TRAPPIST-1's seven worlds headline Astrum Extra's exoplanet compilation
Alex McColgan's long tour of alien planets passed 200,000 views in five days, with Enceladus and Perseverance close behind on the shelf.
Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.
These Exoplanet Discoveries Could Change Everything
"These Exoplanet Discoveries Could Change Everything" is a long Astrum compilation about worlds around other stars, posted on Astrum Extra, the side channel where the space team behind Astrum puts its longer cuts, sleep-friendly playlists and anything that does not fit the main channel. The tour runs from the latest exoplanet finds to the strangest planets ever detected, and ends on the question the description puts plainly: could life exist in the TRAPPIST-1 system, home to the most Earth-like planets found so far?
It was the only upload of the week, and it did not need company. Five days in, it has passed 200,000 views and is the quickest mover on the shelf. Two September compilations keep it busy, though: a look at the hidden ocean of Saturn's moon Enceladus is still drawing a steady crowd at twelve days old, and the Perseverance rover's Mars discoveries, now close to a million and a half views, keep ticking along.
The comments read like a bedtime ritual. Many viewers say Alex McColgan's voice sends them to sleep, and one admits to watching twice, once at night and again in the morning to catch what they missed. Others pitch ideas, among them a video about what aliens in the TRAPPIST system would see of Earth, given that the light reaching them left here around 1986. Another wants to know whether the team has thought about life built on something other than water.
The channel ran a little above its usual pace and picked up about 2,000 subscribers. Among the science channels nearest its size it sits in the middle by subscribers, yet no one gathered more views over the seven days. Bizarre Beasts had the other notable week, running well past its own usual pace.
Published on Trari
Where next?
What viewers say
Alex McColgans voice is like a sleeping pill, 11pm off goes the light, on goes Astrum and I go out like the light.
Best thing for him is, he gets two views because I have to watch again in the morning!❤@AndyGlazsSee it on YouTubeVideo idea: What would a life form find if they were probing Earth from the TRAPPIST system with their telescopes, as we are?
Since it's about 40 light-years away, they'd be seeing Earth as it was in 1986! 🔭🤔💡@adamdobson7291See it on YouTubeI was like “why is the sound so terrible” but I was muffling it with my blanket. So relaxing to explore space from my bed. ^^
@letsnotgetstressed8552See it on YouTube
4 more comments
Every new exoplanet makes the universe feel less empty… while somehow making the silence from everywhere else even stranger 😅
@SleepyScienceMysteries-n5dSee it on YouTubeAstrum: something something reddwarf something reddwarf
My brain: "🎵 It's cold outside, there's no kind of atmosphere..."@mildpigeonSee it on YouTubeSomething I must ask and know: How much has the Astrum team considered potential types of life that use primary solvents other than water?
@Drifting_DailySee it on YouTubeWe should look after G Stars!
@FadingVitalsSee it on YouTube
Public comments from the video's page on YouTube
The videos drawing views on Astrum Extra right now
- Channel
- Astrum Extra
- Subscribers
- 326,000 ▲ 2,000 this week
- Channel views, last 7 days
- 1,543,590
- Videos published this week
- 1
- Video published
- October 4, 2026
- Video views so far
- 213,895
- Views on its first day
- 80,779
The numbers
Here is how Astrum Extra's week looks in figures.
💡 Test your knowledge
Enceladus, the subject of another busy Astrum Extra compilation, is a moon of which planet?
Enceladus orbits Saturn, as the compilation's own title says, and sprays water from an ocean beneath its icy crust.




