Sen, a company based in London, provides views of Earth from orbit, with the hopes of making an experience usually reserved ...

Noctilucent clouds, Earth's highest clouds, shine blue in the twilight sky from late May to August in the northern hemisphere ...

On first glance, you might think this was a nebula, especially if given the photo was taken by an astronaut. Rather, this ...

Jumping back in time, Thuban was positioned as a North Star some 4,700 years ago, as early civilizations thrived in ...

According to NASA, the aurora on Earth may last only a few minutes, but on Saturn, it can last for days. In the 2010s, aurora ...

In photos The details in this photograph include the airglow of the atmosphere dividing Earth from space — yellow-green at an ...

A little over 240 years ago, birds were the only things that could fly above the ground untethered without eventually falling ...

We've even been asked if you could run solar cells during the long lunar night on reflected earthlight, so we decided to ...

A little over 240 years ago, birds were the only things that could fly above the ground untethered without eventually falling ...