A cache of 1,500 declassified documents has revealed a wide range of symptoms from UFO experiencers.
A former intelligence officer has described the physical symptoms experienced by US Navy pilots.
Caves dotted around the surface of the Red Planet could provide a safe haven for future human explorers.
It has been confirmed that the radiation detected over Europe in 2017 came from a Russian nuclear plant.
In 1951, an encounter with a strange object near Seoul inflicted an entire company with radiation sickness.
Scientists have calculated the minimum level of radiation that an astronaut will be exposed to on a trip to Mars.
The unexplained cloud of Ruthenium-106 particles was detected over Europe in September and October.
NASA has been exploring ways to protect astronauts from deadly radiation during future missions to Mars.
An unexplained spike in radiation was picked up across a number of European countries last month.
The astronauts who walked on the moon are up to five times more likely to die of cardiovascular disease.
The findings suggest that exposure to cellphone radiation may cause brain and heart cancers in rats.
Stephen Hawking's theory of energy being emitted by a black hole may finally earn him a Nobel Prize.
30 years on, Scandinavia is still suffering from the after-effects of the world's worst nuclear disaster.
Cosmic radiation could be the single biggest problem for future astronauts embarking on a trip to Mars.
An American airman has received compensation after suffering radiation poisoning during the encounter.
Sending humans in to space is set to become more difficult due to cosmic radiation exposure.
New data from the Curiosity rover has revealed the threat posed by radiation to future astronauts.
Gigantic rats have been plaguing Iran's capital Tehran after being exposed to radiation and chemicals.
A new antenna will help researchers determine if cell phone radiation poses a health risk to humans.
Earth was hit by a mysterious blast of cosmic radiation at some point during the 8th century AD.