Earth just got an upgrade! If we made Earth 1,300 times bigger, we could make Earth the size of Jupiter. A new, super-Earth could be rocky, icy or gaseous. What would happen to your body on an Earth ...

In seven years’ time, it’s possible that an interstellar visitor will touch down on our planet’s surface with tremendous force. But Earthlings need not fear — not yet, anyway. That estimate, made ...