Two exoplanets near Earth may have once harbored life

Astronomer and professor at Cardiff University, - Jane Greaves has identified two new exoplanets orbiting their host star between 70 and 110 light years from Earth, they are named HD 76932 and HD 201891.

Jane Greaves argues that these two exoplanets coexist in the Milky Way galaxy, they are rich in thorium and potassium so they will have many similarities with Earth, so HD 76932 and HD 201891 have certain conditions for a civilization to thrive.

It has long been assumed that if aliens live in space, they would be less advanced than humans on Earth, and would also be more likely to be closer to bacteria than mammals, but Jane Greaves doesn't believe so.

According to , if these two exoplanets were where aliens lived 5 billion years ago before life began on Earth, this means aliens must have evolved before humans. They also have the ability to wipe out humans on Earth if they wanted to.

Sharing this view, according to some other experts, there may be alien civilizations much more advanced than ours, but the mystery is why they have not yet openly visited Earth.

Jane Greaves wants astronomers to study these two exoplanets in depth as soon as possible.

Not only Jane Greaves, NASA scientist Dr. Michelle Thaller has proposed a theory suggesting the existence of aliens on Venus.

Venus has a scorching temperature of up to 475°C, surrounded by a thick acidic atmosphere. But according to Dr. Thaller, aliens could very well be hiding on Venus, living in conditions that humans on Earth could not endure.

Venus is often called Earth's twin, because of its similar structure and size. However, the biosphere and climate conditions of both are completely opposite, no one can survive on Venus.

Professor Dominic Papineau, who works as an astrobiologist at University College London, said Dr Thaller's views were unconvincing, as it was difficult to find evidence to prove the reality.