A number of new and planned radio telescopes will consist of large arrays of low-gain antennas operating at frequencies below 300 MHz. In this frequency regime, Galactic noise can be a significant or ...

Astronomers have used the Atacama Large Millimeter/submillimeter Array (ALMA) to peer into the early universe and uncover the building blocks of galaxies during their formative years. The CRISTAL ...

Using the Very Large Array (VLA), astronomers have performed radio observations of a galaxy cluster Abell 2744, nicknamed ...

Guided by fast radio bursts, astronomers at the Center for Astrophysics have mapped how ordinary matter is distributed in the ...

LOFAR detects a faint radio 'mini-halo' from 3.8 billion years ago, revealing how galaxy clusters evolved in the early ...

The 21-centimeter signal is a distinct wavelength of radiation that burst right after the Big Bang and could be key to the ...

Reconfigurable intelligent surfaces (RISs) are an emerging transmission technology for application to wireless communications. RISs can be realized in different ways, which include (i) large arrays of ...

An ancient radio signal generated a soon after the Big Bang, may be the key to understanding the Cosmic Dawn and the Epoch of ...

The Wavelength archive Published 20 June 2025, 12:45Updated 2 July 2025, 12:54 PodcastPodcastsWavelength Podcast ...

Each wavelength is measured through the McKinlay-Diffey erythema action spectrum. Elevation and clouds are also accounted for in the calculation.

The X-ray photons that the sample emits in the same forward direction as the input pulse hit a piece of instrumentation that disperses them by wavelength, much like a prism disperses visible light ...

An artist's depiction shows how brief, bright bursts of radio waves travel through the fog between galaxies, known as the intergalactic medium. Each wavelength allows astronomers to “weigh ...