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foreign

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[Music]

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this is an image of the Crab Nebula

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which is one of the most famous and most

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well-studied astronomical objects ever

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and it's one of the Touchstone images

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from the Hubble Space Telescope

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it's just the most beautiful

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awe-inspiring image you can imagine

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technically it's actually called a

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pulsar wind nebula and we can connect it

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to events in history going back to the

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year 1054 where Chinese astronomers

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recorded the appearance of one new star

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which they called a guest star that got

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incredibly bright that you could see it

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during the daytime which we now know was

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a supernova explosion that was visible

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to the naked eye during the day for

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what we're seeing here this filamentary

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structure is actually density variations

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in that material so as that material was

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spewed from the star in the Supernova

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explosion it's still got the

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Fingerprints of that explosion it's

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still expanding out into the surrounding

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medium so what we're able to see are

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knots of material made up of things like

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oxygen sulfur and in this full color

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image the oxygen is coming out

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separately from The sulfur where the the

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greenish yellowish tinge is really

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oxygen heavy

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is the Pulsar at the center and it's

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very energetic so it's it's spewing out

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energy at all wavelengths actually and

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some of that energy is being captured by

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the material surrounding the pulsar and

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then that material glows and it glows in

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a certain wavelength or color depending

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on what it's made of so all the material

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that we're seeing here is actually from

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the Star itself it's it's been blown out

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in that Supernova explosion

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but it's being illuminated by the Pulsar

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in the center

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oxygen is such an important element of

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life on the planet Earth we are

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breathing in oxygen as we speak where

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did that oxygen come from

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came from the hearts of stars they made

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the oxygen infusion and they expelled it

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back into the interstellar medium we're

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actually watching that happen here maybe

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someday there will be a planet there

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with an atmosphere that includes oxygen