Good news: Team shows re-entry pollution can be measured. Bad news: There may be more of it coming

The SpaceX Falcon 9 rocket that burned up over Europe last year left a massive lithium plume in its wake, say a group of scientists. They warn the disaster is likely a sign of things to come as Earth's atmosphere continues to become a heavily trafficked superhighway to space. 

In a paper published Thursday, an international group of scientists reports what they say is the first measurement of upper-atmosphere pollution resulting from the re-entry of space debris, as well as the first time ground-based light detection and ranging (lidar) has been shown to be able to detect space debris ablation. 

The measurements stem from a SpaceX Falcon 9 upper stage that sprung an oxygen leak about a year ago, sending it into an uncontrolled re-entry. Then it broke up and rained debris down on Poland. The rocket not only littered farm fields, but also injected lithium into the Mesosphere ...