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Mike Massimino engagement report

@Astro_Mike - 1.0M followers on X

Measured over 8 original posts from a 30-day window, last computed on October 25, 2026.

Engagement

Per follower
0.01%
of 1.0M followers
Per impression
1.53%
7.0K views on a typical post
Reach
0.67%
of its followers see a post
Typical post
107
interactions (median)
Saved
0.036%
2 bookmarks on a typical post
Posting rate
0.3/day
active 27% of days
Peak time
14:00 UTC
Monday

A typical post picks up 107 interactions against 1.0M followers, an engagement rate of 0.01%. Posts are seen about 7.0K times each, and 1.53% of those impressions turn into an interaction. That is about 0.672% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.3 posts a day over the last 30 days, though only 27% of days saw any activity at all. Most posts go out around 14:00 UTC, and Monday is the busiest day of the week. Of the 8 posts sampled, 100% carry an image or video and 13% link out. The account's strongest tracked post pulled 4.5K interactions, about 42x its own typical post.

Measured over 8 original posts from a 30-day window, last computed on October 25, 2026.

Where this sits in the catalog

At 0.01%, Mike Massimino sits above the 10th percentile of the 204,424 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.024%.

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 14:00 UTC, and Monday 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: 14:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 111%Busiest hour: 14:00 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: Monday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 111%Busiest day: Monday
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 link13% of posts-41%-42% to -40%32K
Typical length-no effect-2% to -1%42K
  • 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.
  • 13% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts.
  • Its average post runs 252 characters, which falls in the 180 - 280 characters band. Across the catalog, posts of 180 to 280 characters match the same accounts' other posts almost exactly.

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

  • May 12, 200942x their median

    From orbit: Launch was awesome!! I am feeling great, working hard, & enjoying the magnificent views, the adventure of a lifetime has begun!

    3.6K61697191View on X
  • May 26, 20268.9x their median

    I am amazed by the sheer size of The Great Wall of China - stretching over 13,000 miles (21,196 km) and built across more than 2,000 years. I am grateful I had the opportunity to visit and experience a small section of it. https://t.co/KDCEu7TKpQ

    8633354386K viewsView on X
  • Apr 5, 20268.8x their median

    Happy Easter to all those celebrating, both on and off the planet https://t.co/tjnAUY5HUD

    875616515K viewsView on X
  • May 24, 20265.2x their median

    Today I visited one of the most amazing places I have ever seen on the planet - the Terracotta Warriors in Xi’an, China - a UNESCO World Heritage site housing thousands of life-size unique clay soldiers created in 246–210 BCE https://t.co/Z0pJAkeN3h

    4923331036K viewsView on X
  • Feb 1, 20269.3x their median

    #OTD 23 years ago, we experienced the unimaginable - the loss of Space Shuttle Columbia and its crew of 7 astronaut colleagues and friends. I still miss them terribly, not a day goes by that do not think about them. Was an honor to know each of them - a great group of heroes we should all try to emulate.

    4255422210K viewsView on X
  • Sep 10, 20264.5x their median

    Earth is beautiful when viewed from space, but just as beautiful up close. My first trip to Wyoming, it is awe-inspiring. https://t.co/zTiSCC2Nx7

    4501419112K viewsView on X
  • Apr 7, 20263.1x their median

    One of the most amazing photographs I have ever seen, GO ARTEMIS 2 !! https://t.co/CzQ1H7h5GR

    30027816.0K viewsView on X
  • Oct 7, 20262.9x their median

    Enjoying the sights of Rome - the Colosseum, the Trevi Fountain, the Roman Forum - amazing history and beauty, I am sublime. https://t.co/blIAJjJbfA

    294512027K viewsView on X
  • Mar 22, 20262.7x their median

    For real inspiration and hope you must see “Spacewoman” - a documentary about the amazing life of my friend and colleague Eileen Collins - the first woman to pilot the Space Shuttle and the first to command a Space Shuttle mission, she is a true American hero. I enjoyed catching up with Eileen and watching the movie this weekend. It is truly out of this world! @ECollinsSpace

    24733847.5K viewsView on X
  • Jun 15, 20262.5x their median

    BREAKING: @JeffBezos is coming to VivaTech. Founder of @Amazon & @BlueOrigin, and Founder & Co-CEO of Prometheus, is taking over our Theater stage on June 17, with @davill , CEO of Blue Origin, moderated by former NASA astronaut @Astro_Mike. Don't miss it! https://t.co/JWy29nK0vS

    2203567971K 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 107 interactions against 1.0M followers, an engagement rate of 0.01%. Posts are seen about 7.0K times each, and 1.53% of those impressions turn into an interaction. That is about 0.672% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.3 posts a day over the last 30 days, though only 27% of days saw any activity at all. Most posts go out around 14:00 UTC, and Monday is the busiest day of the week. Of the 8 posts sampled, 100% carry an image or video and 13% link out. The account's strongest tracked post pulled 4.5K interactions, about 42x its own typical post.

What is Mike Massimino's engagement rate on X?
Mike Massimino (@Astro_Mike) has an engagement rate of 0.01%, based on the median interactions across 8 original posts from the last 30 days against 1,040,093 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.01%, Mike Massimino sits above the 10th 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_Mike have real engagement?
There is not yet enough sample to rank this account against others of its size.
When does @Astro_Mike post?
Most posts go out around 14:00 UTC, and Monday is its busiest day, at roughly 0.3 posts per day across the measured window.

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