<\/p>
A black hole<\/a> is defined by its \u2018event horizon\u2019, the imaginary membrane that marks the point of no return for in-falling light and matter. If the Sun<\/a> were to become a black hole \u2013 which is impossible since it is not massive enough \u2013 the event horizon would only be\u00a0six\u00a0kilometres across.<\/p>\n The biggest supermassive black holes<\/a> are tens of billions of times more massive than the Sun and are in the hearts of all galaxies,\u00a0though nobody knows why. These supermassive black holes\u00a0have event horizons bigger than the Solar System.<\/p>\n If you crossed the event horizon and entered a black hole, space-time would be so distorted that time would become space, and space would become time. This is why you cannot avoid the monstrous infinite-density \u2018singularity\u2019 that lurks like a black widow spider at the heart of a black hole: it no longer exists across space but across time. It exists in the future, and you can no more avoid it than you can avoid tomorrow.<\/p>\n As for what exists on the other side of the singularity, some have speculated that this is a gateway to far-flung parts of our Universe or even other universes. The truth is that a singularity in a theory marks the breakdown of that theory,\u00a0and the point at which it has nothing more sensible to say.<\/p>\n In order to truly understand what happens at the heart of a black hole and whether \u2018What\u2019s on the other side?\u2019 is a meaningful question, we will need a better theory of gravity than Einstein\u2019s \u2013 a \u2018quantum\u2019 theory of gravity<\/a>. Finding one\u00a0of these\u00a0is one of the supreme challenges of science!<\/p>\n Read more:<\/strong><\/p>\n Asked by: Karen Scott-Martinet, New Hampshire<\/strong><\/p>\n To submit your questions email us at questions@sciencefocus.com (don\u2019t forget to include your name and location)<\/em><\/p><\/body><\/html>\n By Marcus Chown Published: Thursday, 25 August 2022 at 12:00 am A black hole is defined by its \u2018event horizon\u2019, the imaginary membrane that marks the point of no return for in-falling light and matter. If the Sun were to become a black hole \u2013 which is impossible since it is not massive enough \u2013 […]<\/p>\n","protected":false},"author":24,"featured_media":17021,"template":"","categories":[30],"acf":{"readingTimeMinutes":"2"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/08\/what-is-on-the-other-side-of-a-black-hole.jpg",1200,511,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/08\/what-is-on-the-other-side-of-a-black-hole-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/08\/what-is-on-the-other-side-of-a-black-hole-300x128.jpg",300,128,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/08\/what-is-on-the-other-side-of-a-black-hole-768x327.jpg",768,327,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/08\/what-is-on-the-other-side-of-a-black-hole-1024x436.jpg",800,341,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/08\/what-is-on-the-other-side-of-a-black-hole.jpg",1200,511,false],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/08\/what-is-on-the-other-side-of-a-black-hole.jpg",1200,511,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"By Marcus Chown Published: Thursday, 25 August 2022 at 12:00 am A black hole is defined by its \u2018event horizon\u2019, the imaginary membrane that marks the point of no return for in-falling light and matter. If the Sun were to become a black hole \u2013 which is impossible since it is not massive enough \u2013…","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/rss_feed\/17020"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/media\/17021"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/media?parent=17020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/categories?post=17020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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