{"id":674567,"date":"2026-03-22T21:25:18","date_gmt":"2026-03-22T21:25:18","guid":{"rendered":"https:\/\/www.europesays.com\/us\/674567\/"},"modified":"2026-03-22T21:25:18","modified_gmt":"2026-03-22T21:25:18","slug":"how-hubble-forever-changed-our-understanding-of-the-universe","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/674567\/","title":{"rendered":"How Hubble forever changed our understanding of the universe"},"content":{"rendered":"<p>The Hubble Space Telescope, the most celebrated observatory in history, turns 36 years old next month.<\/p>\n<p>Last year, to mark its 35th birthday, NASA released a fresh gallery of <a href=\"https:\/\/science.nasa.gov\/missions\/hubble\/nasa-celebrates-hubbles-35th-year-in-orbit\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">images<\/a> spanning our solar system and well beyond \u2013 from Mars\u2019s ruddy surface to star-forming <a href=\"https:\/\/www.earth.com\/news\/unraveling-the-mysterious-origins-of-the-crab-nebula\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">nebulae<\/a> and a neighboring galaxy.<\/p>\n<p><a href=\"https:\/\/earthsnap.onelink.me\/3u5Q\/ags2loc4\" rel=\"noopener nofollow\" target=\"_blank\">&#13;<br \/>\n    <img decoding=\"async\" class=\"fit-picture\" loading=\"lazy\" src=\"https:\/\/www.europesays.com\/us\/wp-content\/uploads\/2025\/06\/earthsnap-banner-news.webp.webp\" alt=\"EarthSnap\"\/>&#13;<br \/>\n<\/a><\/p>\n<p>The new portraits serve not only as a birthday gift to the public, but also as a vivid reminder of how profoundly Hubble has transformed modern astronomy and popular culture alike.<\/p>\n<p>Fixing Hubble\u2019s blurry beginnings<\/p>\n<p>On April 24, 1990, the space shuttle Discovery roared into the sky with Hubble folded inside its cargo bay. A <a href=\"http:\/\/NASA.gov\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">NASA<\/a> commentator called the telescope \u201ca new window on the universe,\u201d raising expectations sky-high.<\/p>\n<p>Yet jubilation faded fast when engineers found a tiny mirror flaw that made early images frustratingly blurry.<\/p>\n<p>The rescue came in December 1993, when astronauts performed the first of five intricate servicing missions. <\/p>\n<p>They installed corrective optics \u2013 an optical \u201ccontact lens\u201d \u2013 and upgraded Hubble\u2019s cameras and electronics. The successful fix restored the telescope\u2019s vision and set the stage for three decades of breakthrough science.<\/p>\n<p>\u201cHubble opened a new window to the universe when it launched 35 years ago,\u201d said Shawn Domagal-Goldman, acting director of the <a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Astrophysics Division<\/a> at NASA Headquarters. <\/p>\n<p>\u201cIts stunning imagery inspired people across the globe, and the data behind those images revealed surprises about everything from early galaxies to planets in our own solar system.\u201d<\/p>\n<p>An astounding success story<\/p>\n<p>Since that turning point, Hubble has recorded nearly 1.7 million observations of roughly 55,000 celestial targets. <\/p>\n<p>Those data have generated more than 22,000 peer-reviewed papers, amassing over 1.3 million citations \u2013 figures that make Hubble the most scientifically productive telescope ever built. <\/p>\n<p>All its raw images and spectra, totaling more than 400 terabytes, are publicly archived, fueling new discoveries every year.<\/p>\n<p>The mission\u2019s longevity lets astronomers revisit cosmic scenes and track their evolution in near-real time. <\/p>\n<p>Hubble has tracked the seasonal shifts of <a href=\"https:\/\/www.earth.com\/news\/asteroid-could-be-pushed-into-a-collision-course-with-earth\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Mars<\/a> and Saturn, watched supernova remnants balloon outward, chronicled bright knots in active galactic nuclei, and even captured the afterglow of <a href=\"https:\/\/www.earth.com\/news\/asteroid-could-be-pushed-into-a-collision-course-with-earth\/\" rel=\"nofollow noopener\" target=\"_blank\">asteroid collisions<\/a>. <\/p>\n<p>Each long-baseline study illuminates processes that once seemed too slow to witness within a single human career.<\/p>\n<p>How Hubble redefined the cosmos<\/p>\n<p>Before Hubble, ground-based observatories peering through Earth\u2019s turbulent atmosphere could see only halfway across the visible universe. <\/p>\n<p>Estimates of cosmic age oscillated wildly, and astronomers could only speculate about whether every galaxy harbored a central <a href=\"https:\/\/www.earth.com\/news\/how-do-black-holes-become-supermassive\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">supermassive black hole<\/a>. The existence of planets around other stars was still unconfirmed.<\/p>\n<p>Hubble rewrote those narratives. Its legendary Deep Field images unveiled a staggering population of faint, ancient galaxies stretching back more than 13 billion years. <\/p>\n<p>By tracking Cepheid variable stars and Type Ia supernovae, the telescope pinned down the rate of cosmic expansion. It helped expose <a href=\"https:\/\/www.earth.com\/news\/dark-energy-is-ripping-the-universe-apart-but-we-arent-sure-how\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">dark energy<\/a>, a discovery that later earned the 2011 Nobel Prize in Physics.<\/p>\n<p>Hubble also furnished the first measurements of exoplanet atmospheres and demonstrated that supermassive black holes lurk in the cores of most large galaxies. <\/p>\n<p>The telescope\u2019s wide-ranging achievements inspired a wave of next-generation observatories, including the infrared-optimized James Webb Space Telescope.<\/p>\n<p>Engineering made Hubble unstoppable<\/p>\n<p>Part of Hubble\u2019s success stems from its design as a serviceable spacecraft. <\/p>\n<p>Between 1993 and 2009, five shuttle crews rendezvoused with the 24,000-pound telescope to swap out gyroscopes, batteries, and scientific instruments. These cosmic pit stops transformed Hubble into a nimble, ever-improving workhorse.<\/p>\n<p>\u201cThe fact that it is still operating today is a testament to the value of our flagship observatories, and provides critical lessons for the <a href=\"https:\/\/science.nasa.gov\/astrophysics\/programs\/habitable-worlds-observatory\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Habitable Worlds Observatory<\/a>, which we plan to be serviceable in the spirit of Hubble,\u201d Domagal-Goldman noted.<\/p>\n<p>While the final shuttle mission in 2009 left Hubble in excellent health, engineers have spent the past decade developing innovative software patches. They also created remote troubleshooting techniques to counter aging hardware.<\/p>\n<p>As a result, the Hubble telescope remains fully operational. It partners with Webb to study exoplanet atmospheres and map the formation of distant galaxy clusters.<\/p>\n<p>A cultural icon<\/p>\n<p>Beyond its scientific cachet, Hubble has captured the public imagination. Its images \u2013 Pillars of Creation, the Eagle Nebula, the Horsehead, the Sombrero Galaxy \u2013 decorate classrooms, inspire artists, and headline documentaries.<\/p>\n<p>Hubble\u2019s visual output demystifies astrophysics, turning arcane data into vibrant landscapes that convey both beauty and scale. <\/p>\n<p>The telescope\u2019s success has shown that deep-space exploration is not just for scientists, but for everyone who gazes upward in wonder.<\/p>\n<p>New telescope built on Hubble\u2019s lessons<\/p>\n<p>Hubble\u2019s torch will eventually pass to the Habitable Worlds Observatory (<a href=\"https:\/\/science.nasa.gov\/astrophysics\/programs\/habitable-worlds-observatory\/\" type=\"link\" id=\"https:\/\/science.nasa.gov\/astrophysics\/programs\/habitable-worlds-observatory\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">HWO<\/a>), NASA\u2019s proposed successor for the 2040s.<\/p>\n<p>With a mirror much larger than Hubble\u2019s and capabilities in the ultraviolet and visible bands, HWO aims to be up to 100 times more sensitive to starlight.<\/p>\n<p>A key mission goal is finding Earth-size planets in habitable zones and detecting possible signs of life in their atmospheres. <\/p>\n<p>Engineers plan to make HWO serviceable, drawing directly on the lessons learned from three decades of keeping Hubble alive and thriving.<\/p>\n<p>A legacy that\u2019s still growing<\/p>\n<p>For now, Hubble continues its pioneering journey, orbiting Earth every 97 minutes at an altitude of about 330 miles. <\/p>\n<p>Each day it scans the space, adding new data to its towering archive and offering humanity fresh vistas of <a href=\"https:\/\/www.earth.com\/news\/new-molecule-detected-in-space-where-stars-are-born\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">star birth<\/a>, galaxy collisions, and planetary weather.<\/p>\n<p>From its rocky start to its current stardom, Hubble\u2019s 35-year run epitomizes ingenuity, perseverance, and curiosity \u2013 the very traits that fuel all great explorations. <\/p>\n<p>NASA\u2019s newest image release is both a birthday card and a reminder: somewhere high above, an aging yet agile Hubble telescope still opens that \u201cnew window on the universe,\u201d inviting us to peer through and dream.<\/p>\n<p>Image Credit: NASA\/ Hubble Heritage Team<\/p>\n<p>\u2014\u2013<\/p>\n<p>Like what you read? <a href=\"https:\/\/www.earth.com\/subscribe\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Subscribe to our newsletter<\/a> for engaging articles, exclusive content, and the latest updates.<\/p>\n<p>Check us out on <a href=\"https:\/\/www.earth.com\/earthsnap\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">EarthSnap<\/a>, a free app brought to you by <a href=\"https:\/\/www.earth.com\/author\/eralls\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Eric Ralls<\/a> and Earth.com.<\/p>\n<p>\u2014\u2013<\/p>\n","protected":false},"excerpt":{"rendered":"The Hubble Space Telescope, the most celebrated observatory in history, turns 36 years old next month. Last year,&hellip;\n","protected":false},"author":3,"featured_media":674568,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[159,783,67,132,68],"class_list":{"0":"post-674567","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-science","9":"tag-space","10":"tag-united-states","11":"tag-unitedstates","12":"tag-us"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/116274942822297334","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/674567","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=674567"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/674567\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/674568"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=674567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=674567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=674567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}