The Egyptian pyramids may align with an ancient north star. NASA scientists found that star undergoes never-before-seen eclipses.

The star that some researchers think served as the north star for the ancient Egyptians...

Australia's fires have burned more than twice as much land as the summer's Amazon blazes. They're part of an ominous carbon-dioxide feedback loop.

Since September, 14.6 million acres of Australia have burned in an unprecedented season...

Stunning images from space reveal the shocking extent of Australia's bushfire crisis

Australia's fires have lasted for months, burned millions of acres, and belched out a...

Dazzling NASA images from space show how holiday lights brighten the night across the globe

Satellite images show that US cities emit more light during Christmas and New Year's,...

The Amazon is burning at a rate not seen since we started keeping track. The smoke is reaching cities 3,000 kilometres away.

The Brazilian Amazon has experienced more than 74,000 fires this year, whereas last...

A NASA satellite caught yesterday's solar eclipse and a Category 4 hurricane at the same time — here's the video

A total solar eclipse and a hurricane can be seen near each other in this footage from a...

Astronauts in space photographed a giant volcano erupting in the Pacific Ocean

The Raikoke volcano in the Pacific erupted after being dormant for 95 years. The ash...

21 images that show how much we've reshaped planet Earth over the last century

Humans have had an unmistakable impact on Earth — one that pops out in sharp relief in...