China unveils refined lunar map, empowering future moon exploration_我的网站

A |     A Chinese research team has completed an updated geologic map of the entire moon featuring a scale of 1:5 million, the Institute of Geology, Chinese Academy of Geological Sciences (IGCAGS), said on Thursday.    Representing a significant scientific iteration from the 2024 version, this map effectively rewrites the moon's geologic history based on the latest research findings. "The lunar geologic history has indeed been rewritten -- more precisely, refined and systematized," said Yang Zhiming, director of the IGCAGS.    Specifically, a primary achievement of this update is the recalibration of the moon's ancient geologic eras. The new map systematically updates the age boundaries of the moon's three ancient geologic periods, namely the Aitkenian, Nectarian and Imbrian periods, drawing on recent advances in international chronology.    Crucially, Chang'e-5 samples confirmed volcanic activity on the moon as recently as 2 billion years ago, extending its geologic lifespan by 1 billion years from the previously accepted 3 billion years. This independent dating data has now become a cornerstone of the global lunar geologic timescale.    Highlighting these spatial discoveries, the new global lunar geologic map is the first comprehensive canvas to bear exclusive findings from the Chang'e-6 mission. "The lunar samples and this map will provide a new starting point for scientific discussions regarding the lunar far side," said Jin Ming, an associate researcher at the IGCAGS.    The map details the age of young mare basalts on the lunar far side obtained from the Chang'e-6 samples, recording the region's volcanic history. Furthermore, it reveals that KREEP rocks, enriched with rare earth elements and other strategic resources, are far more continuous and abundant in the Oceanus Procellarum than previously estimated. This discovery, achieved by eliminating spectral noise, prompts a systemic reevaluation of the moon's early magma ocean crystallization and internal thermal evolution.    Beyond its scientific data, the 2.8-by-1.2-meter map introduces a proprietary cartographic standard. Identifying over 13,500 impact craters and 81 basins, it employs a unique color scheme rooted in geologic logic and traditional Chinese aesthetics, following a "lighter for younger, darker for older" principle.    Furthermore, this standard will also be applied to future geologic mapping of Mars and asteroids, ending reliance on foreign standard systems.    "This goes beyond showcasing technological soft power. This standard will be extended to future planetary geologic mapping, establishing an independent intellectual property framework for China's deep space exploration," Yang said.                    。    Months after missing the first primary debate stage -- which prompted a complaint with the Republican National Committee -- businessman Perry Johnson has decided to suspend his short-lived presidential campaign, he announced Friday."With no opportunity to share my vision on the debate stage, I have decided at this time, suspending my campaign is the right thing to do," Johnson said in a statement.He has not withdrawn completely and will remain on the ballot in early states like New Hampshire where he attended the NH GOP's First in the Nation Leadership Summit just days ago.Johnson is the third candidate to drop out of the presidential race, after Rep. Will Hurd and Miami Mayor Francis Suarez halted their campaigns earlier this year.Johnson took multiple swipes at the RNC amid a potential legal battle he claimed he would wage against the committee after failing to meet the polling criteria to make the first debate stage.He subsequently filed an FEC complaint against the RNC and Fox News, which hosted the first debate, accusing them of "a collusive effort to cherry-pick participants."Johnson's campaign told ABC News "he's not ruled anything out" when asked whether he would move forward with the complaints now that he has suspended his campaign."I've said it before and I'll say it again: the people should decide the next president of the United States, not the head of the RNC and her cronies," Johnson said in his statement.An author and a wealthy businessman, Johnson funded almost the entirely of his presidential campaign with his own money, loaning $12 million to his campaign and contributing more than $1.5 million worth of flights for his campaign through his private plane, his campaign disclosure reports show.。

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