Abstract: The critical frequency of the ionospheric F2 layer (foF2), one of the essential channel parameters for high-frequency (HF) global communications via sky waves, shows significant variability ...

Scientists are closing in on a long‑standing mystery in space physics: why some auroras erupt in sudden, explosive bursts ...

Abstract: The imaging polarization sensor (IPS) can provide high-accuracy, robust, and fully autonomous navigation information for underwater unmanned platforms. However, the polarization images in ...

Miniaturization ranks as the driving force behind the semiconductor industry. The tremendous gains in computer performance since the 1950s are largely due to the fact that ever smaller structures can ...

MUNICH — "It was gnarly. Dangerous. Only the most experienced could surf it," says Jakob Netzer of what local surfers have come to call the "E1," an ever-churning wave along a mountain stream that ...

Welcome to Water Lemon. Space is filled with mysteries that continue to confuse even the smartest scientists. From powerful radio waves that flash for just milliseconds to strange repeating signals ...

Astronomers at South Africa's MeerKAT radio telescope have detected the first radio waves coming from the interstellar comet 3I/ATLAS. But while this sounds suspiciously like alien activity, it is ...

Another mysterious discovery has been observed about 3I/ATLAS. From the fascinating interstellar object in our solar system, scientists have recently detected radio signals using MeerKAT, a radio ...

We cannot see or image the entire Milky Way galaxy, because we are located inside it. From Earth, we can observe only a portion of the galaxy, and when we look up at the dark, clear night sky from a ...