Even if aliens exist, are intelligent like humans and interested in making contact with us, what are the chances they’ll be close enough for us to hear them screaming their presence into the cosmos?
The evidence so far isn’t very specific.
IgorZh/Shutterstock
A minuscule particle of asteroid dust has helped reveal how celestial rocks like Earth might have sprouted life.
People who believe aliens have visited Earth are less likely to trust the 2020 election results.
Colin Anderson Productions pty ltd/DigitalVision via Getty Images
Americans who believe aliens have visited Earth are more likely than disbelievers to say that Joe Biden is not the legitimate winner of the 2020 presidential election.
Landing on Mars is extremely difficult.
NASA/JPL-Caltech
Scientists preparing to land the Rosalind Franklin rover in a few years are nervously awaiting the landing of Nasa’s Perseverance rover.
Artist’s depiction of a flare-coronal mass ejection event on Proxima Centauri.
Mark Myers, ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav)
We observed a powerful flare and a huge burst of radio waves from our nearest stellar neighbour, Proxima Centauri, indicating violent space weather around the star.
Considering what we know about the key ingredients for life’s formation on Earth, here are three explanations for how this process may have occurred on our sister planet.