The "harsh conditions" of this particular environment features a diverse wildlife that lets ... showing us the many looks of our wonderful planet, its 2022 version was pretty sad.

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there ...

Credit: NASA/USGS Landsat 7; NASA Earth Observatory The Landsat 7 satellite isn’t the only craft capturing beautiful images of our planet from above. Other satellites and crew members on the ...

One set of dots had matching colors and brightness. open image in gallery Is there a possible ninth planet in our solar system? Researchers say they may have found a candidate (Credit: ESO/Tom ...

The authors argue that while the requirement to orbit our sun is too specific, other criteria in the IAU definition are too vague. For example, it says a planet has "cleared its orbit" without ...

An international team from Taiwan, Japan, and Australia used 40 years' worth of data from two space probes to track down what they believe are signs of this distant planet moving around our sun.