{"id":283469,"date":"2021-06-24T16:58:21","date_gmt":"2021-06-24T13:58:21","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/can-et-see-us-study-finds-many-stars-with-prime-earth-view\/"},"modified":"2021-06-24T16:58:21","modified_gmt":"2021-06-24T13:58:21","slug":"can-et-see-us-study-finds-many-stars-with-prime-earth-view","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/can-et-see-us-study-finds-many-stars-with-prime-earth-view\/","title":{"rendered":"#Can ET see us? Study finds many stars with prime Earth view"},"content":{"rendered":"

“#Can ET see us? Study finds many stars with prime Earth view<\/strong>”
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Feeling like you are being watched? It could be from a lot farther away than you think.<\/p>\n

Astronomers took a technique used to look for life on other planets and flipped it around \u2014 so instead of looking to see what\u2019s out there, they tried to see what places could see us.<\/p>\n

There\u2019s a lot.<\/p>\n

Astronomers calculated that 1,715 stars in our galactic neighborhood \u2014 and hundreds of probable Earth-like planets circling those stars \u2014 have had an unobstructed view of Earth during human civilization, according to a study Wednesday in the journal\u00a0Nature.<\/a><\/p>\n

\u201cWhen I look up at the sky, it looks a little bit friendlier because it\u2019s like, maybe somebody is waving,\u201d said study lead author Lisa Kaltenegger, director of the Carl Sagan Institute at Cornell University.<\/p>\n

Even though some experts, including the late Stephen Hawking,\u00a0warn against reaching out<\/a>\u00a0to aliens because they could harm us, Kaltenegger said it doesn\u2019t matter. If those planets have advanced life, someone out there could conclude that there is life back here based on oxygen in our atmosphere, or by the radio waves from human sources that have swept over 75 of the closest stars on her list.<\/p>\n

\u201cHiding is not really an option,\u201d she said.<\/p>\n

One way humans look for potentially habitable planets is by watching them as they cross in front of the star they are orbiting, which dims the stars\u2019 light slightly. Kaltenegger and astrophysicist Jacqueline Faherty of the American Museum of Natural History used the European Space Agency\u2019s\u00a0Gaia space telescope\u00a0<\/a>to turn that around, looking to see what star systems could watch Earth as it passes in front of the sun.<\/p>\n

They looked at the 331,312 stars within 326 light-years of Earth. One light-year is 5.9 trillion miles. The angle to see Earth pass in front of the sun is so small that only the 1,715 could see Earth at some point in the last 5,000 years, including 313 that no longer can see us because we\u2019ve moved out of view.<\/p>\n

Another 319 stars will be able to see Earth in the next 5,000 years, including a few star systems where scientists have already spotted Earth-like planets, prime candidates for contact. That brings the total to more than 2,000 star systems with an Earth view.<\/p>\n

The closest star on Kaltenegger\u2019s list is the red dwarf star Wolf 359, which is 7.9 light-years away. It\u2019s been able to see us since the disco era of the mid 1970s.<\/p>\n

Carnegie Institution for Science<\/a> planetary scientist Alan Boss, who wasn\u2019t part of the study, called it \u201cprovocative.\u201d He said in addition to viewing Earth moving in front of the star, space telescopes nearby could spot us even if the cosmic geometry is wrong: \u201cSo intelligent civilizations who build space telescopes could be studying us right now.\u201d<\/p>\n

So why haven\u2019t we heard from them?<\/p>\n

It takes a long time for messages and life to travel<\/a> between stars and civilizations might not last long. So between those two it\u2019s enough to limit the chances for civilizations to exchange \u201cemails and TikTok videos,\u201d Boss said in his own email. \u201cSo we should not expect aliens to show up anytime soon.\u201d<\/p>\n

Or, Kaltenneger said, life in the cosmos, could just be rare.<\/p>\n

What\u2019s exciting about the study is that it tells scientists \u201cwhere to point our instruments,\u201d said outside astronomer Seth Shostak of the SETI Institute that searches for extraterrestrial intelligence. \u201cYou might know where to look for the aliens!\u201d\n <\/p><\/div>\n

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Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

“#Can ET see us? Study finds many stars with prime Earth view” Feeling like you are being watched? It could be from a lot farther away than you think. Astronomers took a technique used to look for life on other planets and flipped it around \u2014 so instead of looking to see what\u2019s out there,…<\/p>\n","protected":false},"author":1,"featured_media":283470,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/nypost.com\/wp-content\/uploads\/sites\/2\/2021\/06\/space-stars-62.jpg?quality=90&strip=all&w=1200","fifu_image_alt":"","footnotes":""},"categories":[70897],"tags":[110205,5017,80047,61514,67907,5019],"class_list":["post-283469","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-6-24-21","tag-astronomy","tag-exploration","tag-research","tag-science","tag-space"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/283469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=283469"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/283469\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/283470"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=283469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=283469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=283469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}