Here’s how orbital dynamics wizardry helped save NASA’s next Mars mission

ESCAPADE’s path through space, relative to the Earth, has the peculiar shape of a kidney bean. In the world of astrodynamics, ...

General Atomics' Next-Gen Railgun Is Designed To Blast Missiles Out Of The Sky

Unlike missile systems, railguns rely on an electromagnetic current and kinetic energy to operate, shooting out a projectile ...
Survival World on MSN

Rifle Zero Distances Explained: Is 50, 100, or 200 Yards the Sweet Spot?

Because you’re catching the bullet on the upswing, a 50-yard zero often means you’re close to dead-on again around 160–170 ...
Investopedia

Total Cost of Ownership: How It's Calculated With Example

Alexandra Twin has 15+ years of experience as an editor and writer, covering financial news for public and private companies. Ebony Howard is a certified public accountant and a QuickBooks ProAdvisor ...
NerdWallet

Mortgage Income Calculator

See how much income you need for a $300,000 mortgage — or whatever home price fits your budget. Some or all of the mortgage lenders featured on our site are advertising partners of NerdWallet, but ...