How Can Astronauts Tell How Fast They’re Going?

Weirdly, spaceships have no direct way to gauge their own speed. Luckily, we can use some physics tricks to figure it out.
SpaceNews

Rhea Space Activity raises $6 million to develop GPS-free spacecraft navigation

WASHINGTON — Rhea Space Activity, a Washington, D.C.-based space technology startup, has raised $6 million in a Series A funding round to advance navigation software designed to operate without GPS, ...
Science Daily

AI just revealed ocean currents we’ve never been able to see

A new AI-driven method called GOFLOW is turning weather satellite images into highly detailed maps of ocean currents. By ...
Radio World

A Class on Predicting FM Radio Signals

In my latest Signal Spot, I had my Villanova students explore machine learning techniques to see if we could accurately ...
United States Army

The signal they cannot see: West Point Cadets research encrypting and decoding drone feeds

Cadet Ananya Ganesh did not expect to be a math major. Cadet Babe “BK” Kwasniak was planning to study history. Together, they ...
Aviation Week Network

U.S. Space Force Cancels Long-Troubled GPS Ground System

The U.S. Space Force on April 20 announced it is canceling its long-delayed GPS ground control system after lengthy speculation on its future. The Raytheon-built Global Positionin ...
PRIMETIMER

SpaceX launches the final GPS III satellite for the United States Space Force using Falcon 9

SpaceX is set to launch the final satellite in the United States’ advanced GPS III fleet for the U.S. Space Force on a Falcon ...