Hubble engagement report
@NASAHubble - 8.9M followers on X
Measured over 15 original posts from a 30-day window, last computed on October 24, 2026.
Engagement
A typical post picks up 2.5K interactions against 8.9M followers, an engagement rate of 0.028%. Measured over 15 original posts, its engagement rate beats 50% of 20,182 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 79K times each, and 3.19% of those impressions turn into an interaction. That is about 0.89% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.1 post a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 14:00 UTC, and Thursday is the busiest day of the week. Of the 15 posts sampled, 100% carry an image or video, 53% are part of a thread and 60% link out. The account's strongest tracked post pulled 25K interactions, about 11x its own typical post.
Measured over 15 original posts from a 30-day window, last computed on October 24, 2026.
Compared with accounts its own size
Hubble's engagement rate beats 50% of the tracked X accounts closest to it in follower count (20,182 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 80% 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 0.028%, Hubble 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%.
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 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.
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 | 60% 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.
- 60% 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 265 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
- Jul 1, 202611x their median
What Did Hubble See on Your Birthday?: Expanded Edition! π₯³ In celebration of America's 250th birthday week, now you can find *five* Hubble views taken on your special day. Discover yours and let us know your favorite in the replies: https://t.co/QqEpU35JYQ https://t.co/AtAc9NnZeR
- Jul 1, 20264.6x their median
Have you looked up what our @NASAHubble telescope saw on your birthday? Our popular page has a new look β and now, you can use it to find five stellar sights that Hubble was observing on whatever day you choose. Check it out: https://t.co/zV0oN7h5vs https://t.co/7t56QI6wFq
- Oct 1, 20262.5x their median
Happy International Music Day! π΅π¦ Sonifications like this one of the Butterfly Nebula reconceptualize data in images by assigning musical elements to information like position and brightness. β¬οΈ https://t.co/DAexZ6gMdK
- Sep 2, 20262.2x their median
A 10/10 view! πͺ With Hubble, astronomers discovered a new "decagon" encircling Saturn's south pole. Scientists think this giant 10-sided atmospheric wave might be an entirely new type of phenomenon evolving on the gas giant: https://t.co/XltULqCYLj https://t.co/ltNkEUv8gO
- Jul 4, 20262.5x their median
Happy 250th Independence Day, America! πΊπΈ Hubble's birthday gift to the nation is this new image of NGC 6426, a glittering star cluster that looks like a sparkler waving on a dark night. Learn more about this Fourth of July view: https://t.co/oBThpzljEM https://t.co/R47muw0XYa
- Oct 8, 20261.9x their median
What's in a wavelength? Different "types" of light unveil different data about our universe. Hubble detects visible light, along with some near-infrared wavelengths that "cut through" clouds of gas and dust, as seen in this view of the Pillars of Creation β¬οΈ https://t.co/pByxYZxSHp
- Jul 21, 20261.9x their median
The final space shuttle mission touched down 15 years ago today, marking the end of NASA's 30-year Space Shuttle program. As the world's first reusable spacecraft, the shuttles accomplished so much over 135 missions. From building and supporting the @Space_Station, to launching and servicing missions a variety of commercial and scientific satellites such as @NASAHubble, to conducting groundbreaking research, it left an enduring legacy as a platform for exploration, science, and international cooperation.
- Aug 13, 20261.7x their median
In these cosmic captures, the Lion Nebula is the mane attraction π¦ A dying star casts off its outer layers to create this intricate structure of gas and dust. Scientists think that it will disperse in about 10,000 years... which is very short, in astronomical terms. β¬οΈ https://t.co/Ik4JXOtijd
- Oct 6, 20261.6x their median
About 200,000 light-years away, the star cluster NGC 290 glitters within the Small Magellanic Cloud β a small galaxy orbiting our Milky Way. NGC 290 stretches 65 light-years across. The stars in this cluster are loosely bound to one another by gravity: https://t.co/0bD3z6pebU https://t.co/2Rh7IoVytj
- Jun 26, 20261.8x their median
The Chandelier Cluster β¨π Every "lightbulb" in this cosmic chandelier is actually an individual star, located about 27,000 light-years away. This is a globular star cluster, which means it's a tightly packed group of stars held together by gravity: https://t.co/GTbyXKTwi5 https://t.co/0HMeB1p8NV
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 2.5K interactions against 8.9M followers, an engagement rate of 0.028%. Measured over 15 original posts, its engagement rate beats 50% of 20,182 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 79K times each, and 3.19% of those impressions turn into an interaction. That is about 0.89% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.1 post a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 14:00 UTC, and Thursday is the busiest day of the week. Of the 15 posts sampled, 100% carry an image or video, 53% are part of a thread and 60% link out. The account's strongest tracked post pulled 25K interactions, about 11x its own typical post.
- What is Hubble's engagement rate on X?
- Hubble (@NASAHubble) has an engagement rate of 0.028%, based on the median interactions across 15 original posts from the last 30 days against 8,895,862 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.028%, Hubble 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 @NASAHubble have real engagement?
- Its engagement rate beats 50% of the tracked X accounts closest to it in follower count (20,182 accounts), which puts it in the middle of its size range 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 @NASAHubble post?
- Most posts go out around 14:00 UTC, and Thursday is its busiest day, at roughly 1.1 posts per day across the measured window.