Finally, the Earth moves a little bit beyond one complete revolution, so the stick again points towards the sun for a second local noon. The sidereal day is just a little bit shorter—approximately 23 ...

Lightning happens all the time, but certain parts of the world get far less of it than others, including near the North Pole. Lightning requires atmospheric instability, something that’s set up ...

Most people have never seen the Little Dipper, because most of its stars are too dim to be seen through light-polluted skies.

At APL, a team is developing portable tech to detect ocean species using eDNA. Their goal: real-time, low-cost monitoring to ...

More than 200 people across a half-dozen southern states have reported witnessing a mysterious object streak across the sky.

Discover why Antarctica no longer has lush forests with giant ferns and how ancient fires fueled intense volcanic activity.

Here is everything to know about the northern lights this week, including whether they will be visible in Arizona. The northern lights will actually be visible in 15 states tonight: Alaska. Washington ...

Imagine a world where burly Norse warriors discover a new continent—and then just... walk away. Wild, right? Get ready for a ...

The Buck Moon rises on July 10. The full moon of July, also called the Buck Moon, will rise on July 10.

Hurricane forecasters rely on weather data collected and processed by Department of Defense satellites. That data will no ...

If your dream is to explore the world, you might instinctively look into airfare or the most scenic road trips as your ...

It was true. We had been flying over Greenland (total population: 57,000) for approximately 25 minutes and had not seen a ...