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Radio signals from distant stars suggest hidden planets: Study

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4 years ago

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Radio signals from distant stars suggest hidden planets: Study

Dr. Benjamin Pope of the University of Queensland and colleagues at ASTRON, the Dutch National Astronomical Observatory, have been using the world’s most powerful radio telescope low-frequency array (LOFAR) in the Netherlands to find planets. “We have found signals from 19 distant red dwarfs, four of which can best be explained by the existence of planets orbiting them,” said Dr. Pope. “We have known for a long time that the planets of our solar system emit powerful radio waves when their magnetic fields interact with the solar wind, but have not yet received radio signals from planets outside the solar system.

“This discovery is an important step in radio astronomy and may lead to the discovery of planets throughout the Milky Way.” In the past, astronomers could only detect the nearest star in a steady radio transmission, and everything else in the radio sky was interstellar gas, or strange gas such as black holes. Now, radio astronomers can see ordinary old stars when making observations. With this information, we can search for any planets around these stars. The team focused on red dwarfs, which are much smaller than the sun and are known to have strong magnetic activity that can drive stellar flares and radio emissions.

But some ancient, magnetically inactive stars have also appeared, challenging traditional understanding. Dr. Joseph Callingham of Leiden University and ASTRON and the lead author of the discovery said that the team believes that these signals come from magnetic connections between stars and invisible orbiting planets, similar to the interaction between Jupiter and its moon Io. “Our own earth has aurora, which is usually considered to be the northern lights and southern aurora, and they also emit powerful radio waves-this is from the interaction of the earth’s magnetic field and the solar wind,” he said.

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“But as far as Jupiter’s aurora is concerned, they are much stronger because its volcanic moon Io is ejecting matter into space, filling Jupiter’s environment with particles, driving the extremely powerful aurora. “Our stellar radio emission model is an enlarged version of Jupiter and Io.

A planet is surrounded by the star’s magnetic field, transporting matter into a huge current, and also powering the bright aurora. “This is a spectacle that has attracted our attention from a light-year away.” The research team now wants to confirm that the proposed planet actually exists. “We can’t be 100% sure that the four stars that we think possess planets are indeed planetary hosts, but we can say that planet-star interactions are the best explanation we have seen,” said Dr. Pope. “Subsequent observations ruled out planets that are more massive than the Earth, but there is nothing to say that smaller planets would not do this.

” The discovery of LOFAR is just the beginning, but the telescope can only monitor stars that are closer, up to 165 light-years away.

News Source : Science Daily

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YouTube marks 20th anniversary by launching new useful features What’s new

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1 week ago

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April 24, 2025

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YouTube marks 20th anniversary by launching new useful features What’s new

YouTube has celebrated its 20th anniversary with several new features, including functional upgrades and new features for YouTube TV. The platform has introduced personalised radio stations via Ask Music, which is available to YouTube Premium and YouTube Music users on both iOS and Android devices. Additionally, YouTube is rolling out the ability to fast-forward.

YouTube TV members will gain the ability to build their own multiview experiences, starting with a selection of non-sports content from a small group of popular channels. The platform is introducing improved navigation, better playback quality, and easier access to features such as comments, channel information, and more through videos at 4x speed, providing more.

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  1. Delete Unnecessary Emails: Regularly clearing unwanted emails helps maintain storage. Open Gmail in your browser or mobile device, go to your Inbox, Social, or Spam folder, filter messages, select emails to delete or check the box to select all emails in the folder, and click the “Delete” button. The emails will be moved to the Trash folder Empty Your Spam and Trash Folders: If deleted emails remain in your Trash.
  2. Unsubscribe from Unwanted Emails: Open a promotional email and click “Unsubscribe” at the bottom of the email to reduce future accumulation April 2025 — YouTube, the world’s largest video-sharing platform, is celebrating its 20th anniversary with the launch of several innovative features aimed at enhancing user experience, empowering creators, and embracing the future of digital content.

  3. 1. AI-Powered Video Summaries
    One of the most anticipated features is AI-generated video summaries, which will now appear below eligible videos. This allows viewers to preview content quickly and decide whether to watch the full video. The summaries are automatically created using advanced natural language processing and are designed to boost discoverability and engagement.

  4. 2. “Jump Ahead” Smart Chapters
    YouTube is introducing smart chapters with “Jump Ahead” capabilities, allowing viewers to skip to the most engaging parts of videos based on audience retention data. The feature leverages machine learning to identify sections that retain viewers the most and gives users a prompt to “Jump Ahead” with a single tap.

  5. 3. Creator Insights Dashboard Upgrade
    For content creators, YouTube has upgraded its Creator Studio Dashboard with enhanced real-time analytics, audience mood tracking, and AI-suggested titles and tags. The platform’s algorithms now offer dynamic suggestions for improving performance, personalized for each creator’s channel and content style.

  6. 4. YouTube Create App Expansion
    Following positive feedback from beta users, YouTube is officially rolling out the YouTube Create app in over 30 new countries. This free mobile video editing tool includes features like auto-captions, royalty-free music, filters, and multi-clip editing — giving creators more control without the need for expensive software.

  7. 5. Enhanced Live Shopping Tools
    With e-commerce booming, YouTube is expanding its Live Shopping tools, allowing creators to tag mini-social network within the platform. These tools are products, integrate affiliate links, and host shoppable livestreams with real-time viewer interaction. The new update supports multi-vendor support, making collaborations with brands smoother and more profitable.

  8. 6. Smart TV Upgrades
    YouTube is giving its TV interface a refresh, introducing a sleeker design with quicker access to playlists, subscriptions, and smart recommendations. A new “Ambient Mode interactive content suggestions and previews when the app is idle, turning the TV into a dynamic home hub for entertainment.

  9. 7. Community Tab Enhancements
    To improve engagement, YouTube is enhancing its Community Tab with interactive stickers, polls, countdowns, and quizzes — turning it into a mini-social network within the platform. These tools are aimed at helping creators keep their audience involved even between video uploads.
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  2. General News Platforms – IHTLive.com
  3. Entertainment News Platforms – https://anyflix.in/

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