Where is helium found on Earth?
How does helium get placed in tanks? Is helium mined and then separated? rrichard w sabaka Answer 1: Helium is a gas, but there are small amounts of it that are trapped within the rocks of the Earth. During volcanic eruptions, some of this helium is spewed into the atmosphere, where it accumulates. The helium that is in the atmosphere today has accumulated for billions of years. Even so, the amount of helium in the atmosphere is quite small: only about 0.005 percent of the atmosphere is helium. (Most of the atmosphere is nitrogen–78 percent–and oxygen–21 percent.) I don’t think that helium is “mined,” that is, taken directly from rocks in the Earth. I think the helium you buy in tanks is separated from the other atmospheric gases. (I’m not certain about this, however.) -Grant Answer 2: This information should be available in an encyclopedia. I’ll tell you what I have heard about it and then you can read to find out which is correct — I’ll check it out too, for my own sake. My under
Even when ionized, helium manages to retain an electron. This etches the light from the quasar with a “forest” of spectral absorption features. Because the universe is expanding, these absorption features are found at many different wavelengths depending on the distances of the intergalactic clouds from Earth.
