Abstract: In this study, a wideband miniaturized dual-polarized antenna based on a wide-arm dipole antenna through mode analysis and recombination is proposed. First, the antenna radiating arms are ...

IT之家10 月 3 日消息，Perplexity 今日宣布，旗下 AI 浏览器 Comet 现已面向全球用户免费开放下载。Perplexity 称，自今年 7 月发布以来，已有“数百万”用户加入候补名单。 在此之前，该产品曾以每月 200 美元（IT之家注：现汇率约合 1425 元人民币）的高价提供订阅 ...

CAPE CANAVERAL, Fla. (AP) — A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. SpaceX launches the 11th test flight ...

Comet is now available globally for free. It debuted in July for $200-per-month. It's part of a broader industry effort to AI-ify browsers. Perplexity announced Thursday that its AI-powered web ...

AI search startup Perplexity is making its new Comet browser available to everyone in the world for free as it works to position the product against big browsers and search engines. For certain paid ...

A new comet has been starting to become more and more visible in the night sky. According to Space.com, on Sept. 10, Vladimir Bezugly of Dnipro, Ukraine was examining online images of a low-resolution ...

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Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

CAPE CANAVERAL, Fla. – A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. The comet known as 3I/Atlas will hurtle ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky.

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...