Articles on Radio astronomy

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The planetary radar, built in 1960 in Crimea, from which the Morse signal ‘MIR, Lenin, USSR’ was sent in November 1962. National Radio Astronomy Observatory Archive

SETI’s ‘Noah’s Ark’ – a space historian explores how the advent of radio astronomy led to the USSR’s search for extraterrestrial life

Radio astronomy opened up the universe for scientists. They could map new elements across galaxies and also search for signals from extraterrestrial civilizations.
One of the galaxies mapped by WALLABY: the red shade shows the atomic hydrogen gas content of the galaxy, overlaid on an optical image showing the stars. Much of it is typically found beyond the stellar disk (thin white line), where star formation takes place. Legacy Surveys / D. Lang (Perimeter Institute) / T. Westmeier

For making stars, it’s not just how much gas a galaxy has that matters – it’s where it’s hiding

A new, more detailed study of 1,000 distant galaxies explains why some gas-rich galaxies don’t produce as many stars as you’d expect.

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