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, including bolides, which are meteoroids breaking apart in the sky. New research presented at the EGU General Assembly 2025 shows that infrasound signals can help track these objects, but the trajectory needs to be considered, especially for objects entering at shallow angles. This study highlights the importance of improving monitoring techniques for planetary defense and space junk management.

The European Space Agency’s Gaia mission has spotted an unusual family of stars all strangely eager to leave home – a family we couldn’t have discovered without the star-surveying spacecraft, and one unlike all others we have spotted to date.