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The proposal comes from a California startup called Reflect Orbital<\/a>, which plans to place 4,000 large sky mirrors into orbit to reflect sunlight onto targeted areas of Earth after dark.<\/p>\n Night sky observation relies on dependable darkness, and even small changes can hide faint objects or confuse time-sensitive measurements.<\/p>\n The work was led by Alejandro S. Borlaff, Ph.D., at NASA\u2019s Ames Research Center<\/a>.\u00a0His research focuses on how large satellite constellations can streak images and raise background glare for telescopes.<\/p>\n Sky mirrors reflect sunlight<\/p>\n Reflect Orbital<\/a> designed the plan to send sunlight to Earth<\/a> at night using mirrors of up to 180 feet (55 meters) wide.<\/p>\n Each reflector redirects incoming sunlight, so extra light reaches a chosen solar site when panels would otherwise sit idle.<\/p>\n Because the Sun has a real width in the sky, the reflected beam spreads out, limiting brightness and concentrating power poorly.<\/p>\n Engineers want the sky mirrors to ride a sun-synchronous orbit, an orbit that keeps a steady local solar time.<\/p>\n That path stays near the day-night boundary, so the mirror plan can still catch sunlight while targets on Earth already sit in the dark.<\/p>\n The same geometry also places bright reflectors near dusk and dawn skies, when many observatories and animals stay active.<\/p>\n Testing the first sky mirror<\/p>\n A Federal Communications Commission (FCC<\/a>) license request covers the first sky mirror satellite named Earendil-1, with a target launch in early April 2026.<\/p>\n During the planned 2026 demonstration, people watching from approved test locations are expected to notice the reflection as a bright object moving across the sky.<\/p>\n After a pass, the company says the sky mirror<\/a> will tilt away from Earth, shortening exposure time and reducing stray brightness.<\/p>\n Sky mirrors that look like stars<\/p>\n Reflected light can travel beyond the target because atmospheric scattering, air molecules and aerosols spreading light sideways, brightens nearby skies.<\/p>\n Some astronomers warn that the direct beam could appear four times brighter than the full moon, and remain noticeable 60 miles (96 kilometers) away.<\/p>\n Even with tight pointing, those moving highlights can sweep across telescopes and habitats, turning brief tests into wide concerns.<\/p>\n Space junk problem<\/p>\n Low Earth orbit now hosts many working spacecraft plus space debris, leftover human-made fragments racing around Earth, and NASA teams track the traffic constantly.<\/p>\n Objects meet at several miles per second, so even a small fragment can punch holes or shatter systems on impact.<\/p>\n Adding more reflective satellites<\/a> raises the odds of close calls and collisions, and cleanup options stay limited once debris spreads.<\/p>\n Sky mirrors and telescopes<\/p>\n A 2025 forecast<\/a> shows satellite trails could contaminate images taken by orbiting telescopes that are meant to avoid city lights.<\/p>\n \u201cOur results demonstrate that light contamination is a growing threat for space telescope operations,\u201d wrote Dr. Borlaff.<\/p>\n Satellite numbers climbed from about 2,000 in 2019 to 15,000 in 2025, with 560,000 projected by 2040, leaving one-third of Hubble images affected.<\/p>\n Night sky brightness<\/a> rises about 10% each year in many places, creating skyglow, a diffuse bright haze that hides faint stars.<\/p>\n Mirror reflections add moving light sources, and each extra streak raises background noise in images, masking dim asteroids or galaxies.<\/p>\n Even when software removes a trail, researchers can lose data where it crossed the target, limiting what long surveys detect.<\/p>\n Wildlife depends on darkness<\/p>\n Many species time feeding, hunting, and migration using a circadian rhythm, the body clock that times sleep and hormones.<\/p>\n Artificial illumination can reset that clock by changing hormone release, and bright skies also blunt natural cues like starlight.<\/p>\n If the mirror plan creates repeated bright passes, nocturnal animals and migrating birds could face stress during periods in which they usually rest.<\/p>\n Disrupting human sleep<\/p>\n Human eyes send light signals to the brain, and bright nights can suppress melatonin, a hormone that helps start and keep sleep.<\/p>\n Later bedtimes can follow, and repeated disruption can worsen mood and concentration, especially when light arrives unexpectedly from outdoors.<\/p>\n Communities could also worry about equity, because people cannot choose whether a satellite<\/a> passes over their homes on a given night.<\/p>\n Rules lag behind launches<\/p>\n U.S. regulators can ask for an environmental impact assessment, a formal review of likely harms, before approving large deployments.<\/p>\n That process weighs brightness, debris risk, and ecological sensitivity, yet space<\/a> law still treats sunlight reflection as a new case.<\/p>\n If decisions stay scattered across agencies and nations, the sky mirror plan could move ahead faster than shared standards can form.<\/p>\n Who owns the sky?<\/p>\n Satellites cross borders every orbit, so choices about brightness and pointing affect people who never buy the service.<\/p>\n International coordination could set limits on apparent magnitude, a scale that astronomers use to rank brightness, and designers could publish schedules for avoidance planning.<\/p>\n Without those guardrails, bright mirrors risk becoming normal, and future companies may copy the idea for other markets.<\/p>\n Future of sky mirrors<\/p>\n Grid planners already extend solar value with batteries, demand response, and transmission, keeping night skies darker while meeting peaks.<\/p>\n Those tools store energy instead of adding light, and the basic physics stays on the ground where rules are clearer.<\/p>\n If the mirror plan proceeds, public debate should compare benefits against lasting changes to astronomy, wildlife, and sleep.<\/p>\n Reflect Orbital\u2019s mirror plan ties energy ambition to the sky itself, and small design choices could ripple across science and nature.<\/p>\n Clear limits, public review, and shared tracking could decide whether night stays dark in most places, even as the space business grows.<\/p>\n \u2014\u2013<\/p>\n Like what you read? Subscribe to our newsletter<\/a> for engaging articles, exclusive content, and the latest updates.<\/p>\n Check us out on EarthSnap<\/a>, a free app brought to you by Eric Ralls<\/a> and Earth.com.<\/p>\n \u2014\u2013<\/p>\n","protected":false},"excerpt":{"rendered":"The night sky may no longer belong entirely to the darkness if a new space project moves ahead…\n","protected":false},"author":2,"featured_media":606723,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[79,193],"class_list":{"0":"post-606722","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-science","9":"tag-space"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/606722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=606722"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/606722\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/606723"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=606722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=606722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=606722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}