Chemistry in Space - Where's the Water?

Описание: The water on Earth is older than the sun and solar system itself! Can you believe it? How do we know?

This month's SMAP explores the debate on the origin of water on Earth, as well as on other planets in our own solar system and beyond. Asteroids and comets, you say? You may be surprised.

Weigh the evidence using actual spectroscopic data from the ALMA radio telescope array comparing normal water and heavy water and you will discover that the water on Earth is actually older than our solar system.

In the written tutorial for Where's the Water, students are provided step-by-step instructions to access actual spectroscopic data from the ALMA telescope array to search for signatures from water. The lesson and PowerPoint presentation can be found here; https://bit.ly/SMAPSelectedLessons.

Educators, subscribe to SMAP on YouTube for our full array of past and future lessons and SMAP Live broadcasts. Grade 8-12 students can register for monthly SMAP Zoom presentations at any time; https://bit.ly/SMAPPurdue.

Thank you, Purdue Physics and Astronomy Professor Merel van 't Hoff for this SMAP Live presentation.

Timeline
0:00 Our host for the day, graduate researcher, Mariana Aguilar
3:25 70% on the Earth's surface; only 0.02% by mass!
5:05 How and where do planets form?
10:25 How we observe water in space - emission spectroscopy
17:04 Interpreting the emission spectra
19:52 JWST and ALMA measuring infrared and microwave data
22:24 Heavy water and clues to where Earth's water comes from
26:45 Interpreting data from ALMA
29:18 Breakout room activity recap
35:55 Incorporating water in Earth's formation - the ice line
41:31 Summarizing the theories

Thanks to Jonathan Sullivan-Wood for creating the thumbnail for this video.