The predawn hours of April 28 will see a planetary triangle form in the night sky, as Venus makes a close approach to Saturn following a conjunction, while Neptune, invisible to the naked eye, will ...

In spring, the water level is high from snowmelt, making it ideal for a refreshing dip after hiking. Birdwatchers can spot ...

Arizona’s state parks are the unsung heroes of our natural landscape – less crowded than national parks but every bit as ...

NASA researchers got a rare chance to study Uranus' atmosphere and rings this month, when the ice giant passed between Earth ...