The search for alien life takes many forms, from identifying Earth-like planets to scanning for extraterrestrial signals.

The minimum distance for a planet to keep a satellite in orbit is called the Hill sphere radius. The Hill sphere radius is based on the mass of both the larger object and the smaller object.

Gennady Abramenkov also presented a reconstructed site for the serial assembly of small-sized propulsion systems for the Sphere project. "The creation of mass production of spacecraft is the main ...