Neptune, long believed to be dark blue, is actually very pale like Uranus, scientists say. They used modern telescopes to re-assess artificially enhanced images taken by NASA's Voyager 2 probe. We can ...

Just looking at the deep blue of the sea brings relaxation and deceleration for many. It’s not just the vastness that impresses, but also the color of the water. But why is the sea actually blue?

A large swath of Earth’s oceans changed color over the past 20 years — and human activity is suspected to have caused it, a new study reports. That deep blue color depicted so richly in postcards is ...

A large swath of Earth’s oceans changed color over the past 20 years — and human activity is suspected to have caused it, a new study reports. That deep blue color depicted so richly in postcards is ...