Imagine spending an entire year floating in space, orbiting the Earth at 17,500 miles per hour, completely weightless. Sounds like a dream, right? But what does that actually do to your body? What ...

Astronomers have spotted a rare free-floating exoplanet drifting alone about 10,000 light-years from Earth, a solitary world that orbits no star and instead wanders through the Milky Way on its own.