{"id":1085,"date":"2025-10-17T13:35:19","date_gmt":"2025-10-17T13:35:19","guid":{"rendered":"https:\/\/www.science.sbtechem.com\/?p=1085"},"modified":"2025-10-17T13:35:19","modified_gmt":"2025-10-17T13:35:19","slug":"invisible-threats-asteroids-hiding-near-venus-could-one-day-collide-with-earth-scientists-warn","status":"publish","type":"post","link":"https:\/\/www.science.sbtechem.com\/?p=1085","title":{"rendered":"Invisible Threats: Asteroids Hiding Near Venus Could One Day Collide with Earth, Scientists Warn"},"content":{"rendered":"<div class=\"7a19b57d3f502e506f541b4c6899bb20\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script type=\"text\/javascript\">\r\n\tatOptions = {\r\n\t\t'key' : '763760c8ca37b90150f32ad474f817c0',\r\n\t\t'format' : 'iframe',\r\n\t\t'height' : 250,\r\n\t\t'width' : 300,\r\n\t\t'params' : {}\r\n\t};\r\n<\/script>\r\n<script type=\"text\/javascript\" src=\"\/\/electthirteenth.com\/763760c8ca37b90150f32ad474f817c0\/invoke.js\"><\/script>\n<\/div>\n<p>A new study published in Astronomy &amp; Astrophysics has revealed a hidden danger lurking close to our solar neighborhood \u2014 asteroids that orbit the Sun alongside Venus but remain nearly invisible to telescopes on Earth. These elusive space rocks, known as Venus co-orbital asteroids, could one day shift their paths and threaten our planet, researchers warn.<\/p>\n<p>&nbsp;<\/p>\n<p>According to scientists, these asteroids don\u2019t actually orbit Venus itself. Instead, they travel around the Sun in sync with Venus, following it or leading it in looping, unstable orbits. Their positioning, however, makes them extremely difficult to detect. Because they orbit closer to the Sun than Earth does, the glare from sunlight drowns out their reflected light, hiding them from even the most powerful telescopes.<\/p>\n<p>&nbsp;<\/p>\n<p>So far, astronomers have only confirmed about 20 known Venus co-orbital asteroids, but experts believe that hundreds more could be out there, completely unseen. Some of these could be hundreds of meters across, large enough to cause catastrophic damage if one were to ever collide with Earth.<\/p>\n<p>&nbsp;<\/p>\n<p>\u201cIf one of these asteroids hit our planet, it could create a crater several kilometers wide and release energy comparable to hundreds of nuclear bombs,\u201d researchers noted.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&#8212;<\/p>\n<p>&nbsp;<\/p>\n<p>Why They\u2019re So Hard to Find<\/p>\n<p>&nbsp;<\/p>\n<p>Detecting asteroids usually relies on spotting their faint reflection of sunlight. But because these Venus co-orbitals stay close to the Sun\u2019s glare from Earth\u2019s point of view, they\u2019re hidden in daylight. Even advanced observatories like NASA\u2019s NEOWISE or ground-based surveys struggle to pick them up unless they briefly move into darker parts of the sky.<\/p>\n<p>&nbsp;<\/p>\n<p>The upcoming Vera Rubin Observatory in Chile, which will soon begin its full-sky survey using the world\u2019s largest digital camera, might help identify some of these hidden bodies. However, even Rubin\u2019s massive 3.2-gigapixel telescope can only detect them during specific times of the year when the geometry between Earth, Venus, and the asteroids lines up just right.<\/p>\n<p>&nbsp;<\/p>\n<p>\u201cMost of the time, these asteroids are literally lost in sunlight,\u201d said lead researcher Dr. Valerio Carruba. \u201cIt\u2019s like trying to spot a firefly next to a searchlight.\u201d<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&#8212;<\/p>\n<p>&nbsp;<\/p>\n<p>A Shifting Danger<\/p>\n<p>&nbsp;<\/p>\n<p>What makes these asteroids particularly worrying isn\u2019t just that they\u2019re invisible \u2014 it\u2019s that their orbits are unstable. The study found that their paths slowly evolve over thousands of years due to gravitational interactions with Venus, Earth, and other planets.<\/p>\n<p>&nbsp;<\/p>\n<p>Researchers estimate that these orbits can change significantly every 12,000 years, but scientists can only accurately predict their movement for about the next 150 years. After that, the uncertainty becomes too large to know exactly where they\u2019ll go.<\/p>\n<p>&nbsp;<\/p>\n<p>That means a currently harmless Venus co-orbital asteroid could, over millennia, shift into an orbit that crosses Earth\u2019s path, turning it into a potential impact threat.<\/p>\n<p>&nbsp;<\/p>\n<p>\u201cEven though these objects seem stable now, they can become dangerous in the distant future,\u201d Dr. Carruba explained. \u201cIt\u2019s a slow but unpredictable process.\u201d<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&#8212;<\/p>\n<p>&nbsp;<\/p>\n<p>What the Simulations Revealed<\/p>\n<p>&nbsp;<\/p>\n<p>To better understand the risks, researchers ran computer simulations tracking how these asteroids move under the influence of planetary gravity. They discovered that some follow complex, looping paths that temporarily lock them into resonance with Venus, while others wander between the orbits of Mercury, Venus, and Earth.<\/p>\n<p>&nbsp;<\/p>\n<p>These dynamic behaviors mean they can occasionally cross into Earth\u2019s orbital region, especially when gravitational nudges destabilize them. The simulations also suggested that some of these hidden asteroids could already be on the move toward more Earth-crossing trajectories, but because they\u2019re so hard to detect, scientists wouldn\u2019t notice until it\u2019s too late.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&#8212;<\/p>\n<p>&nbsp;<\/p>\n<p>Preparing for the Unseen<\/p>\n<p>&nbsp;<\/p>\n<p>Astronomers are now calling for dedicated space-based observatories that can look toward the Sun \u2014 something ground telescopes can\u2019t do safely. Missions like NASA\u2019s upcoming Near-Earth Object Surveyor (NEO Surveyor), launching later this decade, could provide crucial visibility by operating from space, away from Earth\u2019s atmosphere and sunlight interference.<\/p>\n<p>&nbsp;<\/p>\n<p>Finding these asteroids is critical not only for planetary defense but also for understanding how such co-orbital systems evolve. Venus\u2019s gravitational influence may play a larger role than previously thought in shaping asteroid movements across the inner solar system.<\/p>\n<p>&nbsp;<\/p>\n<p>\u201cEvery new discovery helps us fill in the missing pieces of our solar system\u2019s puzzle,\u201d said Dr. Carruba. \u201cBut we\u2019re also learning that there are still many threats hiding in plain sight \u2014 and we need to find them before they find us.\u201d<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Source:<\/p>\n<p>Carruba, V., et al. \u201cThe invisible threat\u2014Assessing the collisional hazard posed by undiscovered Venus co-orbital asteroids.\u201d Astronomy &amp; Astrophysics 699 (2025): A86.<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>A new study published in Astronomy &amp; Astrophysics has revealed a hidden danger lurking close to our solar neighborhood \u2014 asteroids that orbit the Sun alongside Venus but remain nearly invisible to telescopes on Earth. These elusive space rocks, known as Venus co-orbital asteroids, could one day shift their paths and threaten our planet, researchers\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.science.sbtechem.com\/?p=1085\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":598,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1085","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=\/wp\/v2\/posts\/1085","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1085"}],"version-history":[{"count":1,"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=\/wp\/v2\/posts\/1085\/revisions"}],"predecessor-version":[{"id":1086,"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=\/wp\/v2\/posts\/1085\/revisions\/1086"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=\/wp\/v2\/media\/598"}],"wp:attachment":[{"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1085"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1085"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.science.sbtechem.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1085"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}