It was recently revealed that Elon Musk, 51, the man with an estimated net worth of nearly US$240 billion, has nine children . The number was previously thought to be seven, until it was unexpectedly unveiled that a Neuralink employee also had twins with Musk. The Tesla CEO has previously said he is doing his part to “boost” the US population after its birth rate saw a downward trend. Musk has also dated Aquaman star and Johnny Depp’s ex Amber Heard, actress Talulah Riley and, currently, Elvis ’ Natasha Bassett, although he doesn’t have kids with them (yet?). So, the…