4 ms·
With a molten core I'd be surprised if the earth didn't emit it's own light.
by Cd00d 5y ago
With a molten core I'd be surprised if the earth didn't emit it's own light.
- vecter 5y agoAnything with a positive temperature radiates photons. The Earth probably does in the infrared spectrum.
- perardi 5y agoHaha, it would be a shock if it didn’t. That whole “black body radiation” thing. And we are imaging the Earth in infrared. Well, infrared from non-geologic sources, but oh man are we sure imaging in infrared. https://en.wikipedia.org/wiki/Suomi_NPP https://en.wikipedia.org/wiki/Suomi_NPP
- at_a_remove 5y agoPrecisely why I said "(okay, if you are near enough, shielded from the Sun, and looking in infrared, if you like splitting hairs)" ...