Mercury, Venus, Mars, Jupiter, Saturn, Neptune and Uranus could be visible, but not all can be seen by the naked eye.

The asteroid is hurtling towards us at a zippy 15,000 miles per hour, according to the space agency's Jet Propulsion ...

By 1990, Earth Day went global as 200 million people in 141 countries celebrated by calling attention to various environmental issues. Today, Earth Day is one of the largest secular observances in ...