Witnessing a neutron star violently crash into another has helped astronomers uncover secrets of the universe including how gold was created. Neutron stars are the collapsed centers of stars. These two neutron stars circled each other at a very fast rate, getting closer and closer. Then they crashed into each other in an event called a kilonova. This collision created a burst of gamma rays, or electromagnetic energy, and gravitational waves, which make a weak signal when they reach Earth. Vicky Kalogera is an astrophysicist with Northwestern University near Chicago. She explains what the astronomers heard and saw two months ago. So this is the first time that we hear the death spiral of two neutron stars. And we also see the fireworks that came from the final merger. What they saw was a bright, blue light.
Title: Scientists Strike Gold With Cosmic Crash
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/2175/cosmix_crash.m4a' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='Scientists Strike Gold With Cosmic Crash' data-article-id='2692'><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='15958'>Witnessing a neutron star violently crash into another has helped astronomers uncover secrets of the universe including how gold was created.</span> <span data-start-time='15958' data-end-time='22167'>Neutron stars are the collapsed centers of stars.</span> <span data-start-time='22167' data-end-time='31667'>These two neutron stars circled each other at a very fast rate, getting closer and closer.</span> <span data-start-time='31667' data-end-time='38854'>Then they crashed into each other in an event called a kilonova.</span> <span data-start-time='38854' data-end-time='54396'>This collision created a burst of gamma rays, or electromagnetic energy, and gravitational waves, which make a weak signal when they reach Earth.</span> <span data-start-time='54396' data-end-time='62250'>Vicky Kalogera is an astrophysicist with Northwestern University near Chicago.</span> <span data-start-time='62250' data-end-time='69708'>She explains what the astronomers heard and saw two months ago.</span> <span data-start-time='69708' data-end-time='75208'>So this is the first time that we hear the death spiral of two neutron stars. </span> <span data-start-time='75208' data-end-time='79500'>And we also see the fireworks that came from the final merger.</span> <span data-start-time='79500' data-end-time='83229'>What they saw was a bright, blue light.</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/2175/cosmic_crash.jpg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=9579 data-hint-location='69708' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/what_does_spiral_mean.m4a'>What does spiral mean?</div><div class='choices' data-correct-choice='curving line'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/curving_line.m4a'><span>curving line</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/outer_space.m4a'><span>outer space</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/star_explosion.m4a'><span>star explosion</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/blue_light.m4a'><span>blue light</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=9580 data-hint-location='31667' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/what_did_the_two_stars_do.m4a'>What did the two stars do?</div><div class='choices' data-correct-choice='crash into each other'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/circled_faster.m4a'><span>circled faster</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/crash_into_each_other.m4a'><span>crash into each other</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/make_a_planet.m4a'><span>make a planet</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/create_new_energey.m4a'><span>create new energey</span></div></div></div><div class='sentence_completion_question question-container' data-question-id=9581 data-hint-location='15958' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/neutron_stars_are_the__blank__centers_of_stars.m4a'>Neutron stars are the <span class='blank'>collapsed</span> centers of stars.</div><div class='choices' data-correct-choice='collapsed'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/empty.m4a'><span>empty</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/bright_blue.m4a'><span>bright blue</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/collapsed.m4a'><span>collapsed</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2175/creamy.m4a'><span>creamy</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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