Solar power satellite (SPS) advocates have been dreaming of using space resources to build massive constructions for decades.

Less than a year removed from a total solar eclipse that darkened the Natural State for more than four minutes in spots, ...

So exactly how many solar system moons have we found? The answer, it turns out, depends on your definition of a moon. But this is likely just "the tip of the iceberg," Edward Ashton, an astronomer ...

The discovery points to what astronomers have thought for decades, that Saturn's rings were caused by a massive collision about 100 million years ago.