您现在的位置是:Space junk is falling from the sky. We are still not doing enough to stop it >>正文
Space junk is falling from the sky. We are still not doing enough to stop it
后花园论坛社区|2024夜上海论坛网|爱上海419论坛 -- Back garden88449人已围观
简介Debris thought to be from a spacecraft launched from French Guiana was found by residents of Salino...
Debris thought to be from a spacecraft launched from French Guiana was found by residents of Salinopolis, Brazil, on April 28, 2014. The piece of space wreckage bears the logo of the UK Space Agency and Arianespace, the European satellite launch company.
Image: TARSO SARRAF/AFP via Getty ImagesEvery once in a while, a piece of space junk hurtles through the atmosphere and crashes into Earth. Just last month, a 23-ton chunk of space debris fell – safely, thankfully – into the south-central Pacific Ocean. The debris came from the October 31 launch of China's Long March 5B rocket, which has been notorious for its uncontrolled returns to Earth.
How the New Space Race Will Drive Innovation
Some of humanity's greatest innovations have emerged from space exploration. With a new space race led by the next generation of private companies, here's how they're pushing the boundaries again.
Read nowYou might not have heard very much about these crashes, but there's a good chance you will in the future. As the space economy takes off, our low-Earth orbit (LEO) highways are getting crowded. That raises the likelihood of collisions – and of crash landings on Earth.
"Even though all of outer space might be infinite, where we put satellites are very specific regions," astrodynamicist Moriba Jah tells ZDNET. "They're becoming more congested."
Also: NASA says space junk is one of the great challenges of our time. Here's why
Jah is the chief scientist for Privateer, a recently launched company backed by Apple co-founder Steve Wozniak. Privateer's mission is to bring more visibility to our space superhighways, where satellites zoom past one another at 17,000 miles per hour. The company wants to bring that visibility with proprietary knowledge graph technology, which allows it to create visualizations of all the satellites and debris in space. With its data engine, Privateer has created Wayfinder, an open-access tool that lets others in the space economy create the visualizations they need to occupy low-Earth orbit safely.
But Jah and others argue that the five-year rule doesn't go far enough. For one thing, international regulators need to make sure there are consequences for those who don't follow the rules. Dickinson noted that there are already satellites that have been floating in space for more than 25 years after being decommissioned – exceeding the current guidelines.
Space
- What is Artemis? Everything you need to know about NASA's new moon mission
- NASA has solved the mystery of Voyager 1's strange data transmissions
- NASA's new tiny, high-powered laser could find water on the Moon
- NASA is blazing an inspirational trail. We need to make sure everyone can follow it
Space junk should be dealt with as quickly as possible, and there should be some form of accountability if it doesn't happen, Dickinson said.
"If an operator says I'm going to do 'X,' and it doesn't happen, there's no real penalties at the moment," he explained. "If someone launches 1,000 spacecraft into LEO and they decommission 90% successfully but leave 10% behind, there's no real rules about what the penalty is."
Furthermore, Dickinson added, regulators need to tackle the tough question of what to do if a satellite company goes bankrupt.
"If you don't decommission... but you're adding more up there the whole time, all of these constellations, the amount of space fills up," he said. "And more, those end-of-life satellites are left as bits of junk. And because they're passive, they can't avoid a collision."
Meanwhile, satellite operators that have to get rid of their space junk often dispose of it through 'uncontrolled atmospheric re-entry' – in other words, letting it burn up in the sky as it falls back to Earth. Yet as the recent crash of China's Long March 5B rocket demonstrated, the larger a spacecraft is, the less likely it is to completely burn up. The spacecraft that do burn up in the atmosphere are leaving behind chemicals that could damage the Earth's ozone layer, researchers say.
Show CommentsTags:
转载:欢迎各位朋友分享到网络,但转载请说明文章出处“后花园论坛社区|2024夜上海论坛网|爱上海419论坛 -- Back garden”。http://dzbz.com.cn/news/3973.html
相关文章
Your next job interview could be with AI instead of a person
Space junk is falling from the sky. We are still not doing enough to stop itgremlin via Getty ImagesIt may sound like a strange Turing test -- wondering if the recruiter you're...
阅读更多
Google's new tool can detect AI
Space junk is falling from the sky. We are still not doing enough to stop itThe tool can detect AI-generated images even after editing, changing colors, or adding filters.Googl...
阅读更多
Generative AI can't find its own errors. Do we need better prompts?
Space junk is falling from the sky. We are still not doing enough to stop itMR.Cole_Photographer/Getty ImagesThe field of deep learning artificial intelligence, especially the...
阅读更多
热门文章
- Microsoft adds more Teams, Viva features for frontline workers
- OpenAI's loss is Microsoft's gain: How the AI race just changed
- Atlassian launches Compass to help developers keep track of software tools
- Google's AI search won't be ad
- OpenShift 4.10: Red Hat teams with Nvidia to add AI and machine learning
- Bing Image Creator vs DALL
最新文章
Why Nvidia is teaching robots to twirl pens and how generative AI is helping
iPhone 15 Pro users can replace Siri with ChatGPT. Here's how
My two favorite ChatGPT Plus plugins and the remarkable things I can do with them
How to use AI to create a logo for free
35% of college students are using AI tools to help them with their studies
Later, Discord! Midjourney AI tool is moving to dedicated website