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
Radio astronomy opened up the universe for scientists. They could map new elements across galaxies and also search for signals from extraterrestrial civilizations.
Interstellar comet 3I/ATLAS, captured by NASA’s Hubble Space Telescope captured on July 21 2025.
NASA, ESA, David Jewitt (UCLA); Image Processing: Joseph DePasquale (STScI)
New radio astronomy results reveal how galaxies exchange gas with the intergalactic medium – the raw material for stars and the key to galactic evolution.
An artist’s impression of the Square Kilometre Array telescope in South Africa.
(SKAO)
The world’s largest space telescope, comprising thousands of antennae in the southern hemisphere, will generate massive amounts of data — some of which will be processed in Canada.
When two massive objects – like black holes or neutron stars – merge, they warp space and time.
Mark Garlick/Science Photo Library
A decade after the first discovery, scientists have used these waves to find a unique merger, a massive binary system and a crystal-clear gravitational wave signal.
The largest telescope in space has been trained on a rocky exoplanet.
White dwarf stars, like this one shown shrouded by a planetary nebula, are much smaller than stars like our Sun.
NASA/R. Ciardullo (PSU)/H. Bond (STScI)
An ‘extremely stripped supernova’ confirms the existence of a key feature of physicists’ models of how stars produce the elements that make up the Universe.
An artist’s impression of Chiron and its coma of gas.
William Gonzalez Sierra / UCF
Some observatories that used to be dark and remote are now adjacent to bright urban centers. And sending all telescopes into space isn’t a viable solution.
The Sun’s gravitational pull extends more than 160 times further into space than Neptune.
Vadim Petrakov