Whereas conventional geometry describes shapes on a flat plane, hyperbolic geometry is set on a curved surface—creating ... Variations of hyperbolic space can be found in nature (the wavy ...

In order for the gear teeth to fit together, and to allow space for lubricant, the valleys of the teeth ... This gear is an "enveloping" gear, which is designed to follow the curved profile of the ...

Curved Air’s 1970 debut album Air Conditioning was also the first rock band picture disc album. Singer Sonja Kristina recalls ...

Like the chef of a rival restaurant, China has been closely studying the ingredients that make up U.S. aircraft carriers—and ...

Former president Joe Biden spoke about the importance of social security in Chicago on April 15, marking his first speech since leaving the White House. Consider the astronomical and perceptual ...

The best new hotels around the world, all vetted and reviewed by Travel + Leisure's expert editors and reporters.

A United Airlines plane headed from Colorado to Edmonton, Canada, on Sunday had to return to the airport after reportedly hitting wildlife. The Boeing 737-800 returned safely to Denver to "address ...

Pop star Katy Perry and journalist Gayle King are among six women who traveled aboard Blue Origin’s all-female, suborbital space tourism mission. • The company’s New Shepard rocket lifted ...

A small plane that crashed in upstate New York killed all six people on board, authorities said, including Karenna Groff, the 2022 NCAA woman of the year, and some of her family members.

Blue Origin sending all-female crew into space April 14, including Katy Perry, Gayle King. You need to be at least 18 to fly, and there's a $150,000 deposit. The company was founded by Jeff Bezos ...

Katy Perry and five other women successfully launched into space on Monday on the first all-female mission in more than six decades. The crew lifted off on board an autonomous rocket made by Blue ...

What’s out there? We don’t know for sure, but the best space exploration games let you discover alien worlds, dodge supermassive black holes, or become an interstellar trucker. Dust off your ...