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...c. 300 BC onwards, a zero symbol is found to mark empty places within numerals; but not at the end of a numeral, so the absolute value of the whole is still left ‘floating’. Question 2 Try to transcribe the Larsa tablet. Can you suggest what the cuneiform words (columns two and four) might mean? (Hint: You may find that it helps to form some initial hypothesis about...

...C (-6 °C to +18 °C), whereas in Bergen it is ~12 °C (~0 °C to +12 °C). It is only from May to the end of September that Halifax is warmer than Bergen. This arises because a vast quantity of heat is being supplied by the ocean. You can see this heat in Figure 1 because the colours representing equal sea surface temperature are not along lines of ......

...C for every kilometre of altitude gained, so by the top of the troposphere the temperature can fall well below -80°C and the pressure and density are only a tenth of those at the surface. These conditions require a pressurised and heated cabin or a space suit. The atmosphere above the troposphere is called the stratosphere and appears a clear, blue colour in the image....

...c) A composite view of the AGB star L2 Puppis in visible light (blue) and radio (orange) revealing a giant planet shaping the outflow from the star. (d) ALMA radio observations reveal a spiral structure in the material around the AGB star R Sculptoris. The majority of planetary nebulae are asymmetric, with a small fraction being largely spherical or elliptical. Most are...