The Joro spider (Trichonephila clavata), is a large species of spider from Japan that has come to the US. They have exceptionally strong silk and create unusual webs.
Small, young Jobo spiders may use ballooning to disperse themselves. Ballooning is when a spider releases a long strand or strands of web to catch the wind and float away for long distances. The spiders are little pilots flying their vehicles. It would be incorrect parlance to call those spacecraft.
This exotic spider silk and the ballooning have been studied for a variety of applications.
It is likely that the US Defense Dept. has studied this for possible military applications, such as for dispersal of listening devices or for use in quickly extricating soldiers from a battlefield.
As part of this research, scientists would need to recover those little spider crafts to study them.
Here's another quote...
"These are retrieving non-human origin technical vehicles, call it spacecraft if you will, it’s probably not the right parlance, but no-kidding, non-human exotic origin vehicles that have either landed or crashed."
