"These objects really could be anywhere in the solar system at any given time." One million alien visitors from another star system could already be lurking in the solar system. We aren't talking ...

[Becky Stern] likes to harness the power of the Sun. Most of us will immediately think of solar cells and other exotic solar energy techniques. But [Becky] shows how to make a hot air balloon ...

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 ...

This package is completed with batteries and an array of solar cells ... The Project Loon autolauncher system in action. While initially Loon balloons were launched manually, this process was ...

Credit: University of Western Ontario Gregg, a Ph.D. candidate in physics and astronomy, developed a computer model to study our solar system, Alpha Centauri and the interstellar activity—the ...

Aerostar, a South Dakota-based company, has flown nearly a dozen balloons over wildfires in the last few years. They’ve been fitted with solar panels ... a communications system, the balloon ...