...... by whom also he made the worlds... Hebrews 1:2
"Many of the exoplanets that are being discovered are giant “super-earths,” planets with a mass up to 10X Earth’s mass.
---These planets pose a problem for space travel.
As the gravity of a planet increases, so does the amount of fuel that is needed for a rocket to escape the gravity of the planet and reach space.
As Gonzalez puts it, “mass fraction [of fuel in a rocket] is an 
exponentially increasing function of delta-V relative to the exhaust velocity.”
---Thus, as the surface gravity of a planet increases, the amount of fuel needed for a rocket to be blasted into space increases at an exponential rate until so much fuel would be needed that it would be impossible for the rocket to escape a planet’s gravity.
He finds “that the maximum payload mass is reduced by about 40% for a super-earth only about 20% more massive than Earth. Beyond 1.65 Earth masses the Saturn V could not launch anything beyond the planet’s atmosphere.”
In other words, a civilization on a planet larger than about 1.65 Earth masses would find it very difficult to engage in planetary exploration as we have done going to the moon."
EN&V