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
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%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.004% |
| 25th percentile | 0.024% |
| 50th percentile | 0.143% |
| 75th percentile | 0.677% |
| 90th percentile | 2.55% |
| 99th percentile | 82.4% |
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.
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 | 100% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 13% 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!
- 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
- Apr 5, 20268.8x their median
Happy Easter to all those celebrating, both on and off the planet https://t.co/tjnAUY5HUD
- 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
- 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.
- 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
- Apr 7, 20263.1x their median
One of the most amazing photographs I have ever seen, GO ARTEMIS 2 !! https://t.co/CzQ1H7h5GR
- 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
- 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
- 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
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.