How do we study the stars? - Yuan-Sen Ting
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Our best technology can send men to the Moon and probes to the edge of our solar system, but these distances are vanishingly small compared to the size of the universe. How then can we learn about the galaxies beyond our own? Yuan-Sen Ting takes us into deep space to show how astronomers study the stars beyond our reach.
Additional Resources for you to Explore
Read how can be used to study the composition of stars, and to obtain the temperature of stars. Plasma in hotter stars moves more vigorously. This vigorous movement broadens the features in spectra due to the Doppler Effect. Visit this interactive applet and watch this tutorial for more information!
The following are some of the cutting-edge telescopes in different wavelengths. Click on the link for each and find lots of information about the science that is being done using these telescopes. To get an idea of how things seen through each of these telescopes vary, check out the Crab Nebula in different wavelengths. Wow!
Radio/Sub-millimeter:
• Planck
• Very Large Array
• ALMA
Infrared:
• Herschel Space Observatory
• Spitzer Space Telescope
Optical:
• Hubble Telescope
• Gemini Telescope
Ultraviolet:
• FUSE
• GALEX
X-ray:
• Chandra X-ray Observatory
• XMM-Newton
The following are some of the cutting-edge telescopes in different wavelengths. Click on the link for each and find lots of information about the science that is being done using these telescopes. To get an idea of how things seen through each of these telescopes vary, check out the Crab Nebula in different wavelengths. Wow!
Radio/Sub-millimeter:
• Planck
• Very Large Array
• ALMA
Infrared:
• Herschel Space Observatory
• Spitzer Space Telescope
Optical:
• Hubble Telescope
• Gemini Telescope
Ultraviolet:
• FUSE
• GALEX
X-ray:
• Chandra X-ray Observatory
• XMM-Newton
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Astronomers estimate that the universe has about 100 billions of galaxies, each of which has abou...
Google Olbers' paradox for an idea.
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