HASHTAGS/#astronomy

#astronomy

The most viral posts using #astronomy across TikTok, Instagram, X, Facebook and Pinterest — ranked by real engagement tracked by ViralHunt.

7.8Kposts tracked
297.8Mtotal engagement
9networks

We track 7843 posts using #astronomy across 9 networks, carrying 297.8M engagement between them — an average of 38K per post.

It is used most on Bluesky: 3369 of the 7843 posts we hold, 43% of the total.

Where it performs hardest per post, though, is TikTok, averaging 195.4K — so the tag is posted most in one place and lands best in another, which is exactly the difference worth knowing before choosing where to use it.

Ranking comes from the posts themselves rather than from how often the tag appears, and it is recalculated as new posts are collected. How we measure this →

Top #astronomy posts ALL NETWORKS

INST
Find your birth twin 🪐 👉 Clips 🎥: melodysheep #space #astronomy #moon #milkyway #nightsky
@spacemelodic · Instagram
20.3M
TIKT
#space #universe #astronomy
@byafterspace_ · TikTok
16.4M
INST
Space 🪐 Clips: melodysheep #space #astronomy #moon #milkyway #nightsky
@afterspace._ · Instagram
12.5M
TIKT
#space #universe #astronomy
@byafterspace_ · TikTok
6.5M
TIKT
Replying to @hosedude A journey to the Surface of Last Scattering! Looking out in space is looking back in time. How far can we look? #astronomytok
@evanthorizon · TikTok
6.4M
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Most viral #astronomy on Bluesky

BLUE
Welcome to the Astronomy feed! Contains a filtered view of astronomy content on Bluesky. • You need to sign up for your posts to appear here. • Then,
@astrosky.eco · Bluesky
3.2K
BLUE
In a historic first, the James Webb Space Telescope has performed a direct mass measurement of a black hole in the early Universe. Located 13 billion
@nasaupdates.bsky.social · Bluesky
1.8K
BLUE
Meet the Squid Galaxy! Messier 77, located 45 million light-years away, glows in this new Webb Telescope image. Those "tentacles" are actually vast fi
@nasaupdates.bsky.social · Bluesky
1.6K
BLUE
Think Abell 2029 is calm? Think again! Long thought to be the most "relaxed" cluster in the universe, deep new Chandra data reveals it’s actually reco
@nasaupdates.bsky.social · Bluesky
1.1K
BLUE
NASA's James Webb Space Telescope has found the strongest evidence yet for "black hole stars!" Data from a "little red dot" named GLIMPSE-17775 sugges
@nasaupdates.bsky.social · Bluesky
865
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Most viral #astronomy on Instagram

INST
Find your birth twin 🪐 👉 Clips 🎥: melodysheep #space #astronomy #moon #milkyway #nightsky
@spacemelodic · Instagram
20.3M
INST
Space 🪐 Clips: melodysheep #space #astronomy #moon #milkyway #nightsky
@afterspace._ · Instagram
12.5M
INST
The crescent Moon, Venus, and Jupiter are aligning in a rare, naked-eye planetary triple conjunction. Telescope details: Celestron Starsense explore
@astrotales_by_syed · Instagram
4.7M
INST
🌞🌍🌑 . . . . #sun #moon #earth #space #viral #universe #day #night #physics #astrophysics #astronomy
@learnandthinks · Instagram
4.4M
INST
These pillars stand the test of time.⁣ ⁣ Journey with us through the James Webb Space Telescope’s breathtaking view of the Pillars of Creation, where
@nasa · Instagram
3.3M
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Most viral #astronomy on TikTok

TIKT
#space #universe #astronomy
@byafterspace_ · TikTok
16.4M
TIKT
#space #universe #astronomy
@byafterspace_ · TikTok
6.5M
TIKT
Replying to @hosedude A journey to the Surface of Last Scattering! Looking out in space is looking back in time. How far can we look? #astronomytok
@evanthorizon · TikTok
6.4M
TIKT
The size of the observable universe, it could even be alot bigger 🤯 #universe #scale #massive #size #zoom #mindblown #mindblowing #scary #space #astro
@lord_of_the_stars · TikTok
5.2M
TIKT
SATURN WITH THE MOON TONIGHT! #astronomy #tiktoklearningcampaign #saturn #moon #telescope
@sunshinenate · TikTok
5.1M
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Most viral #astronomy on Douyin

DOUY
The World Awaits August 12, 2026: Three Astronomical Wonders in One Day
@Starlight Explorer · Douyin
2.5M
DOUY
Why is the speed of light set at 300,000 kilometers per second?
@Child of the Stars · Douyin
164.6K
DOUY
Do You Think You're Awake? Maybe Reality is Just Another Layer of Dream
@Science Popularization Guy · Douyin
152.2K
DOUY
We've All Been Deceived! The Moon Is Not a Dead Rock, China Reveals Shocking Secrets of the Far Side
@Banana Science · Douyin
121.4K
DOUY
The First Man in Space - Gagarin's Brave Journey
@Universe Discovery · Douyin
95K
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Most viral #astronomy on Facebook

FACE
Facebook post by @Hashem Al-Ghaili
@Hashem Al-Ghaili · Facebook
8.9K
FACE
Facebook post by @Hashem Al-Ghaili
@Hashem Al-Ghaili · Facebook
8.9K
FACE
Facebook post by @Hashem Al-Ghaili
@Hashem Al-Ghaili · Facebook
8K
FACE
Facebook post by @Hashem Al-Ghaili
@Hashem Al-Ghaili · Facebook
7.1K
FACE
Facebook post by @Hashem Al-Ghaili
@Hashem Al-Ghaili · Facebook
6.7K
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Most viral #astronomy on X / Twitter

X /
This sunrise over the ocean is a mood Good morning everyone! RyanPernofski #Art #Astronomy
@latestinspace · X / Twitter
342
X /
This Hubble telescope portrait reveals the gaseous remains of an exploded massive star that erupted approximately 1,700 years ago. Caption + Credit:
@Discovery · X / Twitter
319
X /
Exploding star breaks record for brightest supernova: http://ow.ly/PnVSR #astronomy
@ScienceNews · X / Twitter
280
X /
Most massive star discovered! The behemoth is 265 times the mass of our sun: http://on.natgeo.com/cwB5ZF #astronomy
@NatGeo · X / Twitter
224
X /
Dark galaxies are starting to come out of hiding: http://ow.ly/OQiOJ #astronomy
@ScienceNews · X / Twitter
183
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Most viral #astronomy on Mastodon

MAST
#SolarEclipses and Culture #Astronomy #Picture of the Day https://apod.nasa.gov/apod/ap260902.html #APOD
@mkwadee · Mastodon
267
MAST
RE: https://stefanbohacek.online/@exoplanets2/117229812465372371 Please enjoy! #space #science #exoplanets #astronomy #ExtraterrestrialLife
@stefan · Mastodon
174
MAST
NASA’s new telescope is named after astronomer Nancy Grace Roman – but who was she? by Ian Whittaker The US astronomer battled discrimination in a mal
@gutenberg_org · Mastodon
166
MAST
New milestone reached 🥳 Nearly 500 segments of the main mirror of our Extremely Large Telescope (ELT) have now arrived from Europe at the ELT Technica
@esoastronomy · Mastodon
160
MAST
Spotted this great image, yes a real image, last night! It looks like a firework going off! It's of the supernova remnant Pa 30 and was taken by the G
@CosmicRami · Mastodon
143
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Most viral #astronomy on Pinterest

PINT
Follow for a sponsored giveaway! The Real Size Of The Universe...🪐 #universe #space #astronomy #universe #physics
@joshtospace · Pinterest
29.8K
PINT
Pinterest post by @joshtospace
@joshtospace · Pinterest
13.3K
PINT
Pinterest post by @
6.5K
PINT
science model
@genz_ideas_ · Pinterest
5.3K
PINT
Scale of the Universe. #astronomy #space
@joshtospace · Pinterest
4.4K
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Most viral #astronomy on Tumblr

TUMB
[Astronomical anthology]. - Franklin
@Penn Libraries Manuscripts · Tumblr
3.9K
TUMB
astronomical/astrological diagrams from an astronomical-astrological composite manuscript, alsace, 15th c. source: Vatican,...
@in strange things do i reside · Tumblr
2.8K
TUMB
the Sun and the Moon in their chariots astronomical miscellany, Canterbury ca. 1050 BL, Cotton Tiberius B V/1, fol. 47r
@discarding images · Tumblr
2.8K
TUMB
astronomer fox Almagest, Paris ca. 1309-1316 BL, Burney 275, fol. 390v
@discarding images · Tumblr
1.7K
TUMB
Anatomical man by Limbourg brothers, c. 1411-1416. (transparent)
@ACHASMA · Tumblr
1.1K
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#astronomy in five questions

What is #astronomy and where is it used?

A hashtag with 7.8K posts tracked by ViralHunt across 9 networks, mostly on Bluesky (3.4K posts). Those posts add up to 297.8M engagement, about 38K per post.

Where does #astronomy perform best?

On TikTok: 195.4K engagement per post on average, even though it is posted more on Bluesky. It is used in one place and works better in another.

When do people post with #astronomy?

Mostly on Fridays, around 15:00 UTC: 23% of the 7.7K dated posts fall in the three hours around that time. Posting when the tag is active is posting when someone is reading it.

Who uses #astronomy most?

itscosmoknowledge (Instagram, 2707 posts), spacefeed.bsky.social (Bluesky, 1139 posts), skycalpro.com (Bluesky, 323 posts), science (Instagram, 235 posts), cosmoknowledge (TikTok, 200 posts), usngo.bsky.social (Bluesky, 95 posts).

Which hashtags go with #astronomy?

Other tags with volume on the same networks: #gaming, #photo, #vtuber, #photography, #nba, #digitalart.

When people post with #astronomy

Hour of day and day of the week of the 7.7K dated posts carrying this tag (times in UTC). The busiest hour and day are marked.

By hour (UTC)

00061218

By weekday

SunMonTueWedThuFriSat

Track #astronomy across every network

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Explore more hashtags

#gaming#photo#vtuber#photography#nba#digitalart#furryart#furry#indiegame#history#ai#science