“Unbelievable Transformation: Man’s Reckless Encounter with a Particle Accelerator Defies Science!”
If aliens do exist in TRAPPIST-1’s system, it’s because the mass of the planets allows for life to exist – but measuring the mass of something 39 light years away is not easy.
Scientists looked at the length of the inner six planets orbits. They found that the length of the orbits was related by a ratio of whole numbers because of the gravitational influences they had on one another. The scientists measured these influences to find the mass of each planet. From there, they managed to calculate an estimation of their densities, which can predict how much water, gas, iron, and rock each planet contains.