Thin metallic tethers for Coulomb drag devices that tow satellites and spacecraft can now be produced more easily than before. Scientists of the Finnish Meteorological Institute have developed a method to produce multi-wire tether by twisting hair-thin metal wires.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/5e7b539d3b62a.jpg)
Source:
https://phys.org/news/2020-03-scientists-inexpensive-method-e-sail-tethers.html