The Milky Way's Many Faces

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Күн бұрын

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This is part of my complete intro Astronomy class that I taught at Willam Paterson University and CUNY Hunter. If you want to watch all the videos in the correct order, please visit my website at www.jasonkendall.com
The Milky Way can be seen in many wavelengths. Here we review their various features.
Supplement the videos with "OpenStax Astronomy"
openstax.org/books/astronomy/..." target="_blank
25 The Milky Way Galaxy
0:00 Introduction
2:57 The Milky Way, our Galaxy
4:58 What are Galaxies?
5:36 Full-sky views of the Milky Way
6:19 All-sky Milky Way in Optical light
7:57 All-sky Milky Way in H-alpha
10:45 AKARI InfraRed Camera JAXA
11:20 All-Sky Milky Way in Infrared by WISE
12:47 All-sky Milky Way in Hydrogeri emission 2lem
13:43 All-sky Image of Microwave Emission due to CO
15:17 All-sky Image of Microwave Emission (Planck)
16:06 Mapping the Milky Way's Gas and Dust
16:18 All Sky Milky Way in Radio
17:21 X-Ray Survey by RXTE
18:06 All sky Milky Way in X-Ray
18:39 All Sky Milky Way in gamma rays
20:35 New Discovery
23:04 M31 on APOD (2009, May 10)
23:11 Spitzer IR Telescope: M31
26:08 NGC 891: A Milky Way Analogue
28:49 REVIEW QUESTIONS

Пікірлер: 11

@MDSBock Жыл бұрын

Well done on a comprehensive explanation on the different views of the Milky Way n spiral galaxies, I really enjoyed it.

@JasonKendallAstronomer Жыл бұрын

Glad you enjoyed it!

@hank1519 6 жыл бұрын

Great job, Jason!

@warpdriveby Жыл бұрын

Does the pattern of light and dark patches truly "never" change? With the fact that star velocity is not strongly tied to distance and that they also orbit each other, stars like the Sun take pretty complex "paths" around the core. It would have to change over tens of millions of years right?

@JasonKendallAstronomer Жыл бұрын

That’s correct. It would take that long. But then the change would be folded in with the Sun’s motion around the Galaxy, and the cloud’s evolution through Star formation.

@warpdriveby Жыл бұрын

@@JasonKendallAstronomer Awesome, Thank you for answering! I haven't found an answer to another question, so hopefully you know it, if I could ask for it, please? Here goes: How stable is the Sun's orbit of the galactic centre of mass, both in inclination to the galactic disk, and in the severity of it's elliptical shape? I see the statement: "The sun moves up and down through the galactic disk as it orbits" as if it would look like a loop of sine waves. I had thought it meant the Sun's path was analogous to Pluto's, to grossly oversimplify. What would one or two orbits look like if drawn over a top down, and an edge on view of the galaxy?

@hank1519 6 жыл бұрын

Jason, when did we discover that there are galaxies outside of our own?

@JasonKendallAstronomer 6 жыл бұрын

Well, it can be thought that the "Spiral Nebulae" that the Earl of Rosse found with his big scope could be thought of as that. However, we could have also thought that Charles Messier and his contemporaries could think that. But the real discovery that Things Are Far comes from Edwin Hubble's discovery of Cepheids in M31 in 1923. That's the subject of my recent blast of videos: "The Great Distance Problem" I go through the whole history. look here: kzfaq.info/get/bejne/ZrhpZNqBxpisdXU.html

@hank1519 6 жыл бұрын

Jason Kendall Thanks for your answer and the link!