William Herschel detected a strange object, which was a turning point, while Edmund Halley died before seeing the comet he predicted to return.
In late 2013, the European Space Agency launched the Gaia space observatory mission that observed more than one billion celestial objects.
Saturn is known as the most imposing planet for its magnificent rings. Its spectacular golden arrays, which reflect the sunlight, must have taken Galileo’s breath away when he first spotted them through a telescope in 1610, more than 400 years ago!