It was pun with Justin Sun @justinsunsteem and the star we are in orbit around. There is no super-whale like in Steem but what about Ethereum? Doesn't that have superwhales? Those people could corrupt the chain worse than it is.
As for the celestial object, once the sun burned out the early telegraph systems. That was called the Carington event. If it happened today, as with most of our electronics are always plugged in, there would be a lot of damage done to electronics.