Sciences et Avenir engagement report
@Sciences_Avenir - 327K followers on X
Measured over 64 original posts from a 30-day window, last computed on September 16, 2026.
Engagement
A typical post picks up 11 interactions against 327K followers, an engagement rate of 0.003%. Measured over 64 original posts, its engagement rate beats 14% of 15,519 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 3.1K times each, and 0.359% of those impressions turn into an interaction. That is about 0.937% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.2 posts a day over the last 30 days, with activity on roughly 50% of days. Most posts go out around 09:00 UTC, and Tuesday is the busiest day of the week. Of the 64 posts sampled, 77% carry an image or video and 86% link out. The account's strongest tracked post pulled 306 interactions, about 28x its own typical post.
Measured over 64 original posts from a 30-day window, last computed on September 16, 2026.
Compared with accounts its own size
Sciences et Avenir's engagement rate beats 14% of the tracked X accounts closest to it in follower count (15,519 accounts, accounts of similar size (decile 9 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.
On engagement per impression rather than per follower it beats 22% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.
Where this sits in the catalog
At 0.003%, Sciences et Avenir sits above the 10th percentile of the 157,233 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.022%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.003% |
| 25th percentile | 0.022% |
| 50th percentile | 0.128% |
| 75th percentile | 0.604% |
| 90th percentile | 2.32% |
| 99th percentile | 83.4% |
This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built
Posting timing
This account posts most often around 09:00 UTC, and Tuesday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 77% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 86% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | -3% | -3% to -2% | 54K |
- 77% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 86% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
- Its average post runs 139 characters, which falls in the 80 - 180 characters band. Across the catalog, posts of 80 to 180 characters run 3% below the same accounts' other posts.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Sep 9, 202628x their median
Tesla teste son FSD en France : aucun obstacle majeur identifié pour l'adapter à l'Europe https://t.co/8rpDBmv3aC
- Sep 7, 202614x their median
đČ Il y a 56 millions dâannĂ©es, la Terre sâest rĂ©chauffĂ©e brutalement. Des palĂ©ontologues ont reconstituĂ© cette transformation dans les forĂȘts⊠et trouvĂ© un parallĂšle inquiĂ©tant avec notre Ă©poque. https://t.co/zXfgdHqw7j
- Aug 31, 20264.5x their median
L'Ă©pidĂ©mie d'Ebola en RDC "progresse de façon exponentielle", alerte l'ONU đ https://t.co/38RQTUthbm https://t.co/U1oaCSZQUy
- Aug 31, 20263.5x their median
L'Ă©pidĂ©mie d'Ebola en RDC "progresse de façon exponentielle", alerte l'ONU đ https://t.co/YZ9Ra8JxeN https://t.co/FaYAarw2R3
- Sep 2, 20263.4x their median
đŹ Des chercheurs australiens ont observĂ© pour la seconde fois des dauphins en train de chasser Ă l'aide de coquillage. Cette observation, d'une femelle et de son delphineau, remet en question les logiques de transmission chez grands dauphins de l'ocĂ©an Indien. https://t.co/TQqWS5gJz5
- Aug 31, 20263.3x their median
La France est le plus mauvais Ă©lĂšve de lâOCDE dans le domaine des inĂ©galitĂ©s scolaires "qui reflĂštent les inĂ©galitĂ©s sociales" Une Ă©quipe du CNRS cherche comment lutter contre celles-ci đ https://t.co/c3gNPa3gzP https://t.co/6NLGZxrgXd
- Sep 2, 20262.8x their median
1,5°C : lâONU appelle Ă regarder la rĂ©alitĂ© en face đ https://t.co/y3Q4fkxrUf https://t.co/v0wxi2bpu8
- Sep 2, 20262.7x their median
1,5°C : lâONU appelle Ă regarder la rĂ©alitĂ© en face đ https://t.co/vZ7yINAbSj https://t.co/8kUUZhiCde
- Aug 30, 20262.7x their median
Le sens du rythme nâest pas propre aux humains. MĂȘme avec un tout petit cerveau, on peut en ĂȘtre dotĂ© ! Comme ces chenilles qui utilisent des signaux acoustiques et rythmiques complexes pour communiquer avec des fourmis. đ https://t.co/h3SLIcVqCT https://t.co/wmAxm8Ee9r
- Aug 31, 20262.5x their median
Collant, extensible, rigide ou glissant : la bave dâescargot sait presque tout faire. Et derriĂšre cette Ă©trange substance se cache un matĂ©riau biologique particuliĂšrement sophistiquĂ©. © Andrew Dunn https://t.co/BmsoGTbnLN
Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.
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Reading these numbers
A typical post picks up 11 interactions against 327K followers, an engagement rate of 0.003%. Measured over 64 original posts, its engagement rate beats 14% of 15,519 tracked accounts of a similar size. That is a reason to look at how the audience behaves - reply depth, saves, whether the followers are recent - rather than a conclusion about it on its own. Posts are seen about 3.1K times each, and 0.359% of those impressions turn into an interaction. That is about 0.937% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.2 posts a day over the last 30 days, with activity on roughly 50% of days. Most posts go out around 09:00 UTC, and Tuesday is the busiest day of the week. Of the 64 posts sampled, 77% carry an image or video and 86% link out. The account's strongest tracked post pulled 306 interactions, about 28x its own typical post.
- What is Sciences et Avenir's engagement rate on X?
- Sciences et Avenir (@Sciences_Avenir) has an engagement rate of 0.003%, based on the median interactions across 64 original posts from the last 30 days against 327,380 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.003%, Sciences et Avenir sits above the 10th percentile of the 157,233 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
- Does @Sciences_Avenir have real engagement?
- Its engagement rate beats 14% of the tracked X accounts closest to it in follower count (15,519 accounts), which puts it in the bottom quarter for its size group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
- When does @Sciences_Avenir post?
- Most posts go out around 09:00 UTC, and Tuesday is its busiest day, at roughly 2.2 posts per day across the measured window.