Dr. Alexandre Santerne 🌍✓ Add us as a preferred source on Google
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🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
3.4K
Account age
1 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Dr. Alexandre Santerne 🌍
Known for
502 views
This is an amazing app that allows you to see (almost) live all the #satellites and #debris (in LEO*) that are in #orbit above our heads.
You can pick one #satellite and get many info, including its orbit.
yeah, it's completely crowded, but we keep launching more and more #rockets 🚀 and much more satellites, like if our ressources were unlimited.
https://leolabs.space/
*LEO: low-Earth orbit (~30
451 views
This week, I had the opportunity to stay 2 nights at the Pic du Midi #Observatory, in the french Pyrénées. I captured some #timelapse from this site, which is still magical.
I was astonished by the dynamism of this observatory: new domes, new #instruments, new projects and new buildings. #Research in #astronomy in the metropolitan #France is performing like a charm.
I fully support its application
22 views
Proud to announce that our #home is no longer using #fossilfuels, at all, in our direct uses (#heating, hot water, and #transportation).
#climate #climatechange #stopfossilfuels #energy
16 views
Si vous cherchez un #cadeau de #Noël original à moins de 5€ pour offrir, je vous conseille cet essai d’Olivier Hamant (chercheur INRAE) “Antidote au culte de la #performance - la robustesse du #vivant” (éditions Gallimard).
La crise #environnementale amène des fluctuations importantes dans nos #sociétés, que nous observons déjà. Certain•es pensent que la réponse à ces fluctuations est d’être plus
📊 Post engagement
Recent posts · likes + reposts
Nov 17latest
90
Avg engagement / post
10–22
Typical post (engagement)
2.7%
Engagement vs followers
14/100
Spiky reach
Jun 2025
On Mastodon since
Half of recent posts land between 10 and 22 likes + reposts (median 12) — reach is spiky, driven by the occasional post that pops.
🔥 Top post: This is an amazing app that allows you to see (almost) live all · 502 likes + reposts
📊 Activity & format
Posting cadence
0.34 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly images
Recent: 3 text · 8 image · 1 video.
Follower / following
11×
Follows 294 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Mastodon ↗
🔥 Top post
This is an amazing app that allows you to see (almost) live all the #satellites and #debris (in LEO*) that are in #orbit above our heads.
You can pick one #satellite and get many info, including its orbit.
yeah, it's completely crowded, but we keep launching more and more #rock…
RE: https://fediscience.org/@rahmstorf/116975010646320342
We know that if we want to commit a large population to a deep societal transformation, we need to promote a desirable #future and avoid anxiety.
Hell ! That's so hard !
#Climate #C…
#Transition #ESR
J'avais proposé l'idée il y a plus de 2 ans, la graine a été plantée aujourd'hui.
Sur le sujet de la transition #environnementale de la #recherche, le constat est que les critères d'évaluation de la recherche représenten…
Proud to announce that our #home is no longer using #fossilfuels, at all, in our direct uses (#heating, hot water, and #transportation).
#climate #climatechange #stopfossilfuels #energy
▶
This week, I had the opportunity to stay 2 nights at the Pic du Midi #Observatory, in the french Pyrénées. I captured some #timelapse from this site, which is still magical.
I was astonished by the dynamism of this observatory: new domes, …
Je n'ai pas été très présent, ni actif ici ces dernières semaines, et ça risque de continuer. J'ai toutefois une excellente raison : je suis maintenant conseiller municipal à @villedegieres.
Non, ce n'est pas certainement pas le début pou…
L'observatoire des #sciences de l'#univers de #Grenoble (OSUG) a lancé une série de courtes #vidéos pour sensibiliser, avec un #humour un peu décalé, sur le changement #climatique. C'est excellentissime !
A voir absolument, la dernière not…
I wish you that the worst of #2026 is like the best of 2025 …
#happynewyear #newyear
I watched #Avatar3 a few days ago. (no Spoiler - true also for #Avatar 1 & 2). This movie surprised me for several reasons.
1️⃣ The hidden take-home message is extremely clear. How such a #movie watched by hundreds millions people can no…
📷 For #Christmas, even trees are wearing their most beautiful earrings
#photography #blackandwhite #winter #snow
See on my #flickr gallery: https://www.flickr.com/photos/santerne/55003720547/
#noel à #Chamrousse 🤩
#Photographie #landscape
Si vous cherchez un #cadeau de #Noël original à moins de 5€ pour offrir, je vous conseille cet essai d’Olivier Hamant (chercheur INRAE) “Antidote au culte de la #performance - la robustesse du #vivant” (éditions Gallimard).
La crise #envi…
#Transition #ESR
J'avais proposé l'idée il y a plus de 2 ans, la graine a été plantée aujourd'hui.
Sur le sujet de la transition #environnementale de la #recherche, le constat est que les critères d'évaluation de la recherche représenten…
Proud to announce that our #home is no longer using #fossilfuels, at all, in our direct uses (#heating, hot water, and #transportation).
#climate #climatechange #stopfossilfuels #energy
▶
This week, I had the opportunity to stay 2 nights at the Pic du Midi #Observatory, in the french Pyrénées. I captured some #timelapse from this site, which is still magical.
I was astonished by the dynamism of this observatory: new domes, …
Je n'ai pas été très présent, ni actif ici ces dernières semaines, et ça risque de continuer. J'ai toutefois une excellente raison : je suis maintenant conseiller municipal à @villedegieres.
Non, ce n'est pas certainement pas le début pou…
L'observatoire des #sciences de l'#univers de #Grenoble (OSUG) a lancé une série de courtes #vidéos pour sensibiliser, avec un #humour un peu décalé, sur le changement #climatique. C'est excellentissime !
A voir absolument, la dernière not…
I wish you that the worst of #2026 is like the best of 2025 …
#happynewyear #newyear
I watched #Avatar3 a few days ago. (no Spoiler - true also for #Avatar 1 & 2). This movie surprised me for several reasons.
1️⃣ The hidden take-home message is extremely clear. How such a #movie watched by hundreds millions people can no…
📷 For #Christmas, even trees are wearing their most beautiful earrings
#photography #blackandwhite #winter #snow
See on my #flickr gallery: https://www.flickr.com/photos/santerne/55003720547/
#noel à #Chamrousse 🤩
#Photographie #landscape
Si vous cherchez un #cadeau de #Noël original à moins de 5€ pour offrir, je vous conseille cet essai d’Olivier Hamant (chercheur INRAE) “Antidote au culte de la #performance - la robustesse du #vivant” (éditions Gallimard).
La crise #envi…
🐘 Community & instance
Home server
fediscience.org
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Jun 2025
An established account with real history on the platform.
💡 Facts
🗓️Joined Mastodon in 2025 — 1 year ago.
👁️Averages 90 views per post.
📤Posts about 0.3× per week.
📍Based in France.
🕵️ Fake follower check
Estimated76/100
Good
Credibility score
92%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 92% real, active audience · Low fake-follower risk.
- Engagement (~2.7% of followers engage each post) is around typical for Mastodon.
- Organic base — far more followers than accounts it follows.
- Verified account.
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
💚 Brand affinity
EstimatedBrands Dr. Alexandre Santerne 🌍's audience is most likely to respond to — from detected sponsorships in this niche.
About
#Astronomer, working @IPAG & teaching at #University Grenoble-Alpes (France)
Expert in finding #NoPlanetB
Want to work in a #fair, #inclusive, and #sustainable #research #environment. Member of #labos1point5
Toot a lot about #ClimateChange and #Climate. Boycott planes, travel by #train only.
Interests: #photography #Astronomy #Space
#fedi22
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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Frequently asked questions
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How many followers does Dr. Alexandre Santerne 🌍 have?
Dr. Alexandre Santerne 🌍 has 3,361 followers on Mastodon.
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