Jovan sent in this link – https://www.scientificamerican.com/article/did-a-meteor-from-another-sta… … did a meteor from another star strike the Earth's atmosphere back in 2014? Stars and planets routinely hurl smaller objects into inter stellar space as a consequence of orbital mechanics, we are told. The recent discovery of Oumuamua is a case in point – supposedly an interstellar object. Extrapolation of a possibility is said to show, by statistical calculation, that many billions of such objects may have passed through out solar system from star systems in our galaxy, the Milky Way. For every big object, such as Oumuamua, there should be many more objects of smaller size out there (at any given time). After all, they say, cosmic rays and flakes of stardust occasionally strike spacecraft. Two US based astronomers argue that a small meteor observed in January 2014 was actually an outcast from another star system. The assumption is that if an incoming meteor's speed exceeds 42km a second its trajectory could be hyperbolic (a passer by in other words). It is moving too fast to be captured by the gravity of the Sun. The 2014 meteor, seen off the coast of Papua-New Guinea, was moving at 44km a second – which was later adjusted to 60km a second by its point of entry, overtaking the Earth from behind. Could such objects transfer life from one planetary system to another?