What are Moon phases?According to NASA, the Moon takes about 29.5 days to orbit the Earth. Over the course of this period, it moves through eight recognisable phases, what we call the lunar cycle. While the same side of the Moon always faces us, the amount of its surface lit by the Sun changes as it continues along its path. The shifts in sunlight create the different appearances we see from Earth, ranging from a fully illuminated Moon to a thin sliver or near darkness. The eight phases are:
Public health consultant Dr Ross Keat said supporting people earlier to make small preventative changes would make "a big difference later on".
。业内人士推荐谷歌浏览器【最新下载地址】作为进阶阅读
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people aged 70 to 79 who have not yet been vaccinated