--- title: 'Baby Jupiter' Discovered by Gemini Planet Imager description: A new tool for space exploration has spotted a Jupiter-like exoplanet only 100 light years away from Earth canonical: https://time.com/3998014/space-baby-jupiter/ author: Victor Luckerson article:opinion: false article:content_tier: free article:published_time: 2015-08-14T16:33:02.000Z article:modified_time: 2026-08-04T07:58:09.439Z article:section: Science og:title: This New Space Instrument Just Discovered a ‘Baby Jupiter’ og:description: Newly discovered planet resides in a solar system that may be similar to Earth's og:url: https://time.com/3998014/space-baby-jupiter/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt146f393fd4a7d223/69885f540a4a2231ed9c59ea/young-jupiter.jpg?branch=production&width=620&quality=75&auto=webp&crop=16:9 og:image:width: 620 og:image:height: 349 og:image:alt: young-jupiter og:type: article twitter:card: summary_large_image twitter:title: This New Space Instrument Just Discovered a ‘Baby Jupiter’ twitter:description: Newly discovered planet resides in a solar system that may be similar to Earth's twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt146f393fd4a7d223/69885f540a4a2231ed9c59ea/young-jupiter.jpg?branch=production&width=620&quality=75&auto=webp&crop=16:9 ---  # This New Space Instrument Just Discovered a ‘Baby Jupiter’ > Sponsored content. 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It reaches 40,000 subscribers with a 34.2% open rate and a 2.1% click rate as of August 2026. #### Where can I follow the energy transition as a business story? Future Proof covers climate and energy as an economic and business story rather than only an environmental one. It publishes every Friday and is free at time.com/newsletters. #### Who writes Future Proof? Justin Worland, a senior correspondent at TIME and an award-winning climate journalist, writes Future Proof. #### Is Future Proof free? Yes. Future Proof is free at time.com/newsletters. ## Video: A Year in Space - Ep.1: Leaving Home [Watch (HLS stream): A Year in Space - Ep.1: Leaving Home](https://cdn.jwplayer.com/manifests/6ookw4W2.m3u8) (13:31)  _Published 2021-03-11. A Year in Space - Ep.1: Leaving Home_ by [Victor Luckerson](https://time.com/author/victor-luckerson/) ## Victor Luckerson Aug 14, 2015 4:33 PM UTC  Danielle Futselaar & Franck Marchis, SETI Institute by [Victor Luckerson](https://time.com/author/victor-luckerson/) ## Victor Luckerson Aug 14, 2015 4:33 PM UTC A new tool for space exploration has [spotted a Jupiter-like exoplanet](http://www.washingtonpost.com/news/speaking-of-science/wp/2015/08/13/newly-discovered-jupiter-like-planet-may-sit-in-a-solar-system-much-like-our-own/?tid=sm%5Ftw) only 100 light years away from Earth. The planet, which scientists have dubbed 51 Eri b, was seen by the Gemini Planet Imager, an instrument that finds planets by analyzing the glow they emit. The GPI is similar to the more famous Kepler space telescope, which has discovered thousands of planets in far-flung solar systems. While the Kepler uses the shadow that planets throw on stars to discover them, GPI looks at the planets themselves and is therefore able to detect planets that are much farther away from stars. The new Jupiter-like planet has mass about twice as big as our Jupiter, and orbits its sun at a similar distance as Saturn. The Washington _Post_ dubbed the planet a “baby Jupiter.” The planet’s similarities to our Jupiter, as well as a pair of nearby dust belts similar to those found near Earth, indicate that 51 Eri b’s solar system may in many ways be similar to a younger version of Earth’s solar system. \[[_Washington Post_](http://www.washingtonpost.com/news/speaking-of-science/wp/2015/08/13/newly-discovered-jupiter-like-planet-may-sit-in-a-solar-system-much-like-our-own/?tid=sm%5Ftw)\] ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3998014/space-baby-jupiter/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3998014/space-baby-jupiter/"},"headline":"This New Space Instrument Just Discovered a ‘Baby Jupiter’","datePublished":"2015-08-14T16:33:02.000Z","dateModified":"2026-08-04T07:58:09.439Z","description":"Newly discovered planet resides in a solar system that may be similar to Earth's","url":"https://time.com/3998014/space-baby-jupiter/","keywords":["Space","Kepler","jupiter","solar system"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt146f393fd4a7d223/69885f540a4a2231ed9c59ea/young-jupiter.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Victor Luckerson","jobTitle":null,"url":"https://time.com/author/victor-luckerson/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt146f393fd4a7d223/69885f540a4a2231ed9c59ea/young-jupiter.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"young-jupiter","caption":"","creditText":"Danielle Futselaar & Franck Marchis, SETI Institute","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/space/","name":"Space"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3998014/space-baby-jupiter/","name":"This New Space Instrument Just Discovered a ‘Baby Jupiter’"}}]},{"@context":"https://schema.org","@type":"VideoObject","name":"A Year in Space - Ep.1: Leaving Home","description":"A Year in Space - Ep.1: Leaving Home","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/6ookw4W2/poster.jpg?width=720","uploadDate":"2021-03-11T18:13:57.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/6ookw4W2.m3u8","embedUrl":"https://time.com/3998014/space-baby-jupiter/","duration":"PT13M31S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/3998014/space-baby-jupiter/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}}] ```