Astronomy Magazine engagement report
@AstronomyMag - 256K followers on X
Measured over 77 original posts from a 30-day window, last computed on September 25, 2026.
Engagement
A typical post picks up 23 interactions against 256K followers, an engagement rate of 0.009%. Measured over 77 original posts, its engagement rate beats 24% 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 2.5K times each, and 0.92% of those impressions turn into an interaction. That is about 0.978% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.6 posts a day over the last 30 days, with activity on almost every day in the window. Most posts go out around 08:00 UTC, and Tuesday is the busiest day of the week. Of the 77 posts sampled, 47% carry an image or video and 100% link out. The account's strongest tracked post pulled 116 interactions, about 5.0x its own typical post.
Measured over 77 original posts from a 30-day window, last computed on September 25, 2026.
Compared with accounts its own size
Astronomy Magazine's engagement rate beats 24% 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 43% 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 0.009%, Astronomy Magazine sits above the 10th percentile of the 157,890 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 | 0.605% |
| 90th percentile | 2.32% |
| 99th percentile | 83.3% |
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 08:00 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 | 47% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 100% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | no effect | -2% to -1% | 42K |
- 47% 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 205 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
- Aug 27, 20265.0x their median
Sky Today: August 27 Minutes before reaching Full, the Moon is eclipsed this evening in a lovely event visible across the U.S. Image credit: Gene Ellison (Flickr, CC BY-NC-ND 2.0) Read more: https://t.co/Dsf8QhJtJD https://t.co/lIJzkyP3Ti
- Sep 14, 20264.2x their median
The Sky Today on Monday, September 14: Connect four The Moon, Venus, Spica, and Mercury now all stand in a line tonight, but only if you’re quick — Mercury sets soon after the Sun. Image credit: Stellarium/USGS/Celestia/Clementine Read more: https://t.co/601utDJyap https://t.co/VoWrrW5blu
- Sep 13, 20263.4x their median
The Sky Today on Sunday, September 13: Venus, the Moon, and Spica Three celestial objects form a triangle in the evening twilight as Venus and the crescent Moon hang with Virgo’s brightest star. Image credit: Astronomy: Roen Kelly Read more: https://t.co/JleeAU1AZ9 https://t.co/j5IIxes3wQ
- Sep 5, 20263.3x their median
Sky Today: September 5 Saturn's biggest, brightest moon is once again near the ringed planet today and tomorrow as it circles on its 16-day orbit. Image credit: Stellarium/Oleg Pluton Read more: https://t.co/lT9GAYlgU7 https://t.co/TtBcV4sKSS
- Sep 12, 20262.8x their median
The Sky Today on Saturday, September 12: Dione skims Saturn’s pole Dione crosses Saturn’s north pole, projecting its shadow onto the cloud tops as Tethys disappears into the planet’s shadow. Image credit: Astronomy: Roen Kelly Read more: https://t.co/9TSGqJ6xC3 https://t.co/h0BBxz6fKh
- Aug 31, 20262.8x their median
Sky Today: August 31 Bright planet Venus and stellar signpost Spica hang together in Virgo after sunset. They'll remain close for the next few days. Image credit: Stellarium Read more: https://t.co/nH612mtKAZ https://t.co/EZIiOjLiYF
- Sep 16, 20262.8x their median
The Sky Today on Wednesday, September 16: Triangle in the sky Triangulum is a small but easy-to-spot constellation in the evening and morning sky, hosting one of the closest galaxies to our own. Image credit: Astronomy: Roen Kelly Read more: https://t.co/ULBJYBP1OX https://t.co/6prSNgsyZr
- Sep 21, 20262.7x their median
The Sky Today on Monday, September 21: Saturn passes a field star A field star appears to pass through the Saturn system as the planet moves across our sky overnight tonight. Image credit: Alison Klesman (via TheSkyX) Read more: https://t.co/iyg4KQ4TIq https://t.co/lvkIpK3eBE
- Sep 8, 20262.7x their median
Sky Today: September 8 Now in Cancer, our waning Moon hangs close to Jupiter. The gas giant is a great telescopic target, with cloud patterns and moons on display. Image credit: Stellarium/USGS/Celestia/Clementine Read more: https://t.co/pBwdyU9SQC https://t.co/7By0ToOgri
- Sep 17, 20262.5x their median
The Sky Today on Thursday, September 17: The Moon and the Scorpion Our satellite skims past bright red giant star Antares at the heart of Scorpius. Check them out in the south after sunset. Image credit: Stellarium/USGS/Celestia/Clementine Read more: https://t.co/ithjQxHtzx https://t.co/oRTo1T8nvJ
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 23 interactions against 256K followers, an engagement rate of 0.009%. Measured over 77 original posts, its engagement rate beats 24% 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 2.5K times each, and 0.92% of those impressions turn into an interaction. That is about 0.978% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.6 posts a day over the last 30 days, with activity on almost every day in the window. Most posts go out around 08:00 UTC, and Tuesday is the busiest day of the week. Of the 77 posts sampled, 47% carry an image or video and 100% link out. The account's strongest tracked post pulled 116 interactions, about 5.0x its own typical post.
- What is Astronomy Magazine's engagement rate on X?
- Astronomy Magazine (@AstronomyMag) has an engagement rate of 0.009%, based on the median interactions across 77 original posts from the last 30 days against 255,569 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.009%, Astronomy Magazine sits above the 10th percentile of the 157,890 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 @AstronomyMag have real engagement?
- Its engagement rate beats 24% 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 @AstronomyMag post?
- Most posts go out around 08:00 UTC, and Tuesday is its busiest day, at roughly 2.57 posts per day across the measured window.