Extremophiles: Life in Extreme Conditions Extremophiles are the superheroes of the microbial world. These organisms find a ...

Here's when and how to watch the next full moon and February's rare planetary parade, starting with the shiny bright planet of Venus.

Save the date for #ThisIsTucson's third annual market featuring 100 vendors, food trucks, live music and more on Feb. 22 in ...

The vast valleys of Vallis Schrödinger and Vallis Planck demonstrate the incredible forces that shaped the face of the Moon.

Jeff Bezos' rocket company has given NASA a brief taste of the moon's gravity without straying too far from home.

Blue Origin's New Shepard rocket and spacecraft completed its moon-gravity mission, but the capsule appeared to have a slight ...

The city of Flagstaff has taken big steps to preserve the clarity of its night sky. Find out the best ways to experience the ...

The findings provide the strongest evidence yet that asteroids may have planted the seeds of life on Earth and that these ...

Here's our picks for 10 things to do in the valley between Monday, Feb. 3 and Sunday, Feb. 9: ...

The desert city in southern Arizona is a sanctuary for stargazers—and now it's even easier for visitors to explore.

The enchanting dunescape stretches over 43 miles (70 km) along the coast and over 30 miles (50 km) inland. Lençois translates ...