Asteroid mining is a potential trillion-dollar industry, but before any prospectors start fitting their mules for spacesuits, surveying is going to be more important than extraction. To help find out ...

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ANOTHER point was also very obvious to those who are familiar with these inquiries, namely, that if these prominences really consisted of gas, by the use of a powerful spectroscope it was perfectly ...

Learn about color and how to create a spectroscope using simple materials. What is color? Learn about light and wavelengths and what creates color in this episode of Camp GPB. Then learn how to build ...

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Amateur solar observing has an exciting new tool. The Lhires Lite spectroscope breaks sunlight into a rainbow of colors crossed by dark lines. For two centuries, professional astronomers have used ...

The fate of the universe hinges on the balance between matter and dark energy: the fundamental ingredient that drives its accelerating expansion. New results from the Dark Energy Spectroscopic ...

IX. NOW let me state to you how the discovery mentioned on p. 12 was finally established by Kirchhoff. In my notice of the spectroscope in the earlier articles, I had so much to say that there were ...