Radio

A new study suggests that if any alien civilizations are turning their radio telescopes toward Earth, they may be able to not only detect our mobile phone signals, but could deduce a lot about our planet and even produce crude maps of it.

Over the last 15 years astronomers have detected hundreds of unexplained radio signals from space – fast radio bursts (FRBs). Now a fresh look at radio telescope data has doubled the number of known sources, bringing us closer to solving the mystery.

The search for extraterrestrial civilizations gets a major boost as SETI joins forces with the Very Large Array (VLA) that combines the giant radio telescope with a new processing system to increase the search's effectiveness by a factor of 1,000.

In 2019 we got the first-ever direct image of a black hole, which resembled a fuzzy, orange donut. Now the team has refined the iconic image with the help of machine learning to produce the highest resolution image possible with the original data.

Astronomers have reclassified a radio galaxy in the sky after it was found to have redirected a jet of radiation straight towards Earth. This marks the first observation of a reorientation so dramatic that it changes the category a galaxy fits into.

If you could zoom way out to look at the universe at its largest scale, you’d see that it’s made up of a colossal cosmic web. Now, astronomers have detected shockwaves moving through this web, providing new insights into large-scale magnetic fields.

The chances are incredibly small that Earth is the only planet with life. A new AI system has scoured millions of radio signals from space to identify any with potential artificial origins – and discovered eight signals that look intriguingly alien.

Models of the universe predict that supernova remnants should be far more common than they are. Now, a new image from sensitive radio telescopes reveal that the missing remnants are hiding in plain sight.

The intriguing cosmic mystery of fast radio bursts (FRBs) has now shed light (pun intended) on another mystery. By studying the signature of an FRB from a nearby galaxy, astronomers have found that the Milky Way has far less matter than expected.

A highly sensitive, next-generation radio observatory has started to come to life, with construction now officially underway on the Square Kilometre Array (SKA), a dual-site science facility located in Australia and South Africa.

A new instrument integrated into the Southern Hemisphere’s largest radio telescope has given it the capabilities to detect technosignatures of extraterrestrial intelligence, significantly widening the net for scientists in search of alien life.

GPS has its limitations in urban areas where signals can get noisy. Now, engineers in the Netherlands have developed “SuperGPS” – a hybrid positioning system that combines wireless and optical connections to pinpoint locations within centimeters.