All nichesSpace & Science

AI space and science video generator

Space and science shorts run on one emotion, and it is not curiosity — it is vertigo. The videos that travel are the ones that make a number physically felt: how long the light took, how many Earths fit inside, what would happen to a person standing there. Everything else is a lecture.

This niche also has a specific honesty burden. The visuals are illustrations, not photographs from an observatory, and the audience for science content is exactly the audience that will notice if you imply otherwise. Saying so on screen costs nothing and is the difference between a channel that survives its first fact-check comment and one that does not.

What the format actually looks like

  • Length: 60 secondsOne concept, built in a series of steps. Thirty seconds cannot establish a baseline and then break it; two minutes turns into a lesson. Sixty is the bucket where a scale escalation lands.
  • The zoom-out structureStart at something the viewer can hold — a city, a person, a plane. Then step outward, one comparison per scene, each one making the previous one look small. The last step should be the one that has no comparison left.
  • Calm narration, high-contrast contentThe material is already extreme, so the delivery should not be. A neutral, clear read makes an absurd number sound like a fact rather than a claim, and it is the register the established channels in this space all converge on.
  • Label the illustrationsA caption saying "illustration" or "artist's impression" on generated visuals is standard practice in science communication and it protects the channel. Castmint generates every scene image from the script — none of it is telescope footage, and the page you are reading will not pretend otherwise.

How to make one in Castmint

This is the prompt-to-video flow: your prompt becomes a script, the script is split into scenes, an image is generated per scene, a voice reads the narration and the captions are cut to the measured timing of that recording. It all composites into one MP4 you download and own.

Settings to start from

Visual styleCinematic
VoiceAlloy — Neutral, clear
Length1 minute
Aspect ratio9:16
Music bedAmbient
Cost per video25 credits

A prompt you can paste

A 60-second space short built as a zoom-out. Start with a passenger jet crossing an ocean, then step outward five times — each step making the previous distance look trivial — and end somewhere no comparison works. Calm, factual sentences. Caption the visuals as illustrations.

Cinematic handles deep-field and planetary imagery better than the flat styles, which is why this niche and mystery share a style while sharing nothing else. Alloy is the neutral, clear voice — the point is that the numbers sound stated rather than sold. The ambient bed is spacious and slow, which matches the subject instead of narrating it. Sixty seconds is 20 credits, 25 with music.

Accounts working in this niche

Real, live Space & Science accounts we watch, with our own note on what makes each one recognisable. Study the structure and the pacing — then make something original. Copying another creator's video is not a strategy and it is not allowed under our Acceptable Use Policy.

  • Kurzgesagt – In a Nutshell@kurzgesagtYouTube
    flat vector animation with a bright palette, calm narration on cosmic scale, black holes and the far future

Space & Science video questions

Are the space visuals real images?

No. Every scene image is generated from your script by an image model. They are illustrations, and in a science niche the right move is to label them as such in the caption rather than let a viewer assume otherwise.

Which voice suits science narration?

Alloy — neutral and clear. Echo works if you want the calmer, deeper register some space channels use. Both are standard voices, so neither adds a surcharge.

How much does a 60-second science short cost?

Twenty credits, or 25 with a generated ambient bed. The free plan's 30 credits covers exactly one of these, with the CASTMINT watermark.

Can I make a whole science series on a schedule?

Yes, from the Starter plan up — a series runs your standing prompt on a cadence you choose and produces the next video each time. You still review and publish each one yourself.

Make your first Space & Science video

Write the idea, pick the settings above, and the finished MP4 comes back a few minutes later. Every video is yours to download.

Try Castmint free

Free plan: 3 videos or 1 AI film clip, watermarked. No commitment.

Other niches

True CrimeCase-file shorts with documentary narration and dated captions.HorrorOne room, one threat, and a reveal you can hold back.MysteryRules, liminal places and endings that deliberately do not close.AI StoriesSerialised episodes with a narrator and a cliffhanger.MotivationOne idea, thirty seconds, and a hard cut on the last word.Facts & EducationOne fact per scene, fast, with the number in the first caption.HistoryOne event, one angle, chronology as the spine.Reddit StoriesA flat narrator, a moral dilemma, and a verdict at the end.LuxuryRanked countdowns where the price is the punchline.AI ASMROne object, one cut, and sound the engine generates itself.AI POVFirst-person, hands in frame, one unbroken shot.

Every plan, credit cost and limit mentioned on this page is on the pricing page, and the pipeline itself is described in full on what Castmint does.