
一 | 1月15日,网友发文称,有招聘平台发布“小红书英文内容审核”岗位,工作内容为平台英文内容审核,需要大学英语六级425分以上。 Washington, Oct 12 (UNI) American space agency NASA says its recent attempt to deflect the path of an asteroid was successful, after its Dart probe struck an asteroid head-on.
Scientists have now confirmed the orbit of a 160m-wide space rock known as Dimorphos was altered when the Dart probe struck it head on last month.
Researchers came to the conclusion after making measurements using a range of space and Earth-based telescopes.
The mission was conceived to test a potential strategy to defend the Earth against threatening objects.
Dart's achievement proves such an idea would work, provided it was initiated early enough and the target wasn't overly massive.
"This mission shows that Nasa is trying to be ready for whatever the Universe throws at us," said agency administrator Bill Nelson.
"I believe that Nasa has proven that we are serious as a defender of the planet," he told reporters.
The space agency released a raft of data on Tuesday to support its assessment, including new pictures from the Hubble Space Telescope and from a small Italian spacecraft that stood off from the impact by about 50km (30 miles).
The Double Asteroid Redirection Test (Dart) took place some 11 million km (7 million miles) from Earth.
It saw the refrigerator-sized Nasa satellite drive straight into Dimorphos at 22,000km/h (14,000mph), destroying itself in the process.
The space rock orbits a much larger (780m wide; 2,550ft) object called Didymos. Before impact, the time taken for Dimorphos to make one circuit of its sibling was 11 hours and 55 minutes.
The telescope evidence now indicates this orbital period has been reduced to 11 hours and 23 minutes - a change of 32 minutes. This corresponds to Dimorphos moving closer into to Didymos by "tens of metres".
Nasa had defined a minimum successful period change of Dimorphos of 73 seconds or more. The results released on Tuesday show Dart surpassed this benchmark by more than 25 times.
"This is a 4 percent change in the orbital period of Dimorphos around Didymos. Dart just gave it a small nudge. But if you wanted to do this in the future, you'd want to do it years in advance," commented Nancy Chabot from the Johns Hopkins University Applied Physics Laboratory, which led the mission for Nasa.
"Warning time is really key here in order to enable this sort of asteroid deflection to be used in the future as part of a much larger planetary defence strategy."
Nasa's Dart programme scientist, Tom Statler, also had a word of caution about drawing too many conclusions from the experiment.
Asteroids came in many different guises, he said. Their compositions and constructions were diverse - something that was being emphasised every time a mission visited a new object.
"We should not be too eager to say one test on one asteroid tells us exactly how every other asteroid would behave in a similar situation," he stressed.
"But what we can do is use this test as an anchor point for our physics calculations in our simulations that tell us how different kinds of impacts in different situations should behave."
Four years from now, the European Space Agency (Esa) will have three spacecraft - collectively known as the Hera mission - at Didymos and Dimorphos to make follow-up studies.
UNI ING。

二 | 另有“小红书创新业务运营实习生(英文)”岗位,工作内容位是参与小红书创新项目的线上活动运营工作,包括文案撰写、用户沟通、每日后台内容审核等,要求英语能作为工作语言,大学英语六级550分/专四良好/雅思6.5分/托福95分及以上。视频加载中...值得注意的是,与众多海外社交应用相比,小红书在语言支持方面略显局限,尚未内置翻译功能,外国用户主要依赖英文交流或借助第三方翻译软件进行沟通。

三 | 相比之下,抖音(国内版)与TikTok(国际版)在内容管理上采取了分区策略,并对注册手机号的地理位置进行了限制。而小红书则显得更为开放,其平台内容尚未进行明确分区,且海外用户的注册流程相对简便。面对突如其来的用户增长,小红书内部团队自1月13日起便启动了紧急加班模式,致力于针对外国用户群体进行功能优化,以期更好地承接并利用这一波流量红利。与此同时,小红书的合规与安全团队也同步加大工作力度,确保平台运营的规范与安全。

四 | 此前媒体报道,由于美国用户对TikTok禁令的担忧日益扩大,国内社交媒体应用RedNote(小红书国际版)迅速在美国网络中走红,一举登顶苹果应用商店下载榜。(齐鲁晚报·齐鲁壹点客户端编辑 武秀英 综合凤凰网财经、正在新闻、快科技)。

五 |
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