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Earth
Mar 5, 2002

have been cresting a few inches higher. Maybe only frequent beach-walkers would notice the difference, but the changes are real. These countries have just been hit by a...

Earth
Dec 11, 2000

behavior of this year's hole -- both the record size and the quick disappearance -- can be largely attributed to the influence of an atmospheric phenomenon known as "...

Sun
Oct 8, 2021

the impacts of a dynamic space environment on critical infrastructures and capabilities such as satellites, the power grid, GNSS services, and radio communications. His...

May 19, 2018

celestial conjunction of the two brightest beacons in the night sky could be enjoyed around the world. Seaside, light reflected by briefly horizontal surfaces of the gentle...

Oct 13, 2018

Kona, a young boxer, is a dog who loves splashing in the waves along Solana Beach near San Diego, planet Earth. But he paused here, at least briefly, during an early evening...

Jul 9, 2020

These silvery blue waves washing over a tree-lined horizon in the eastern French Alps are noctilucent clouds. From high in planet Earth's mesosphere, they reflect sunlight...

May 23, 2000

instantaneous bandwidth of an L-burst is very large, often greater than 5 MHz. L-bursts have a slow undulating quality that reminds many listeners of waves crashing on a...

Nov 20, 2022

atmospheric gravity waves, waves of alternating air pressure that can grow with height as the air thins, in this case about 90-kilometers up. Unlike auroras powered by...

Universe
Jul 29, 2019

2015, LISA Pathfinder demonstrated most of the key technologies necessary for detecting and measuring gravitational waves, including both cold gas (an ESA-led technology) and...

Universe
Nov 20, 2002

will unleash intense radiation and gravitational waves ... and leave behind an even larger black hole than before.   NASA's Chandra X-ray Observatory spotted the two...

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