New images from ESA's Biomass satellite reveal forests, volcanoes, deserts and glaciers in striking detail, hinting at what's still to come.

The difference between how light behaves on Earth and how it travels in the emptiness of space, explains the beautiful blue skies and the vast darkness of space. Why is the sky blue in colour?

Regulus is a bright blue star in the constellation Leo, which is often called the 'lion's heart'. It regularly appears close ...

From the ISS, scientists are capturing rare lightning above storms that could impact radio, climate, and safety.

From deep blue night skies to flowering yellows that attract bees, from the fiery reds of blood to the orange of roaring ...

The last to get out, Kerianne Flynn, pointed at the sky and shouted: "I went to space ... Earth's climate and ozone layer. On its web page under the title "Protecting our Planet" Blue Origin ...

A mysterious spiraling blue ... Earth, according to experts. Time-lapse video taken from Croatia at around 4 p.m. EST, or 9 p.m. local time, shows the glowing light spinning across the sky in ...