Proxima Centauri b Proxima Centauri b Proxima Centauri b (also called Proxima b or Alpha Centauri Cb) is an exoplanet orbiting in the habitable zone of the red dwarf star Proxima Centauri, which is the closest star to the Sun and part of a triple star system. It is located about 4.2 light-years (1.3 parsecs, 40 trillion km, or 25 trillion miles) from Earth in the constellation of Centaurus, making it the closest known exoplanet to the Solar System. Proxima Centauri b orbits the star at a distance of roughly with an orbital period of approximately 11.2 Earth days, and has an estimated
The Three Trillion Dollar War Times" and international best-seller and has been translated into 22 languages. The total cost of $3 trillion is comparable to that found in other studies. The Joint Economic Committee of Congress estimated that the war would cost $3.5 trillion, while the non-partisan Congressional Budget Office projected that the total cost will reach between $1.4 and $2.2 trillion. The Stiglitz-Bilmes work builds on an earlier study by Yale economist William Nordhaus, who predicted in 2002 that the war could reach $2 trillion if it went badly. Numerous economists, including James K. Galbraith of the University of Texas and Nobel Laureate Lawrence