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Sci-Five | The Hindu Science Quiz: On Astronomical Instruments 1 / 5 | What is an armillary sphere? A model of objects in the sky, representing lines of celestial longitude and latitude An ancient astronomical instrument used for navigation A type of instrument used to observe planets A device for measuring atmospheric pressure An armillary…
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The crescent Earth rises above the lunar horizon in this undated NASA handout photograph taken from the Apollo 17 spacecraft in lunar orbit during the final lunar landing mission in the Apollo program in 1972. | Photo Credit: Reuters During the Apollo 17 mission in 1972 – the last time people walked on the moon…
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In May 2020, some unusual rocks containing distinctive greenish crystals were found in the Erg Chech sand sea, a dune-filled region of the Sahara Desert in southern Algeria. On close inspection, the rocks turned out to be from outer space: lumps of rubble billions of years old, left over from the dawn of the Solar System….
