{"id":18366,"date":"2026-05-05T12:35:18","date_gmt":"2026-05-05T10:35:18","guid":{"rendered":"https:\/\/ultimabozza.it\/tonight-earth-passes-through-debris-left-behind-by-halleys-comet-how-to-see\/"},"modified":"2026-05-05T15:43:15","modified_gmt":"2026-05-05T13:43:15","slug":"tonight-earth-passes-through-debris-left-behind-by-halleys-comet-how-to-see","status":"publish","type":"post","link":"https:\/\/ultimabozza.it\/en\/tonight-earth-passes-through-debris-left-behind-by-halleys-comet-how-to-see\/","title":{"rendered":"Tonight Earth passes through debris left behind by Halley&#8217;s comet: how to see"},"content":{"rendered":"\n<p>Every year, between late April and early May,<strong> Earth passes through the debris trail left by Halley&#8217;s Comet<\/strong>. The result is one of the fastest and most abundant meteor showers of the year: <strong>the Eta Aquarids. It peaks on the night of May 5-6, between 4 a.m. and 5 a.m.<\/strong> This year there is one obstacle, the nearly full Moon, but the spectacle is still worth the early wake-up call.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-cosa-sono-le-eta-aquaridi\"><strong>What are Eta Aquaridae<\/strong><\/h3>\n\n<p>Eta Aquarids meteors are comet fragments-dust and ice compacted over time-that <strong>enter Earth&#8217;s atmosphere at about 66 kilometers per second, or more than 237,000 kilometers per hour.<\/strong> At that speed, the friction with atmospheric gases is enough to bring them to incandescence in fractions of a second, producing those white or colored trails that cross the field of vision before the brain has time to register them properly. <\/p>\n\n<figure class=\"wp-block-embed is-type-rich is-provider-instagram wp-block-embed-instagram\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"instagram-media\" data-instgrm-captioned data-instgrm-permalink=\"https:\/\/www.instagram.com\/p\/DX7LzTrmcDa\/?utm_source=ig_embed&amp;utm_campaign=loading\" data-instgrm-version=\"14\" style=\" background:#FFF; border:0; border-radius:3px; box-shadow:0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width:658px; min-width:326px; padding:0; width:99.375%; width:-webkit-calc(100% - 2px); width:calc(100% - 2px);\"><div style=\"padding:16px;\"> <a href=\"https:\/\/www.instagram.com\/p\/DX7LzTrmcDa\/?utm_source=ig_embed&amp;utm_campaign=loading\" style=\" background:#FFFFFF; line-height:0; padding:0 0; text-align:center; text-decoration:none; width:100%;\" target=\"_blank\"> <div style=\" display: flex; flex-direction: row; align-items: center;\"> <div style=\"background-color: #F4F4F4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;\"><\/div> <div style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center;\"> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;\"><\/div> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;\"><\/div><\/div><\/div><div style=\"padding: 19% 0;\"><\/div> <div style=\"display:block; height:50px; margin:0 auto 12px; width:50px;\"><svg width=\"50px\" height=\"50px\" viewBox=\"0 0 60 60\" version=\"1.1\" xmlns=\"https:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"https:\/\/www.w3.org\/1999\/xlink\"><g stroke=\"none\" stroke-width=\"1\" fill=\"none\" fill-rule=\"evenodd\"><g transform=\"translate(-511.000000, -20.000000)\" fill=\"#000000\"><g><path d=\"M556.869,30.41 C554.814,30.41 553.148,32.076 553.148,34.131 C553.148,36.186 554.814,37.852 556.869,37.852 C558.924,37.852 560.59,36.186 560.59,34.131 C560.59,32.076 558.924,30.41 556.869,30.41 M541,60.657 C535.114,60.657 530.342,55.887 530.342,50 C530.342,44.114 535.114,39.342 541,39.342 C546.887,39.342 551.658,44.114 551.658,50 C551.658,55.887 546.887,60.657 541,60.657 M541,33.886 C532.1,33.886 524.886,41.1 524.886,50 C524.886,58.899 532.1,66.113 541,66.113 C549.9,66.113 557.115,58.899 557.115,50 C557.115,41.1 549.9,33.886 541,33.886 M565.378,62.101 C565.244,65.022 564.756,66.606 564.346,67.663 C563.803,69.06 563.154,70.057 562.106,71.106 C561.058,72.155 560.06,72.803 558.662,73.347 C557.607,73.757 556.021,74.244 553.102,74.378 C549.944,74.521 548.997,74.552 541,74.552 C533.003,74.552 532.056,74.521 528.898,74.378 C525.979,74.244 524.393,73.757 523.338,73.347 C521.94,72.803 520.942,72.155 519.894,71.106 C518.846,70.057 518.197,69.06 517.654,67.663 C517.244,66.606 516.755,65.022 516.623,62.101 C516.479,58.943 516.448,57.996 516.448,50 C516.448,42.003 516.479,41.056 516.623,37.899 C516.755,34.978 517.244,33.391 517.654,32.338 C518.197,30.938 518.846,29.942 519.894,28.894 C520.942,27.846 521.94,27.196 523.338,26.654 C524.393,26.244 525.979,25.756 528.898,25.623 C532.057,25.479 533.004,25.448 541,25.448 C548.997,25.448 549.943,25.479 553.102,25.623 C556.021,25.756 557.607,26.244 558.662,26.654 C560.06,27.196 561.058,27.846 562.106,28.894 C563.154,29.942 563.803,30.938 564.346,32.338 C564.756,33.391 565.244,34.978 565.378,37.899 C565.522,41.056 565.552,42.003 565.552,50 C565.552,57.996 565.522,58.943 565.378,62.101 M570.82,37.631 C570.674,34.438 570.167,32.258 569.425,30.349 C568.659,28.377 567.633,26.702 565.965,25.035 C564.297,23.368 562.623,22.342 560.652,21.575 C558.743,20.834 556.562,20.326 553.369,20.18 C550.169,20.033 549.148,20 541,20 C532.853,20 531.831,20.033 528.631,20.18 C525.438,20.326 523.257,20.834 521.349,21.575 C519.376,22.342 517.703,23.368 516.035,25.035 C514.368,26.702 513.342,28.377 512.574,30.349 C511.834,32.258 511.326,34.438 511.181,37.631 C511.035,40.831 511,41.851 511,50 C511,58.147 511.035,59.17 511.181,62.369 C511.326,65.562 511.834,67.743 512.574,69.651 C513.342,71.625 514.368,73.296 516.035,74.965 C517.703,76.634 519.376,77.658 521.349,78.425 C523.257,79.167 525.438,79.673 528.631,79.82 C531.831,79.965 532.853,80.001 541,80.001 C549.148,80.001 550.169,79.965 553.369,79.82 C556.562,79.673 558.743,79.167 560.652,78.425 C562.623,77.658 564.297,76.634 565.965,74.965 C567.633,73.296 568.659,71.625 569.425,69.651 C570.167,67.743 570.674,65.562 570.82,62.369 C570.966,59.17 571,58.147 571,50 C571,41.851 570.966,40.831 570.82,37.631\"><\/path><\/g><\/g><\/g><\/svg><\/div><div style=\"padding-top: 8px;\"> <div style=\" color:#3897f0; font-family:Arial,sans-serif; font-size:14px; font-style:normal; font-weight:550; line-height:18px;\">View this post on Instagram<\/div><\/div><div style=\"padding: 12.5% 0;\"><\/div> <div style=\"display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;\"><div> <div style=\"background-color: #F4F4F4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);\"><\/div> <div style=\"background-color: #F4F4F4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;\"><\/div> <div style=\"background-color: #F4F4F4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);\"><\/div><\/div><div style=\"margin-left: 8px;\"> <div style=\" background-color: #F4F4F4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;\"><\/div> <div style=\" width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg)\"><\/div><\/div><div style=\"margin-left: auto;\"> <div style=\" width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);\"><\/div> <div style=\" background-color: #F4F4F4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);\"><\/div> <div style=\" width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);\"><\/div><\/div><\/div> <div style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;\"> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;\"><\/div> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;\"><\/div><\/div><\/a><\/div><\/blockquote><script async src=\"\/\/platform.instagram.com\/en_US\/embeds.js\"><\/script>\n<\/div><\/figure>\n\n<p>The Eta Aquarids are among the most generous meteor showers of the first half of the year: according to the<a href=\"https:\/\/www.imo.net\/\">International Meteor Organization<\/a>, under ideal conditions they produce up to 50 meteors per hour, two to three times more than the October Orionids, which also share the same parent comet. A not insignificant detail: this swarm is known for persistent trails, bright streaks that remain visible in the sky for a few seconds after the meteor passes, like a mark left in the air. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-perche-si-chiamano-cosi\"><strong>Why are they called that<\/strong><\/h3>\n\n<p>The name follows a precise astronomical logic. &#8220;Aquarids&#8221; because their radiant-the point in the sky from which the trails appear to come, for a perspective effect similar to that perceived by driving under snow-is in the constellation Aquarius. &#8220;Eta&#8221; because that point is close to the star \u03b7 Aquarii, the seventh brightest in the constellation according to Greek classification. The distinction is important: in July the same constellation is home to the Delta Aquarii, another swarm, but one of completely different origin.   <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-gli-earth-grazers\"><strong>The &#8220;Earth-grazers<\/strong>&#8220;<\/h3>\n\n<p>For those observing from Italy, the position of the radiant relative to the horizon creates conditions for a particularly spectacular phenomenon: the so-called Earth-grazers, meteors that skim the upper layers of the atmosphere almost horizontally. Instead of a short, vertical trail, they produce very long trajectories that seem to travel across the entire sky from side to side, often with changing colors, before fading away. They are rarer than ordinary meteors, but when seen, they are hard to forget.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-quando-guardare-e-dove\"><strong>When to look and where<\/strong><\/h3>\n\n<p>The peak is on the night of May 5-6, 2026, but the nights between May 4 and 7 are all valid. Time matters: before midnight it is practically useless to go out, the radiant is too low. The best window is between 4:00 and 5:00 am, when the constellation Aquarius will be high enough on the east-southeast horizon. Around 5:30 a.m. the sky begins to clear for the Sunrise, and the show closes.   <\/p>\n\n<p>The right direction is east\/southeast, keeping the gaze about 30-40 degrees above the horizon. Telescopes or binoculars are not needed; on the contrary, they would unnecessarily narrow the field of view. Meteors are observed with the naked eye, aiming to encompass the widest possible portion of the sky.  <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-il-problema-di-questa-edizione-2026-la-luna\"><strong>The &#8220;problem&#8221; of this 2026 edition: the moon<\/strong><\/h3>\n\n<p>The full moon fell on May 1, so on the night of the peak we will have a waning gibbous Moon with an illumination around 84%: very bright, and with a habit of rising just in the second part of the night, not far from the radiant of the swarm. Under these conditions, the fainter meteors are &#8220;buried&#8221; by the lunar flare, and the sighting rate may drop below 10 meteors per hour compared to the normal average of 10-30. <\/p>\n\n<p>The solution is to position yourself where a physical obstacle-a building, a hill, a row of trees-physically hides the lunar disk from view. This will recover some contrast in the sky, and even with the Moon partially shielded the brightest meteors and persistent trails remain clearly visible. <\/p>\n\n<h3 class=\"wp-block-heading\" id=\"h-come-prepararsi\"><strong>How to prepare<\/strong><\/h3>\n\n<p>Finding a dark place is the priority: away from artificial city lights, with an unobstructed east-southeast horizon. Once at the location, it takes at least 20-30 minutes for the eyes to adjust to the darkness, a real physiological process, not an exaggeration. A smartphone on at that juncture resets everything: the light from the screen is enough to impair night vision in seconds. Dressing warm is more important than it sounds: the hours between 3 and 5 a.m. in early May can be chilly, and prolonged immobility doesn&#8217;t help. A towel to lie on to look up is more comfortable than any other position.    <\/p>\n\n<p>Halley&#8217;s Comet we won&#8217;t see it until 2061. But tonight, clouds permitting, we may encounter something of its own. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Between May 5 and 6 the peak. A practical guide not to miss the show <\/p>\n","protected":false},"author":35,"featured_media":18367,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowscnaCw:productID":"","_app_feed_target":"","footnotes":""},"categories":[1628],"tags":[1888,2055],"class_list":["post-18366","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-space","tag-space","tag-universe"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tonight Earth passes through debris left behind by Halley&#039;s comet: how to see &#8226; Ultima Bozza<\/title>\n<meta name=\"description\" content=\"Between May 5 and 6 the peak. 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