Good one to remember next time you want to win an argument. Quite an interesting article.
Each one of us may be made in part from extragalactic matter, claims a new study.
Up to half the matter in our Milky Way may come from distant galaxies up to one million light years away, making us 'extragalactic immigrants', according to astrophysicists from Northwestern University.
The research, published in theMonthly Notices of the Royal Astronomical Society, could completely transform our understanding of how galaxies formed after the Big Bang.