{"id":18356,"date":"2025-11-29T14:51:24","date_gmt":"2025-11-29T12:51:24","guid":{"rendered":"https:\/\/starbottle.space\/?p=18356"},"modified":"2025-11-29T14:51:26","modified_gmt":"2025-11-29T12:51:26","slug":"scoperti-oltre-40mila-asteroidi-vicini-alla-terra-la-nuova-sfida-della-difesa-planetaria","status":"publish","type":"post","link":"https:\/\/starbottle.space\/en\/over-40000-asteroids-close-to-earth-discovered-the-new-challenge-for-planetary-defence\/","title":{"rendered":"Over 40,000 asteroids close to Earth discovered: the new challenge for planetary defence"},"content":{"rendered":"<p>Near-Earth asteroids have exceeded quota <strong>40,000<\/strong>: a milestone that shows how much our ability to scan the sky has grown in recent decades. These objects, called <em>Near-Earth Objects<\/em> (NEOs) can come within 45 million kilometres of Earth's orbit, but only a small proportion pose a real risk.<\/p>\n\n\n\n<p>According to the latest data from the <strong>Near-Earth Object Coordination Centre (Neocc)<\/strong> of the European Space Agency, approximately <strong>2.000<\/strong> of these celestial bodies are classified as \u201cpotentially hazardous\u201d. Even in these cases, however, the probability of impact in the next hundred years remains very low \u2013 almost always less than 1% \u2013 and mainly concerns small objects.<\/p>\n\n\n\n<p>The race to discover it began way back in <strong>1898<\/strong>, when the first asteroid near Earth was identified. Since then, sightings have increased dramatically: as many as <strong>10,000 NEO<\/strong> have been catalogued only in the last three years. \u201cThe number of discoveries is increasing exponentially,\u201d explains Luca Conversi, head of ESA's Neocc.<\/p>\n\n\n\n<p>The arrival of new and more powerful telescopes promises to further accelerate this pace. In fact, the scientific community believes it has already identified almost all of the larger asteroids, those over one kilometre in size, which are potentially devastating. The challenge now shifts to bodies of <strong>100\u2013300 metres<\/strong>, which are much more difficult to detect: only 30% would be known.<\/p>\n\n\n\n<p>At the same time, space agencies are stepping up their efforts in <strong>planetary defence<\/strong>. ESA is already working on missions such as <strong>Hera<\/strong>, heading towards the asteroid Dimorphos to study the impact of NASA's Dart probe, <strong>Ramses<\/strong>, which will closely monitor the passage of the asteroid Apophis in 2029, and <strong>Neomir<\/strong>, the future \u201ceye in space\u201d capable of observing the region of the sky hidden by sunlight.<\/p>\n\n\n\n<p>Increasingly accurate monitoring and dedicated technologies will make Earth safer: the threat is not imminent, but continuous surveillance is the key to being prepared.<\/p>","protected":false},"excerpt":{"rendered":"<p>Gli asteroidi vicini alla Terra hanno superato quota 40mila: un traguardo che racconta quanto la nostra capacit\u00e0 di scandagliare il cielo sia cresciuta negli ultimi decenni. Questi oggetti, detti Near-Earth Objects (NEO), possono avvicinarsi fino a 45 milioni di chilometri dall\u2019orbita terrestre, ma solo una piccola parte rappresenta un rischio concreto. Secondo gli ultimi dati [&hellip;]<\/p>\n","protected":false},"author":55,"featured_media":18357,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"wds_primary_category":44,"footnotes":""},"categories":[44],"tags":[],"class_list":["post-18356","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vita-nello-spazio"],"acf":[],"_links":{"self":[{"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/posts\/18356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/comments?post=18356"}],"version-history":[{"count":1,"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/posts\/18356\/revisions"}],"predecessor-version":[{"id":18358,"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/posts\/18356\/revisions\/18358"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/media\/18357"}],"wp:attachment":[{"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/media?parent=18356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/categories?post=18356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starbottle.space\/en\/wp-json\/wp\/v2\/tags?post=18356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}