I give a brief history of finding planets around other stars, including discovery by gravitational wobbling, dimming as the planet crosses in front of its star, and even seeing an actual planetary image by blocking the star's glare. I discuss what sort of spectroscopic signals might be present for life in a planet's atmosphere. Finally I offer some planets already detected whose temperatures appear to be in the range of terrestrial life, and what's in their atmospheres. Support the show Supp...
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I give a brief history of finding planets around other stars, including discovery by gravitational wobbling, dimming as the planet crosses in front of its star, and even seeing an actual planetary image by blocking the star's glare. I discuss what sort of spectroscopic signals might be present for life in a planet's atmosphere. Finally I offer some planets already detected whose temperatures appear to be in the range of terrestrial life, and what's in their atmospheres. Support the show Supp...
While outdoor solar cells make big news, there is a quiet revolution also for solar cells that make do with far less illumination, indoor lighting. We discuss requirements for such photovoltaic cells, matching their sensitivity to various kinds of indoor lamps, and such developments in the last couple of decades. We discuss research into various materials for these low-light panels. Finally, we shift gears and learn about new batteries that work inside bodies, using the body fluids as electro...
The History of Chemistry
I give a brief history of finding planets around other stars, including discovery by gravitational wobbling, dimming as the planet crosses in front of its star, and even seeing an actual planetary image by blocking the star's glare. I discuss what sort of spectroscopic signals might be present for life in a planet's atmosphere. Finally I offer some planets already detected whose temperatures appear to be in the range of terrestrial life, and what's in their atmospheres. Support the show Supp...
