Morgan Fouesneau
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mfouesneau.bsky.social
Morgan Fouesneau
@mfouesneau.bsky.social
76 followers 100 following 6 posts
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Reposted by Morgan Fouesneau
emily.space
Finding out about Gaia at #EAS2025Cork! ☄️

Just announced: Gaia DR4 will be released in December 2026!
A photo of the slide with the December 2026 release date
June 26, 2025 at 2:11 PM
Reposted by Morgan Fouesneau
emily.space
How many open clusters could be hiding at the edge of our galaxy? 🔭☄️🧪 #galactic

Our new paper out today (A&A, accepted) pioneers a new way to test the completeness of cluster catalogues built with @esa.int's Gaia mission!
The fraction of simulated clusters we recover (upper panel) compared against a dust map (lower panel.) Dust is clearly a major hindrance to seeing open clusters with Gaia. The detectability of young clusters (upper panel) and old clusters (lower panel) in the anticentre of our galaxy. Grey points show real clusters. It's clear that there's a huge void where we're not sensitive enough to say if there are more old clusters. The detectability of old clusters, shown a different way. The two most distant catalogued clusters in the anticentre (Saurer 1 & Berkeley 29) appear to simply be lucky detections, as they sit in a small (not so reddened) part of the anticentre. General trends in cluster detectability in the region as a function of various parameters. Mass, age, extinction, and distance are the biggest culprits.
June 24, 2025 at 12:28 PM
Reposted by Morgan Fouesneau
orifox.bsky.social
The 5 year mission plan for @nasaromantelescope.bsky.social summarized in an easy to read press release with some snazzy graphics. Which part are you most excited about? #NASARoman #LongLiveRoman

www.nasa.gov/missions/rom...
NASA’s Roman Mission Shares Detailed Plans to Scour Skies - NASA
NASA’s Nancy Grace Roman Space Telescope team shared Thursday the designs for the three core surveys the mission will conduct after launch. These observation
www.nasa.gov
April 25, 2025 at 11:58 AM
Reposted by Morgan Fouesneau
operations.esa.int
Today we say goodbye to ESA’s Milky Way-mapper Gaia! The Gaia spacecraft has completed its sky-scanning and will be switched off this morning.
Gaia spacecraft in space in front of the Milky Way galaxy
March 27, 2025 at 6:09 AM
Reposted by Morgan Fouesneau
emily.space
Cloudflare have developed a way to trap bots scraping the internet for AI data in a honeypot labyrinth.

Hilariously, they used AI to generate realistic-looking webpages that have many many many links and can trap AI scraping bots in place:
Trapping misbehaving bots in an AI Labyrinth
How Cloudflare uses generative AI to slow down, confuse, and waste the resources of AI Crawlers and other bots that don’t respect “no crawl” directives.
blog.cloudflare.com
March 23, 2025 at 8:50 AM
Reposted by Morgan Fouesneau
giobusso.bsky.social
The disappearance of Gaia
Final goodbye to Gaia from China
YouTube video by ESA Gaia Mission
youtu.be
March 23, 2025 at 3:56 PM
mfouesneau.bsky.social
@bot.astronomy.blue sign up
March 7, 2025 at 8:20 AM
Reposted by Morgan Fouesneau
ericlagadec.bsky.social
Le satellite Gaia vient de faire ses dernières observations hier, après avoir observé 2 milliards d'astres! Cet instrument, dont on ne parle pas assez, est une véritable révolution pour l'astronomie. Ça vous dit d'en savoir plus et de connaître les principaux résultats?
Thread👇
January 16, 2025 at 1:09 PM