Billionaire Elon Musk-led SpaceX on Sunday launched a shipment of ants, avocados and a human-sized robotic arm through a recycled Falcon rocket to the International Space Station (ISS). The delivery is SpaceX's 23rd for NASA in just under a decade. SpaceX's Dragon capsule is carrying more than 2,170 kilograms of supplies and experiments, including ice cream, for ISS' seven astronauts.