A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

One savvy homeowner detailed how they discovered a major problem with their Tesla's solar panels thanks to a clever hack.

The stealthy startup plans to use a network of satellites to harvest sunlight and send it to Earth using infrared lasers.

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...