Before we dive in, let’s do a quick review to appreciate what it actually means for an object to be in orbit. As Isaac Newton’s famous first law of motion states, an object in motion will stay in ...

The Chinese weather satellite Fengyun 1C was deliberately destroyed by China in an anti-satellite weapon test in 2007 and peppered low-Earth orbit with an estimated 3,000 pieces of shrapnel. In 2012, ...

Old rocket parts and decommissioned satellites are whizzing around in low Earth orbit, where they risk colliding with the ...

In the case of the planets, Neptune's migration created a gravitational well for resonant objects like Pluto. Neptune keeps Pluto in check despite its strange orbit. For 20 years of 248-year orbit, ...

Hundreds of satellites may soon be flying in orbital regions that are already too packed to allow safe and long-term ...

(CNN) — Once upon a time, gazing at the night sky was an escape from manmade messiness on Earth. Not anymore. Nearly 70 years after the launch of Sputnik, there are so many machines flying through ...