Starwatch: Saturn makes its closest approach to Earth of the year | Saturn

The 6th mass extinction hasn't begun yet, study claims, but Earth is barreling toward it

All systems go in Houston as NASA prepares return to Moon: From 2024, astronauts will travel aboard Orion for the same trip, and the following year, at the earliest, Americans will once again step foot on the Moon.

Scientists Say 'Space Bubbles' Could Shield Earth From The Sun, But Would It Work?