
Copernical Team
Space weather is difficult to predict - with only an hour to prevent disasters on Earth

How planets form controls elements essential for life

First ever discovery of methanol in a warm planet-forming disk

VIPER Hits the SLOPEs

NASA's OSIRIS-REx Spacecraft Heads for Earth with Asteroid Sample

In the emptiness of space, Voyager I detects plasma 'hum'

Want to become a space tourist

NASA, Axiom Agree to First Private Astronaut Mission on Space Station

Flying at up to Mach 16 could become reality with UCF's developing propulsion system

We could detect extraterrestrial satellite megaconstellations within a few hundred light-years

Starlink is one of the most ambitious space missions we've ever undertaken. The current plan is to put 12,000 communication satellites in low-Earth orbit, with the possibility of another 30,000 later. Just getting them into orbit is a huge engineering challenge, and with so many chunks of metal in orbit, some folks worry it could lead to a cascade of collisions that makes it impossible for satellites to survive. But suppose we solve these problems and Starlink is successful. What's the next step? What if we take it further, creating a mega-constellation of satellites and space stations? What if an alien civilization has already created such a mega-constellation around their world? Could we see it from Earth?
This is the idea behind a recent article posted on the arXiv. It's based on an idea about how civilizations might grow over time, known as the Kardashev scale. It's based on the level of energy a civilization can tap into; Type I uses energy on a global scale, type II a star's worth of energy, and so on.