Space junk?’ What is the ‘foamy’ mystery object that washed ashore on an SC beach?

A mystery came out of the ocean on South Carolina’s Seabrook Island, and authorities haven’t yet identified what some are calling “space junk…”
NASA Maps Indonesia Quake, Tsunami Damage

A 7.5-magnitude earthquake on Sept. 28 in northern Indonesia and the devastating tsunami that followed it killed more than 1,400 people and left a large trail of destruction. This map, produced by NASA’s Advanced Rapid Imaging and Analysis (ARIA) team, shows that damage.