave.bsky.social
Sunset: Paranal eclipsing Armazones with the ELT #astrophotography
October 20, 2025 at 9:04 AM
Reposted by Johanna Hartke
jhartke.bsky.social
The Finnish Centre for Astronomy with ESO (FINCA) is inviting applications for the FINCA postdoctoral fellowship:
aas.org/jobregister/... 🔭
FINCA Postdoctoral Researcher Positions | American Astronomical Society
The Finnish Centre for Astronomy with ESO (FINCA) is a national research institute in Finland, with its headquarters within the University of Turku (UTU) campus.  Turku is a historic city in the South...
aas.org
October 15, 2025 at 7:35 AM
Reposted by Johanna Hartke
aaronsojourner.org
"Humans aren’t very efficient movers—until you put us on a bicycle, when we become some of the most energy-efficient land travelers in the animal kingdom."
www.scientificamerican.com/article/a-hu...
October 14, 2025 at 11:22 PM
Reposted by Johanna Hartke
tomgauld.bsky.social
My cartoon for this week’s @newscientist.com
A comic strip in six panels. The panels inerlock like a jigsaw with knobs and sockets. Two stick figures walk right to left through all the panels. Panel 1: Person 1 says "I hear you're working on a new theory." Panel 2 & 3: Person 2 says: "Yes, I'm calling it the jigsaw model. I think it could change our whole View of reality." Panel 4: Person 1 says "When Will you publish?: Panel 5: Person 2 says "But a couple of things are still bothering me." (this piece/panel is a bit squint) Panel 6: This piece is rotated ninety degees and fits to the others very badly. Person 2 is saying "Soon. I feel like I'm really close" A second look at the whole comic shows that the last two panels read in the wrong order because the jigsaw has been put together incorrectly.
October 12, 2025 at 9:25 AM
Reposted by Johanna Hartke
amreibahr.bsky.social
„Dauerstellen sind notwendig, aber nicht hinreichend für echte Gleichstellung“, so @mariehuber.bsky.social in dieser eindrücklichen Replik auf uns, die reich an Bsp. ist, was bzgl. Gleichstellung in der Wissenschaft nach wie vor schiefläuft — & Vorschläge macht, wie es besser geht. 🙏 #IchBinHanna
October 15, 2025 at 6:00 AM
jhartke.bsky.social
The Finnish Centre for Astronomy with ESO (FINCA) is inviting applications for the FINCA postdoctoral fellowship:
aas.org/jobregister/... 🔭
FINCA Postdoctoral Researcher Positions | American Astronomical Society
The Finnish Centre for Astronomy with ESO (FINCA) is a national research institute in Finland, with its headquarters within the University of Turku (UTU) campus.  Turku is a historic city in the South...
aas.org
October 15, 2025 at 7:35 AM
Reposted by Johanna Hartke
soziopolis.bsky.social
Aus gegebenem Anlass: Unser neues Dossier thematisiert Geschlechterungleichheiten im Wissenschaftssystem – von den historischen Wurzeln der Differenzkategorien über die politische Semantik der Exzellenz bis hin zu alltäglichen Mechanismen.

www.soziopolis.de/dossier/wiss...
Zu sehen ist das Titelbild des Dossiers mit der Überschrift "Wissenschaftlerinnen. Zur Situation von Frauen in Academia". Abgebildet ist eine weibliche Person am Schreibtisch, vor ihr ein Laptop, diverse wissenschaftliche Bücher, über die die Person gebeugt auf dem Tisch liegt, die Hand noch an der Kaffeetasse, scheinbar sehr erschöpft. Um sie herum liegen zahlreiche Utensilien auf dem Tisch verteilt: Kinderbücher und Spielbausteine, eine volle Einkaufstasche mit Lebensmitteln, Produkte zur Pflege von Angehörigen usw. Im Hintergrund steht ein volles Bücherregal mit wissenschaftlicher Literatur.
October 14, 2025 at 7:41 AM
Reposted by Johanna Hartke
eve9445.bsky.social
Ein Beitrag von @drkeichhorn.bsky.social und @amreibahr.bsky.social zu Frauen i.d. Wissenschaft, aus dem ich alles zitieren könnte, weil es so treffend ist. Bitte den ganzen Artikel lesen! - und ja zum Fazit: Die beste Frauenförderung sind faire Arbeitsbedingungen
www.soziopolis.de/ziel-erkannt...
Ziel erkannt, Ziel verfehlt?
Warum wir allen Gleichstellungsmaßnahmen zur Förderung von Frauen in der Wissenschaft zum Trotz auf der Stelle treten
www.soziopolis.de
October 14, 2025 at 10:25 AM
Reposted by Johanna Hartke
eurostarjustin.bsky.social
Got distracted while getting ready for work. The combination of a fox and autumn colours in our garden was irresistible. Started with my phone but then had to grab my proper camera.
#autumn
October 13, 2025 at 11:02 AM
Reposted by Johanna Hartke
clemm.bsky.social
Ich bin ja gegen Sprachverbote und für geschlechtergerechte Sprache und gesundes Essen.
October 9, 2025 at 5:13 AM