Your gateway to the cosmos
Dive into planets, moons, stars, galaxies, black holes, and the bold missions humanity has launched into the unknown.
Something new from the cosmos, every single day.
Why AstraNova
Knowing that a black hole bends light is a fact. Working out for yourself why it must is an education. AstraNova is built around the second one.
Fold a real light curve until a planet appears. Place a world on its orbit and watch its year fall out of the distance. The tools are not multiple choice.
Every star, every orbit, every photograph is real and published. The planet you find in the Observatory is TRAPPIST-1e, and you can go and look it up.
Every number comes with the evidence behind it. Not just how far away a galaxy is, but how anyone on Earth could possibly have worked that out.
Written three times, not translated once
English
A black hole bends the light that passes it.
Русский
Чёрная дыра искривляет проходящий мимо свет.
O'zbek
Qora tuynuk yonidan o'tayotgan yorug'likni egadi.
Interactive astronomy in Uzbek, for the first time. Every page, every fact and every question exists in all three languages.
Seven stops from the ground under your feet to the edge of the observable universe.
Learning path
Seven stops, in the order the distances actually go. Each one builds on the last, so by the time you reach black holes you already have everything you need to understand one.
· stops complete
Up next: The ground you stand on
Each stop sits at roughly its real distance. The gaps are the lesson: the jump from the Sun to the next star is bigger than every step before it put together.
Earth as a planet: its size, its place, and why it is the yardstick every other distance is measured against.
The Moon, tides, phases, and the only other world anyone has walked on.
Eight planets, their real orbits and real speeds, in a 3D system you can fly through.
How stars live, why they have colours, and what happens when they run out of fuel.
Take the telescope and find one yourself, in real published data, by the method astronomers use.
The Milky Way, its neighbours, and what a hundred billion stars held together by gravity looks like.
What a black hole is, how we photographed one, and why none of it breaks the rules you have just learned.
Your progress is saved on this device. Make an account and it follows you between your phone and your laptop.
Seven instruments
Not simulations of astronomy. The same measurements, made the same way, with the same thing going wrong: you never have enough telescope time, and the signal is always smaller than you want it to be.
Play
Short rounds against a clock. Get one wrong and it shows you why, then asks you again until it sticks.
Each one is a measurement somebody had to make.
99.86%
of the solar system is the Sun
Every planet, moon, asteroid and comet together makes up the other 0.14%.
100,000light years
across the Milky Way
Light itself, the fastest thing there is, needs a thousand centuries to cross it.
4 millionsuns
at the centre of our galaxy
Sagittarius A* was revealed in 2022, from data eight telescopes gathered in 2017.
25 billionkm
and still going
Voyager 1 left in 1977 and is now further from the Sun than anything else we have built.