Physicist who found spherical meteor fragments claims they may come from an alien spaceship – here's what to make ...
By Monica Grady
An exciting discovery leads to controversy as Harvard scientists collect fragments from interstellar meteor
By Marian Faa
'Anomalous' metal spheres unlikely to be alien technology, despite Harvard scientist's claim
By Joanna Thompson
Tug of war over interstellar meteor recovered from Papua New Guinea
By Richard Lloyd Parry