Somewhere in the galaxy, an advanced alien civilization might harness energy ... in the Astrophysical Journal, told Mashable. Solar panels — made from silicon, which is abundant in the universe ...

It's likely that an advanced civilization might need so much power that they enclose their host star in solar energy-collecting satellites. These Dyson swarms will trap heat so any planets within ...

By the time astronomers became aware of the celestial visitor, it was already careening out of the solar system at 110,000 ... asteroid to a never-before-seen alien spaceship.