photoelectric effect Archives

Pop quiz. How did Einstein win his Nobel prize? Was it for relativity? Nope, Einstein won the Nobel Prize in 1921 for the discovery of the photoelectric effect; how electrons are emitted from atoms when they absorb photons of light. But what is it? Let’s find out.
Continue reading “Astronomy Cast Ep. 335: Photoelectric Effect”

Universe Today Podcast

Universe Today podcasts with Fraser Cain

The Guide to Space is a series of space and astronomy poddcasts by Fraser Cain, publisher of Universe Today

Whenever I talk about the search for life in the Universe and its emphasis on water, I get comments that scientists aren’t being creative enough. Why does life rely on water? Couldn’t there be lifeforms which are completely different from life on Earth? Isn’t that the textbook definition of alien?

Astrobiologists have only scratched the surface in their search for life in the Universe, and they’re going after the low-hanging fruit. Since life on Earth can be found wherever there’s water, why not check out the water on other worlds? If that doesn’t pan out, then they’ll expand the search.

But it’s possible there are aliens living right here on Earth among us, in a shadow biosphere, we just haven’t detected them yet.

Thumbnail credit:

http://blogs.esa.int/caves/2019/09/11/a-new-journey-into-earth-for-space-exploration/

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