A constante de Hubble

https://www.theguardian.com/science/2018/may/10/the-answer-to-life-the-universe-and-everything-might-be-73-or-67

Citando:
"A crisis of cosmic proportions is brewing: the universe is expanding 9% faster than it ought to be and scientists are not sure why.

The latest, most precise, estimate of the universe’s current rate of expansion - a value known as the Hubble constant - comes from observations by the European Space Agency’s Gaia mission, which is conducting the most detailed ever three-dimensional survey of the Milky Way."