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...world, peopled by small furry sentient creatures. A new study, published in Science Advances, reports signs of such an “exomoon” orbiting Kepler-1625b, which is a Jupiter-sized exoplanet. The planet goes around the yellow parent star every 287 days at the same distance as the Earth orbits the sun. The planet and moon are therefore likely to be in the “habitable...

...world’s biggest gold producer is South Africa, where gold mines are sunk over 3,000 metres deep into the earth. There are also large deposits of gold above the ground. So-called ‘alluvial’ gold is found as small yellow grains and flakes, or even small nuggets, on the beds of fast-flowing rivers and streams. Natural erosion, flooding, glacial movement and weathering...

...world beyond their bedrooms. Here, Fraser Robertson describes how to make your own...Find out about The Open University's Science courses and qualifications A crystal set is the most basic type of radio receiver. It is capable of receiving AM (amplitude modulated) transmissions, which are generally found on the long, medium and short wave bands. The magic of the crystal...