The Nearest Planet to Earth Outside Our Solar System

There are planets outside our solar system known as exoplanets that orbit stars beyond our own sun. Proxima Centauri b is the nearest exoplanet to Earth and potential potentially habitable exoplanet, four light years away and orbiting Proxima Centauri star system. Proxima Centauri Astronomers have discovered a planet known as Proxima Centauri b that is…

How Many Planet Earths Could Fit Inside the Sun?

The Sun’s gravity holds together our Solar System, keeping planets, asteroids, meteoroids, as well as microscopic debris in orbit around it. At its core lies nuclear fusion processes which turn hydrogen into helium; all this heat makes up our star. This video from BBC Planet Earth series, hosted by David Attenborough. Volume Comparing planet sizes…