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Episode 543: What Are Light Echoes? Using Reflections Of Light To See Even Further Back In Time
When we look outward into space, we’re looking backwards in time. That’s because light moves, at the speed of light. It takes time for the light to reach us.
But it gets even stranger than that. Light can be absorbed, reflected, and re-emitted by gas and dust, giving us a second look.
They’re called light echoes, and allow astronomers another way to understand the Universe around us.
Audio Podcast version:
ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
RSS: https://www.universetoday.com/audio
What Fraser's Watching Playlist:
https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G
Weekly email newsletter:
https://www.universetoday.com/newsletter
Support us at: http://www.patreon.com/universetoday
More stories at: http://www.universetoday.com/
Twitch: https://twitch.tv/fcain
Follow us on Twitter: @universetoday
Like us on Facebook: https://www.facebook.com/universetoday
Instagram - http://instagram.com/universetoday
Team: Fraser Cain - @fcain / [email protected]
Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
Chad Weber - [email protected]
References:
https://www.nasa.gov/feature/jpl/arecibo-radar-returns-with-asteroid-phaethon-images
https://www.nasa.gov/mission_pages/LRO/multimedia/lroimages/lroc-20100413-apollo15-LRRR.html
https://www.spacetelescope.org/videos/heic0617a/
https://www.nasa.gov/feature/jpl/light-echoes-give-clues-to-protoplanetary-disk
https://www.nasa.gov/feature/goddard/2019/nasa-s-nicer-mission-maps-light-echoes-of-new-black-hole
https://hubblesite.org/contents/news-releases/2017/news-2017-42.html
https://www.eso.org/public/images/potw1814a/
Support Universe Today Podcast
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By Fraser Cain
4.7
518518 ratings
When we look outward into space, we’re looking backwards in time. That’s because light moves, at the speed of light. It takes time for the light to reach us.
But it gets even stranger than that. Light can be absorbed, reflected, and re-emitted by gas and dust, giving us a second look.
They’re called light echoes, and allow astronomers another way to understand the Universe around us.
Audio Podcast version:
ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2
RSS: https://www.universetoday.com/audio
What Fraser's Watching Playlist:
https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G
Weekly email newsletter:
https://www.universetoday.com/newsletter
Support us at: http://www.patreon.com/universetoday
More stories at: http://www.universetoday.com/
Twitch: https://twitch.tv/fcain
Follow us on Twitter: @universetoday
Like us on Facebook: https://www.facebook.com/universetoday
Instagram - http://instagram.com/universetoday
Team: Fraser Cain - @fcain / [email protected]
Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw
Chad Weber - [email protected]
References:
https://www.nasa.gov/feature/jpl/arecibo-radar-returns-with-asteroid-phaethon-images
https://www.nasa.gov/mission_pages/LRO/multimedia/lroimages/lroc-20100413-apollo15-LRRR.html
https://www.spacetelescope.org/videos/heic0617a/
https://www.nasa.gov/feature/jpl/light-echoes-give-clues-to-protoplanetary-disk
https://www.nasa.gov/feature/goddard/2019/nasa-s-nicer-mission-maps-light-echoes-of-new-black-hole
https://hubblesite.org/contents/news-releases/2017/news-2017-42.html
https://www.eso.org/public/images/potw1814a/
Support Universe Today Podcast
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