Scientists say NASA’s most distant exploring spacecraft has recorded what they describe as ‘humming’ beyond our solar system. A new study suggests the continuous hum, detected by the Voyager 1 spacecraft, is caused by waves existing in interstellar space. Voyager 1 left our solar system eight years ago, crossing the border that divides our solar system from interstellar space. “Interstellar” means “between stars.” Scientists say interstellar space begins where the sun's continual flow of material and its magnetic field stop. Researchers say instruments on Voyager 1 identified the waves as vibrations in small amounts of gas found in the near-emptiness of interstellar space. The vibrations are also known as plasma waves. The spacecraft detected the waves over several years at different radio frequencies. Results from Voyager 1’s findings were recently published in a study appearing in Nature Astronomy. Astronomers believe the space that Voyager 1 is passing through -- known as the interstellar medium -- is filled with different kinds of waves, both big and small. Such waves can provide information about the density of the interstellar medium. The new research was led by Stella Ocker, a doctoral student at New York’s Cornell University and a member of NASA’s Voyager 1 team. She was able to make the discovery by examining data slowly sent back by Voyager 1 from about 23 billion kilometers away.
Title: NASA Spacecraft Detects a ‘Hum’ in Interstellar Space
Content: <div id='article-page'><div id='article-content' data-media-url='//news-app-staging.s3.amazonaws.com' data-base-url='//news-app-staging.herokuapp.com' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/C.wav' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='NASA Spacecraft Detects a Hum in Interstellar Space' data-article-id='5653'><script src='//news-app-staging.herokuapp.com/javascripts/getscripts.js'></script><link rel='stylesheet' href='//news-app-staging.herokuapp.com/stylesheets/article.css' type='text/css' /><div class='article'><p><span data-start-time='0' data-end-time='14625'>Scientists say NASA’s most distant exploring spacecraft has recorded what they describe as ‘humming’ beyond our solar system.</span> <span data-start-time='14625' data-end-time='29583'>A new study suggests the continuous hum, detected by the Voyager 1 spacecraft, is caused by waves existing in interstellar space. </span> <span data-start-time='29583' data-end-time='43271'>Voyager 1 left our solar system eight years ago, crossing the border that divides our solar system from interstellar space.</span> <span data-start-time='43271' data-end-time='47896'>“Interstellar” means “between stars.” </span> <span data-start-time='47896' data-end-time='60938'>Scientists say interstellar space begins where the sun's continual flow of material and its magnetic field stop.</span> <span data-start-time='60938' data-end-time='77750'>Researchers say instruments on Voyager 1 identified the waves as vibrations in small amounts of gas found in the near-emptiness of interstellar space. </span> <span data-start-time='77750' data-end-time='84438'>The vibrations are also known as plasma waves. </span> <span data-start-time='84438' data-end-time='93167'>The spacecraft detected the waves over several years at different radio frequencies.</span> <span data-start-time='93167' data-end-time='103500'>Results from Voyager 1’s findings were recently published in a study appearing in Nature Astronomy.</span> <span data-start-time='103500' data-end-time='120271'>Astronomers believe the space that Voyager 1 is passing through -- known as the interstellar medium -- is filled with different kinds of waves, both big and small. </span> <span data-start-time='120271' data-end-time='129375'>Such waves can provide information about the density of the interstellar medium.</span> <span data-start-time='129375' data-end-time='143708'>The new research was led by Stella Ocker, a doctoral student at New York’s Cornell University and a member of NASA’s Voyager 1 team. </span> <span data-start-time='143708' data-end-time='158667'>She was able to make the discovery by examining data slowly sent back by Voyager 1 from about 23 billion kilometers away.</span> </p></div><div class='control-buttons-sticky' style='display:none;'><div class='control-buttons'><button title='Back' class='back' disabled='disabled'></button><button title='Play' class='play' disabled='disabled'></button><button title='Pause' class='pause' style='display:none;'></button><button title='Forward' class='forward' disabled='disabled'></button><button class='finished-reading' style='display:none;'>Done</button></div></div></div><div id='article-media'><div id='media-image'><img src='https://news-app-production.s3.amazonaws.com/articles/5085/C.jpeg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=17461 data-hint-location='60938' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/what_does_interstellar_mean.wav'>What does interstellar mean?</div><div class='choices' data-correct-choice='Between stars'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/between_stars.wav'><span>Between stars</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/inside_a_star.wav'><span>Inside a star</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/outside_a_black_hole.wav'><span>Outside a black hole</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/beyond_earths_atmosphere.wav'><span>Beyond Earth's atmosphere</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=17462 data-hint-location='14625' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/which_spacecraft_detected_the_hum.wav'>Which spacecraft detected the hum?</div><div class='choices' data-correct-choice='Voyager 1'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/voyager_1.wav'><span>Voyager 1</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/voyager_2.wav'><span>Voyager 2</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/the_eagle.wav'><span>The Eagle</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/curiosity_rover.wav'><span>Curiosity Rover</span></div></div></div><div class='sentence_completion_question question-container' data-question-id=17463 data-hint-location='84438' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/the_spacecraft_detected_the_waves_over_several_years_at_different__blank__frequencies.wav'>The spacecraft detected the waves over several years at different <span class='blank'>radio</span> frequencies.</div><div class='choices' data-correct-choice='radio'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/digital.wav'><span>digital</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/radio.wav'><span>radio</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/highpitched.wav'><span>high-pitched</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/5085/delta.wav'><span>delta</span></div></div></div><div class='question-buttons'><button class='skip-button'></button><button class='hint-button'></button><button class='speak-button'></button></div></div></div>
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