The signal, recorded in 1977, was at first suspected to be an alien transmission. Now scientists suggest the 47-year-old radio signal was the result of a rare event that caused a massive cloud of hydrogen to shine super brightly.
An international team of researchers has produced the first sharp radio maps of the universe at low frequencies. Thanks to a new calibration technique, they bypassed the disturbances of the Earth's ionosphere.
A strange radio signal pulsing from a spot 15,000 light-years away could point to an unconfirmed type of star.
Researchers from Montreal and India have captured a radio signal from the most distant galaxy so far at a specific wavelength known as the 21 cm line, this is the first time this type of radio signal has been detected at such a large distance.
Astronomers have discovered the most distant source of radio emission known to date - the quasar, nicknamed P172+18. It is so distant that light from it has travelled for about 13 billion years to reach us.
The Juno spacecraft orbiting Jupiter has discovered an FM radio signal coming from the moon Ganymede. The find is a first-time detection from the moon. The signal is of natural origin.
