Deep in the Chilean Desert, astronomers witness a skyscape like few others on Earth. Credit: ESO/Luis Calçada/Herbert Zodet When you wish upon a star, Jiminy Cricket told us, your dreams come true. But according to an idea doing the rounds on social media, that may not be the case: According to astronomy, when you wish …

On Thursday 27 March, the European Space Agency (ESA) sent its last messages to the Gaia Spacecraft. They told Gaia to shut down its communication systems and central computer and said goodbye to this amazing space telescope. Gaia has been the most successful ESA space mission ever, so why did they turn Gaia off? What …