Up at the edge of space, ionized particles stream out of Earth's atmosphere to be forever lost to the solar system. Some of this flow is simply due to sunlight heating up the thin air at that ...

The feature sprawled across 1,000 km in Earth's upper atmosphere in the summer of 2014, and lasted for around eight hours.

Scientists sampling the upper atmosphere have found metal elements in aerosol particles they say are from thousands of rocket boosters and satellites that have re-entered from space.

Yet, Arkisys, the company Barnhart cofounded in 2015, is focusing on low Earth orbit (LEO) — the buzzing region closest to Earth up to altitudes of about 1,200 miles (2,000 km).

Space junk and meteoroids are falling to Earth every year, posing a growing risk as they re-enter the atmosphere at high speeds. Researchers are using infrasound sensors to track these objects ...

For decades, satellites passing over Earth's north and south poles have experienced a flow of ions from the upper atmosphere into space. Dubbed the 'polar wind', the source of this flow had eluded ...