EarthSky engagement report
@earthskyscience - 764K followers on X
Measured over 108 original posts from a 30-day window, last computed on September 29, 2026.
Engagement
A typical post picks up 27 interactions against 764K followers, an engagement rate of 0.004%. Measured over 108 original posts, its engagement rate beats 21% of 21,185 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 2.9K times each, and 0.947% of those impressions turn into an interaction. That is about 0.373% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 3.8 posts a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 15:00 UTC, and Sunday is the busiest day of the week. Of the 108 posts sampled, 98% carry an image or video and 95% link out. The account's strongest tracked post pulled 9.3K interactions, about 343x its own typical post. Recurring topics include #moon, #sun, #jupiter.
Measured over 108 original posts from a 30-day window, last computed on September 29, 2026. Recurring tags: #moon, #sun, #jupiter.
Compared with accounts its own size
EarthSky's engagement rate beats 21% of the tracked X accounts closest to it in follower count (21,185 accounts, accounts of similar size (decile 10 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 45% 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 0.004%, EarthSky sits below the 10th percentile of the 212,567 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.025%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.004% |
| 25th percentile | 0.025% |
| 50th percentile | 0.146% |
| 75th percentile | 0.696% |
| 90th percentile | 2.61% |
| 99th percentile | 82.7% |
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 15:00 UTC, and Sunday 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 | 98% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 95% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | no effect | -2% to -1% | 42K |
- 98% 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.
- 95% 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 269 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
- Sep 28, 2026343x their median
BREAKING 🚨: There’s now a 50-foot bronze statue of Prometheus standing outside SpaceX's Starbase in Texas In Greek lore he stole fire from the gods and gave it to humans The statue holds a torch toward the same sky Starship launches into 🔥 (📸@sparkyinfinity) https://t.co/LxlJgmPgUR
- Sep 25, 202642x their median
Get ready to wave to an asteroid 👋🪨 In 2029, asteroid Apophis will swing by Earth, passing safely about 20,000 miles from the surface. The OSIRIS-APEX mission will meet up with the asteroid shortly after, to map the surface and study its chemical makeup. https://t.co/SShNdmLM14
- Sep 27, 202618x their median
Tomorrow night, ESA's JUICE spacecraft will make a close pass by Neptune as seen from the U.S.—and along a narrow path across North America, it will transit directly across Neptune. JUICE should be around mag 12–13. Here's what the encounter will look like from different cities. https://t.co/wYvxJHrEeU
- Sep 28, 202612x their median
ESA's JUICE mission will gain another 3.7 km/s speed with respect to the Sun with this Earth-gravity-assist. Enough to get it to Jupiter. That's about 60x faster than a golf ball leaves my club. https://t.co/izhsSdCgJj
- Aug 27, 202611x their median
There's a chance tonight's red eclipsed moon could float alongside green auroras! That's because a burst of fast solar wind is set to trigger geomagnetic storms tonight. Plus, there's an even better chance for #auroras tomorrow. https://t.co/dVTIcoTvEg https://t.co/Rb2s6Ijc2W
- Sep 7, 202610x their median
Jim Grant in Ocean Beach, California, caught the elusive #greenflash on Monday. Conditions caused by a heat dome over the US West helped produce the bright green color. Thank you, Jim! https://t.co/f1TiEO9F28 What’s a green flash and how can I see one? https://t.co/hplmXah50T https://t.co/GnqeVPuOTn
- Nov 19, 20249.8x their median
Yes, we are also on Bluesky! You can find us there at @earthskyscience.bsky.social https://t.co/xNG1kVb7Gq
- Aug 26, 20269.3x their median
A big blast of solar material is coming our way! The M7 flare we reported yesterday hurled a coronal mass ejection into space. This blast is expected to reach Earth on Friday, where it could trigger beautiful #auroras at northerly latitudes: https://t.co/dVTIcoTvEg 📸 NOAA. https://t.co/9pLvkE9IrB
- Sep 7, 20266.0x their median
Get ready aurora watchers! A convoy of coronal mass ejections is bearing down on our planet, with the first arrivals expected from later today. #Auroras could be visible as far south as New York, London and northern France. Find out more: https://t.co/3nLNhdMDZm 📸 NOAA. https://t.co/noSodXHFIn
- Aug 27, 20264.6x their median
TONIGHT! Skywatchers across Africa, Europe and the Americas will see a deep lunar #eclipse overnight. The eclipse won’t quite be total. 96% of the #moon’s face will be within the Earth’s dark umbral shadow at the peak. ⚫️🌎 https://t.co/DHLCR7hTQu 📸 Robert Hall. https://t.co/5V6l5gJqIJ
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.
Recurring topics
The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.
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Reading these numbers
A typical post picks up 27 interactions against 764K followers, an engagement rate of 0.004%. Measured over 108 original posts, its engagement rate beats 21% of 21,185 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 2.9K times each, and 0.947% of those impressions turn into an interaction. That is about 0.373% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 3.8 posts a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 15:00 UTC, and Sunday is the busiest day of the week. Of the 108 posts sampled, 98% carry an image or video and 95% link out. The account's strongest tracked post pulled 9.3K interactions, about 343x its own typical post. Recurring topics include #moon, #sun, #jupiter.
- What is EarthSky's engagement rate on X?
- EarthSky (@earthskyscience) has an engagement rate of 0.004%, based on the median interactions across 108 original posts from the last 30 days against 764,178 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.004%, EarthSky sits below the 10th percentile of the 212,567 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 @earthskyscience have real engagement?
- Its engagement rate beats 21% of the tracked X accounts closest to it in follower count (21,185 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 @earthskyscience post?
- Most posts go out around 15:00 UTC, and Sunday is its busiest day, at roughly 3.77 posts per day across the measured window.