NASA’s chief scientist believes the space agency is close to finding alien life in its upcoming missions to the Moon and Mars. However, the scientist warned that the world may not be ready for the results of the historic discovery.

In 2020, NASA is expected to launch a mission to Mars. A rover from the space agency is scheduled to reach the planet by 2021.

The rover, dubbed as ExoMars, is equipped with a special drill that will dig into Mars’ core to collect samples. These samples will be taken into a mobile laboratory to be analyzed.

According to Dr. Jim Green, the chief scientist for NASA, there’s a great chance that traces of alien life will be discovered within the samples. Although this discovery will certainly be a historical one, Green is worried that the world is not yet ready for the consequences that come with discovering alien life.

“It will start a whole new line of thinking,” he told The Telegraph. “I don’t think we’re prepared for the results. I’ve been worried about that because I think we’re close to finding it and making some announcements.”

Green noted that once NASA encounters traces of alien life on Mars, the agency will have to deal with a new set of questions regarding its existence. Answering these new questions will provide NASA and the entire world a new perspective about life in other planets.

“What happens next is a whole new set of scientific questions,” Green said. “Is that life like us? How are we related? Can life move from planet-to-planet or do we have a spark and just the right environment and that spark generates life – like us or do not like us – based on the chemical environment that it is in?”

Aside from traces of alien life, Green also believes that entire civilizations exist on other planets. The scientist believes these can be found in exoplanets or those that are located outside the Solar System.

“There is no reason to think that there isn’t civilizations elsewhere, because we are finding exoplanets all over the place,” Green said.

Mars
Europe's Mars Express Orbiter captures a dust storm raging at the edge of Mars' north polar ice cap on May 29, 2019. ESA/GCP/UPV/EHU Bilbao