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World's largest nuclear fusion reactor is finally completed. But it …
2024年7月3日 · The reactor's impressive design comes with an equally hefty price-tag. Originally slated to cost around $5 billion and fire up in 2020, it has now suffered multiple delays and its budget swelled ...
How long will Earth exist? | Live Science
2023年12月3日 · Earth's fate. But Earth likely won't last those 4.5 billion years, and it definitely won't be Earth as we know it. "You don't have to wait for the outer layers [of the sun] to reach the Earth," he ...
Have all 8 planets ever aligned? - Live Science
2024年3月17日 · If you measured the distance around the circle of the entire horizon, that would equal 360 degrees. To give an idea of the horizon's enormity, the full moon appears only half a degree across ...
Is Earth getting closer to the sun, or farther away?
2022年8月8日 · Although 0.1% may not sound like a lot, "this is a lot of mass," DiGiorgio said. "It's about the same amount of mass as Jupiter."Jupiter, in turn, is about 318 times Earth's mass, according to the ...
Artificial intelligence: What is AI? | Live Science
2024年4月14日 · This exciting field of computer science focuses on technologies that mimic human intelligence — with AI systems becoming way more prevalent in recent years.
The solar system: Facts about our cosmic neighborhood
2022年2月25日 · An image of a massive solar flare (or coronal mass ejection) erupting out of the sun in 2017. (Image credit: NASA) The sun is at the center of the solar system and is its largest object ...
Why is water important? - Live Science
2022年8月31日 · Why do we need to drink water? Knowing how to stay hydrated with water is super important. Why? Well, largely because the human body is about 60% water and because we are continuously losing water ...
History of computers: A brief timeline | Live Science
2023年12月22日 · The history of computers goes back over 200 years. At first theorized by mathematicians and entrepreneurs, during the 19th century mechanical calculating machines were designed and built to solve ...
Is Mount Everest really the tallest mountain on Earth?
2022年10月28日 · Researchers have measured Mount Everest many times over the past few decades, but the latest assessment, announced in November 2021, puts it at 29,031.69 feet (8,848.86 meters) above sea level ...