A daily window into the universe.
The home of a young explorer who looks up at the night sky and wonders — and wants to share that wonder with you, one fascinating fact at a time.
For a kid who loves the stars.
Every day, this site surfaces one verified piece of space knowledge: a planet that could float, a star you could fit a thousand suns inside, a spacecraft whispering home from beyond the planets.
It's chosen the same way for everyone, so the whole world discovers the same wonder on the same day. Come back tomorrow and there's a new one waiting — a small, steady habit of awe.
See today's fact →
Real wonder, never made-up wonder.
Why a fact a day?
Because the universe is too big and too beautiful to take in all at once. A single, well-told fact is something you can hold in your head, carry around all day, and share at dinner.
Built on real science
Every fact is checkable against NASA, ESA and JPL, and each one lists its source. The daily Photo of the Day comes straight from NASA's Astronomy Picture of the Day.
For curious minds of every age
Big numbers are made relatable, tricky words are explained, and every fact ends with something to wonder about.
Every message is read.
If something here made you look up at the night sky a little differently, or a fact sparked a question you can't stop thinking about — that's exactly the kind of message worth sending.
Send a transmissionSpace facts you'd love to see
A planet, a mission or a cosmic mystery you're curious about? Send it in. The fact bank grows from real curiosity.
Questions about astronomy
Every good question deserves an answer. If it's answerable with real science, it might become a future fact.
Corrections or sources
The universe is big and science keeps learning. If something needs updating, say so.
Just to say hi
Knowing that someone out there is looking up too is worth a message all by itself.
Teachers who want to use these facts in a classroom, journalists covering the site, or anyone with a collaboration idea — reach out with details. Educational use is encouraged and supported.
Good to know.
When does the fact of the day change?
At midnight Eastern Time. The fact is chosen from the date, so every visitor sees the same one on the same day — and it matches the daily social post and the weekly video.
Where do the facts come from?
Every fact is checkable against trusted sources like NASA, the European Space Agency (ESA) and NASA's Jet Propulsion Laboratory (JPL), and each one lists its source. When something isn't certain, it's left out rather than guessed.
Can I look up a fact from an earlier day?
Yes. Explore & Archive finds the fact for any date and lets you search the whole bank by word or category.
Who is it written for?
Curious minds of every age. The voice is warm and clear — readable by a smart ten-year-old, still interesting to a grown-up.
Can teachers use the facts in class?
Yes. Educational use is encouraged and supported. Reach out through the "Say hello" form with details.
What is the weekly video?
This Week in Space Wonders: every Sunday, the week's seven facts become one short video.
A new piece of the universe is waiting.
One verified fact, the same for everyone, until midnight Eastern Time.