Cosmic nonsense tools. Is anyone out there?
Enter your weight. Find out what you'd weigh on Jupiter, the Moon, or a neutron star.
You run 100m in your best time. In those same seconds, how many times has light circled the Earth?
Pick a destination. Guess how long light takes. Then get roasted by the universe.
Light moves at 299,792 km/s. Pick a destination, guess how long it takes, then see how close you were.
The Solar System orbits the galaxy at 828,000 km/h. Since you were born, where are we now?
Fly near light speed for a year. Come back. Everyone you knew is old or gone. How much younger are you?
Your Amazon package is going to Mars. Pick a shipping method. Find out when it actually arrives.
When you look at the Moon, you're seeing it as it was 1.3 seconds ago. Watch it happen live.
How many civilizations in the Milky Way could be sending us messages right now? Play with the variables.
Space is a vacuum. Sound can't travel. But if it could, what would the Sun sound like? And when?
What's the maximum number of pieces you can cut a pizza into with N straight cuts? Spoiler: it's not N².
Enter a distance. See how long light takes. To Alpha Centauri? To the Moon? To your coffee mug?
How many seconds ago did dinosaurs go extinct? How long since the pyramids? Scale your sense of time.
How high can you jump on Earth? Find out how high you'd soar on the Moon, Jupiter, or a comet.
Enter your age. See how many billions of km you've already traveled through space without moving.
If the Sun were a basketball, where would Earth be? How far? Pick a scale object and find out.
Real Sun diameter = 1,392,700 km. If it were scaled down, here's where everything lands.