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欧空局利用航天器的"内务"数据来测量宇宙射线|太阳系|火星

据外媒报道，通过研究高能粒子撞击电路造成的计算机故障记录，
地球不断受到高能粒子的轰击，这些粒子通常被称为宇宙射线，从太阳系外部流进来。由于地球受到大气层和磁场的保护，我们在地面上不会受到它们的困扰，但是它们对太空任务，特别是那些在低地球轨道以外旅行的任务可能是一个严重的危险。
宇宙射线会破坏微电路，这意味着它们会随着时间的推移而使组件退化，因此空间机构的工程师会定期监测航天器系统的健康状况。这种一般“内务”管理的一个例子是错误检测和纠正（EDAC），它记录了由于宇宙射线影响造成的内存错误，以便对它们进行补偿。
欧空局的团队意识到，随着深空任务走得越来越远，这些日志可以作为衡量太阳系不同地区宇宙射线活动随时间变化的一种方式，起到双重作用。在这项研究中，他们� ....

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Review: How many missions to Mars have been undertaken so far?

NASA’s Perseverance Mars rover landed on the red planet recently. It was launched on 30 July 2020 under Mission Mars 2020, exploiting the closest approach phenomenon. But how many countries have launched a mission to Mars? How many of them have been successful? Here are all the details.
The geographical & other conditions in Mars are in proximity with that of Earth which has resulted in speculation that there is a possibility of life on the red planet. Mars is a little more than half the Earth’s size with a gravity of only 38% that of Earth. Roughly, the land area in Mars is equal to the area of continents on Earth. Scientists have also suggested that there must have been a vast ocean in Mars’ northern hemisphere. Some other visible features on Mars may be that of ancient flowing liquids such as river valleys, streams, deltas, and basins, according to Mars experts. ....

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PolyU-made Space Instruments Complete Lunar Sampling for Chang'e 5 – Parabolic Arc

Professor YUNG Kai-leung (right) and Dr Robert TAM have developed valuable experience from participating in several lunar exploration projects of the Nation. (Credit: Hong Kong Polytechnic University)
HONG KONG, 8 December 2020 (PolyU PR) In support of the Nation’s first lunar sample return mission, a research team at The Hong Kong Polytechnic University (PolyU) developed and manufactured one of the key systems for this historic undertaking, namely the “Surface Sampling and Packing System”, in collaboration with the China Academy of Space Technology.
The PolyU-developed system accomplished the tasks of automatic sample collection and packaging on the lunar surface following the soft landing of the Chang’e 5 probe on 1 December 2020. The vehicle carrying the samples is currently on course back to Earth, and is expected to touch down in China’s Inner Mongolia region next week. ....

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