Deep underwater ‘hook’ reveals interstellar evidence

A deep-ocean expedition has discovered the first-known traces of a meteorite likely to have travelled from beyond our solar system – and, making finding needles in haystacks look easy by comparison, each fragment recovered from a depth of 1.7km is less than a millimetre across. Astrophysicist Avi Loeb’s team collected 50 tiny metallic spheres that … Continue reading Deep underwater ‘hook’ reveals interstellar evidence