Your weight is never set in stone. At least not unless you’re on Earth. Weight is simply an indication of the gravitational force acting upon … Read More

Think about the rocket on the pad at that moment. The fueled, cold engines is waiting for command to fire. He is waiting for the … Read More

When propellant is factored in to the math, rocket design goes from being an abstraction to something practical. You realize that each kilo of fuel … Read More

A Rocket thrust calculator takes data from geometry of nozzle and the rate at which propellant flows through it to produce a quantifiable amount of … Read More

Rocketry is hard: You can’t get anywhere without carrying enough fuel to get there. And then you’ve got a spacecraft design on the screen, all … Read More

But it’s not about explosions or fire. There is a quiet tyranny at the heart of every rocket launch. It’s called the rocket equation and … Read More

For moving an object from one circular orbit to another, there’s still only one best route: the Hohmann transfer, a double push on a single … Read More

Play an online game on a satellite link: you get instant lag. Pressing the key makes your character jump but only a fraction of a … Read More

If you’re reading this, odds are that you’re at a coffee shop, probably on your phone, and enjoying a good connection. Chances are you haven’t … Read More

When I think of a satellite, I imagine it to be a perfectly still object in space, silently surveying the earth below from on high. … Read More