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  2. Gamma-ray burst - Wikipedia

    en.wikipedia.org/wiki/Gamma-ray_burst

    These account for about 30% of gamma-ray bursts, but until 2005, no afterglow had been successfully detected from any short event and little was known about their origins. Since then, several dozen short gamma-ray burst afterglows have been detected and localized, several of which are associated with regions of little or no star formation, such ...

  3. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    The core is the only region of the Sun that produces an appreciable amount of thermal energy through fusion; 99% of the power is generated within 24% of the Sun's radius, and by 30% of the radius, fusion has stopped nearly entirely. The rest of the Sun is heated by this energy as it is transferred outward through many successive layers, finally ...

  4. The World's Billionaires - Wikipedia

    en.wikipedia.org/wiki/The_World's_Billionaires

    The 38th annual Forbes list of the world's billionaires found a record 2,781 billionaires with a total net wealth of $14.2 trillion. This is an increase of 141 members and $2 trillion from 2023, which held the previous record for the highest net worth gain on the list, surpassing the $900 billion record set in 2022.

  5. YouTube - Wikipedia

    en.wikipedia.org/wiki/YouTube

    YouTube is an American online video sharing platform owned by Google. Accessible worldwide, [note 1] YouTube launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim, three former employees of PayPal. Headquartered in San Bruno, California, United States, it is the second most visited website in the world, after Google Search.

  6. Portugal - Wikipedia

    en.wikipedia.org/wiki/Portugal

    According to FAO, Portugal is the top producer of cork and carob in the world, accounting for about 50% and 30% of world production, respectively. It is the third largest exporter of chestnuts and third largest European producer of pulp. Portugal is among the world's top ten largest olive oil producers and fourth largest exporter.

  7. Bayes' theorem - Wikipedia

    en.wikipedia.org/wiki/Bayes'_theorem

    A factory produces items using three machines—A, B, and C—which account for 20%, 30%, and 50% of its output respectively. Of the items produced by machine A, 5% are defective; similarly, 3% of machine B's items and 1% of machine C's are defective. If a randomly selected item is defective, what is the probability it was produced by machine C?

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