Who are the two economists?
The 46-year-old is professor of economics and director, Centre for Equitable Growth, at the University of California, Berkeley. Jointly with Thomas Piketty, he has constructed long-run historical series of income inequality in the US. He received his PhD in Economics from MIT in 1999
The 32-year-old is also a professor of economics at the University of California, Berkeley. He did his PhD from the Paris School of Economics in 2013. He has worked on tax havens The
first moons of a planet other than Earth were discovered by Galileo in 1610, when he sighted what are now called the Galilean moons of Jupiter, the planet now unseated by Saturn as the largest holder of moons in solar system. Since then, scientists have discovered hundreds of moons in the solar system with many more perhaps waiting to be found
The giants Jupiter, Saturn, Uranus and Neptune, each with dozens of moons, were able to capture smaller objects with their large gravitational fields as they grew in the early period of the solar system