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foreign

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[Music]

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this is an object called

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v838 monoceratus or v838 Mon and it's a

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series of images of the same object that

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are taken over about a half a year or so

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in 2002.

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so we see the central object here is the

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same in each of the four Images but what

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is immediately apparent is that there's

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a expanding brightness around it so what

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was first thought would be that wow

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we've got this gas cloud that is just

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spewing away from this object but it was

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spewing away an incredibly fast speeds

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what is actually happening here instead

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of that gas itself being in motion and

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causing that expansion is something

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called a light Echo so just like you

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hear an echo with sound waves as some

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sound waves come directly towards you

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you hear the main source of sound but

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then as others bounce off walls and come

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to you a little bit later that's where

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the echo comes from the same thing is

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happening with light in this image we're

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seeing some of that light coming

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directly towards us we're receiving that

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at the time that we receive it but some

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of the rest of the light is actually

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bouncing off material around that binary

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in the center it bounces off it and then

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it comes to us that's the light Echo and

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so each one of those succeeding images

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where we see this shell further and

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further from the center is actually that

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light Echo coming to us later in time so

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we're actually basically taking a CAT

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scan of the material around that Central

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Star there's still a lot of mystery

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surrounding where that material came

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from is it being blown off by these hot

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young energetic stars as a process of

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their star formation

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one of the coolest possibilities is that

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one of these Stars actually engulfed a

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giant planet in its orbit it's like a

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giant planet like many times the mass of

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Jupiter could be in orbit very close to

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this very hot large star and the tidal

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forces and the energy dissipation could

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have been acting on it in such a way

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that that now massive planet is losing

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energy spinning more rapidly and closer

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to one of those stars and eventually

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gets engulfed in an explosive event

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could have been a large planet could

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have been a small star in that system we

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don't know what the mass of that

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Intruder was that that interloper that

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caused this explosive event but it is

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very likely that it was something in the

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neighborhood of that binary system that

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just got too close to one of those Stars