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Alexander Gerst engagement report

@Astro_Alex - 1.0M followers on X

Measured over 1 original post from a 30-day window, last computed on October 25, 2026.

Engagement

Per follower
0.026%
of 1.0M followers
Per impression
2.18%
12K views on a typical post
Reach
1.17%
of its followers see a post
Typical post
268
interactions (median)
Saved
0.049%
6 bookmarks on a typical post
Posting rate
0.03/day
active 3% of days
Peak time
17:00 UTC
Thursday

Early reading. We have captured 1 original post for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.

A typical post picks up 268 interactions against 1.0M followers, an engagement rate of 0.026%. Posts are seen about 12K times each, and 2.18% of those impressions turn into an interaction. That is about 1.17% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.03 posts a day over the last 30 days, though only 3% of days saw any activity at all. Most posts go out around 17:00 UTC, and Thursday is the busiest day of the week. Of the 1 posts sampled, 100% carry an image or video and 100% link out. The account's strongest tracked post pulled 26K interactions, about 96x its own typical post. Only 1 original post have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.

Measured over 1 original post from a 30-day window, last computed on October 25, 2026.

Where this sits in the catalog

At 0.026%, Alexander Gerst sits above the 25th percentile of the 204,424 accounts in this comparison. That places it in the below the median band, which runs 0.024% to 0.143%.

p100.004%
p250.024%
p50 (median)0.143%
p750.677%
p902.55%
p9982.4%
Engagement rate as a share of followers, across the 204,424 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 22,888 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.004%
25th percentile0.024%
50th percentile0.143%
75th percentile0.677%
90th percentile2.55%
99th percentile82.4%

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 17:00 UTC, and Thursday 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.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 17:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 111%Busiest hour: 17:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
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 UTC0%116K
22:00 UTC-2%100K
23:00 UTC-1%90K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Thursday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 111%Busiest day: Thursday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%393K
Monday+1%483K
Tuesday-2%520K
Wednesday-3%472K
Thursday-2%430K
Friday-3%447K
Saturday+2%393K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

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.

This account's posting mix compared with catalog-wide effects
FormatThis accountCatalog effect95% intervalAccounts behind it
Image or video100% of posts+111%+108% to +115%34K
Outbound link100% of posts-41%-42% to -40%32K
Typical length-+15%+14% to +16%32K
  • 100% 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.
  • 100% 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 1134 characters, which falls in the over 280 characters band. Across the catalog, posts over 280 characters run 15% above 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

  • Apr 4, 202596x their median

    Splashdown of Dragon and the @framonauts confirmed – welcome back to Earth @satofishi, @astro_jannicke, @rprogge, and @Icetrek! https://t.co/nkWzqenf9Q

    22K3.1K9762392.3M viewsView on X
  • Feb 6, 202548x their median

    Currently editing tonight's shot... and WOW. This is probably my new favorite ISS transit shot... beating out the one I captured with the silhouette over Tycho crater. Here's that photo for reference: https://t.co/dbqbUt44w4

    11K1.1K36582449K viewsView on X
  • Apr 1, 202639x their median

    Godspeed my friends. I don’t have words to describe this feeling. Say hi to the Moon, and see you in 10 days. https://t.co/e96klRTk3m

    9.5K9207735135K viewsView on X
  • Jan 14, 20253.0x their median

    Ein riesen-Tröööööt zum 50. Geburtstag, lieber #Elefant!🐘🎉 Deine Abenteuerlust und dein großes Elefantenherz inspirieren uns alle. Als #Maustronaut hast du mit mir gemeinsam bereits die Internationale Weltraumstation erkundet – und wer weiß, vielleicht heben wir bald wieder ab. Dein Raumanzug wartet in jedem Fall auf dich! https://t.co/5tnTIU2C4I

    2.1K200291144K viewsView on X
  • Apr 1, 20268.6x their median

    „Wir begannen als Wanderer, und wir sind immer noch Wanderer.“ Heute beginnt die zweite Welle der Erforschung des Weltraums. Vier von uns brechen auf, um weiter zu reisen als je ein Mensch zuvor, um zu sehen, was noch kein Mensch je gesehen hat. Und mit der Kraft dieser Welle werden wir dauerhaft als Forschende auf dem Mond bleiben – so wie wir es in der Antarktis getan haben. Europa und Deutschland sind Teil dieses Abenteuers – das erfüllt mich mit Freude. Gute Reise, Reid, Christina, Victor und Jeremy! Ich kann es kaum erwarten, den Donner eures Aufbruchs zu spüren – und freue mich noch mehr auf eure Rückkehr in 10 Tagen, zu dieser wunderschönen blauen Murmel, mit einer Geschichte, die uns alle berühren wird. @NASAArtemis @esaspaceflight

    1.8K387731558K viewsView on X
  • Oct 10, 20257.7x their median

    Unbeschreibliches Gefühl, einen Helikopter mit den eigenen Händen auf der Zugspitze im Schnee zu landen. 🚁🏔️ Hätte ich nicht für möglich gehalten, dass ich sowas in nur drei Wochen Training lernen kann. Krasses Kompliment an die Instruktoren der Bundeswehr Heeresflieger! 👏🏼 Landemanöver in engen Schluchten, auf schmalen Felsplateaus und im tiefen Schnee helfen uns, die nötige Präzision fürs vertikale Landen zu trainieren – eine Fähigkeit, die für @AstroSamantha, @astro_matthias , @Thom_astro, @astro_luca und mich bei möglichen künftigen Missionen zum Mond entscheidend sein wird. Denn die Mondlandefähren, die derzeit entwickelt werden, sind ebenfalls dafür ausgelegt, vertikal zu starten und zu landen. 🌕

    1.9K11766890K viewsView on X
  • Apr 20, 20266.4x their median

    Rollout has begun at #NASAMichoud, and several members of our NASA workforce are watching the move on this beautiful morning. This core stage will serve as the backbone of the SLS rocket for the Artemis III mission. Learn more at: https://t.co/wsbiHtVo9i https://t.co/HD7vq2tJ7k

    1.5K1844723674K viewsView on X
  • Apr 1, 20265.5x their median

    Arrived on site with @astro_matthias. 6 hours to go https://t.co/JEBifbodx9

    1.4K5032326K viewsView on X
  • Apr 20, 20254.6x their median

    Wenn ihr schonmal eine Sandburg gebaut habt, kennt ihr das sicher: Überall Sand – in den Schuhen, in der Kleidung, auf der Haut. Nervig! Aber stellt euch mal vor, der Sand wäre noch viel feiner, schärfer und hartnäckiger – und ihr könntet ihn nicht einfach mit Wasser abspülen. Genau so ist es auf dem Mond! 🌕 Damit wir besser verstehen, wie man mit diesem Mondstaub umgehen kann, wurde in Köln die Mondforschungshalle LUNA gebaut. Dort wird der Mond nachgebaut – mit speziellem Sand aus einem Steinbruch ganz in der Nähe. Ich war für euch vor Ort und habe mir angeschaut, wie das alles funktioniert und was man dort für zukünftige Mondmissionen lernt. 👨‍🚀✨ Neugierig? Dann schaut mal rein! – am Montag, 21.04. um 9:25 Uhr bei der Sendung mit der Maus oder zum Nachschauen in der ARD-Mediathek https://t.co/A67IVJ2wTR @WDR

    1.1K123271442K viewsView on X
  • Feb 17, 20253.5x their median

    Die Maus als Entdeckerin hat mich mal wieder auf ein Abenteuer begleitet – diesmal fast bis zum Südpol auf der Suche nach Meteoriten. Extreme Kälte, Stürme, atemberaubende Landschaften und wichtige Forschungsarbeit für das Verständnis der Welt – und das Beste: Es hat sogar etwas mit dem Mond zu tun! Jetzt unser Antarktis-Abenteuer in der ARD-Mediathek miterleben: https://t.co/PwB3ePlehd

    81381201627K viewsView on X

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 268 interactions against 1.0M followers, an engagement rate of 0.026%. Posts are seen about 12K times each, and 2.18% of those impressions turn into an interaction. That is about 1.17% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.03 posts a day over the last 30 days, though only 3% of days saw any activity at all. Most posts go out around 17:00 UTC, and Thursday is the busiest day of the week. Of the 1 posts sampled, 100% carry an image or video and 100% link out. The account's strongest tracked post pulled 26K interactions, about 96x its own typical post. Only 1 original post have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.

What is Alexander Gerst's engagement rate on X?
Alexander Gerst (@Astro_Alex) has an engagement rate of 0.026%, based on the median interactions across 1 original posts from the last 30 days against 1,047,791 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.026%, Alexander Gerst sits above the 25th percentile of the 204,424 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 @Astro_Alex have real engagement?
There is not yet enough sample to rank this account against others of its size.
When does @Astro_Alex post?
Most posts go out around 17:00 UTC, and Thursday is its busiest day, at roughly 0.03 posts per day across the measured window.

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