The spiral galaxy M74 imaged by the NASA/ESA JWST.
ESA/Webb, NASA & CSA, J. Lee and the PHANGS-JWST Team.
Research on exoplanets over the next couple of decades could help us more accurately estimate how many intelligent alien civilisations there are in our galaxy.
JIM LO SCALZO/EPA
What kind of evidence would we really need, before we could reasonably conclude alien contact had been made?
The evidence so far isn’t very specific.
IgorZh/Shutterstock
One in a million or one in ten? Mathematics can help us work out the odds of whether recent sightings of UFOs are really alien spaceships.
Are microbes travelling around in the galaxy?
Nuttawut Uttamaharad
A new study argues we should search for microbial life rather than human-like aliens.