"Instead of following a relatively circular orbit, like the Earth or Mars, HD 20794 d follows an elliptical trajectory with large changes in the distance to its star during its revolution." ...

Documentary filmmaker Rob Stewart doesn’t believe there is any such thing as a lost cause. In 2007, he released a film that aimed to rehabilitate the image of sharks—feared and hated after ...

Richard Taylor reports on the low-cost satellite technology providing revolutionary ways to view life on Earth.

THE BBC is rolling out support for new pixel-packed Ultra HD 4K format with a new trailer for Planet Earth II online. Here's how you can watch online NOW.

Our closest neighbors, Mars and Venus, have similar revolution times to us here on Earth. One year on Mars takes about 1.9 Earth years, while Venus gets to celebrate the new year every 225 days.