Imagine a layer of the ocean so teeming with life that, when first discovered, scientists mistook it for the seafloor. This ...

Abstract: Doppler scattering simulations from sea-like surfaces are sensitive to nonlinear hydrodynamic effects in wave propagation. Two commonly considered approaches to introduce such nonlinearities ...

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from the galaxy at this important ultraviolet wavelength, providing a new look at ...

Astronomers have described the first measurements of plasma layers within an interstellar shock wave that surrounds a pulsar.

With the most powerful radio telescope in the southern hemisphere, we have observed a twinkling star and discovered an ...

The ultimate purpose of PUNCH is to use its four instruments — three wide-field imagers (WFI) and a near-field imager (NFI) — ...

Concentrating light in a volume as small as the wavelength itself is a challenge that is crucial for numerous applications.

A photonic activation function has important advantages for the implementation of optical neural networks based on light propagation. Researchers have now experimentally shown an all-optically ...