Looking for alien life forms, Michael Hippke, a German astrophysicist, came up with a surprising theory, indicating that extraterrestrials may not be capable of leaving their homeworld due to the planet’s strong gravitational force. His hypothesis, however, refers to big exoplanets also called Super-Earth.
Super-Earth exoplanets have a good potential for housing alien life forms
These exoplanets are very solid planets with a considerably bigger mass than the one of the Earth, and that could mean a denser and thicker atmosphere which would be able to hold and sustain life.
“On massive planets, space flight would be exponentially more expensive,” Michael Hippke said.
In his new research, Michael Hippke measured the possible acceleration an alien ship would have to reach in order to overcome the great gravitational force of a Super-Earth planet or another world with even a larger mass.
If they would use a normal rocket, propelled with fuel, Hippke’s measurements indicate that it will be impossible for extraterrestrials to leave their planet of origin. Michael Hippke also said that for the aliens to launch a mission similar to our Apollo one, the ET’s spacecraft would burn more than 400,000 tons of combustible, which would be approximately equal to the Great Pyramid’s volume.
Extraterrestrials might have developed different propulsion methods
Due to the issues presented above, Michael Hippke measured that deploying rockets powered by fuel would be, therefore, possible but totally inefficient in terms of costs and resources.
On the other hand, if a successful launch would happen, classic combustible wouldn’t help aliens reach too far, as it is the case with humans, also.
Since we’re talking about extraterrestrials living since the beginning of their history on a very massive Super-Earth with a strong gravitational force, could be possible that they’ve already developed a different method of propulsion. However, until will be proven otherwise, Michael Hippke’s hypothesis remains one good explanation of the reason why humans have not encountered extraterrestrials so far.