No, nothing hit the sun, I was just wondering -- After watching Broly the Second coming (dbz) I started thinking, what would happen if something 100,000 feet all the way around hit the sun and went straight through it ; Would there be any effects on the sun or orbits?

Speed: I need a speed calculation - Whatever hits the sun goes from the earth to the sun in 27 seconds -- How fast is it going?

What you do is take this info : : Goes From Earth to sun in 27 seconds ; Goes through sun in 6 seconds : : How fast is it going, what does it do and does it slow down or speed up while goin through the sun (percentages and speed)

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Same old Bad Astro forum so many years gone... and I wouldn't have it any other way!

roughly 16x the speed of light, I think.

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Hwæt! We Gardena in geardagum,
þeodcyninga, þrym gefrunon,
hu ða æþelingas ellen fremedon.

Next time answer the whole question please...

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Same old Bad Astro forum so many years gone... and I wouldn't have it any other way!

No.

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Hwæt! We Gardena in geardagum,
þeodcyninga, þrym gefrunon,
hu ða æþelingas ellen fremedon.

An object that small probably wouldn't have any significant effect on the Sun at all (which is 800,000 miles in diameter, and made of gas, so it's not like the impact would do anything). Most objects would accelerate as they got closer, due to the Sun's gravitational attraction, but since this object is already moving at 16 times the speed of light (as Musashi pointed out), it's clear we can't be dealing with a real object. Since it's already violating one law of physics, who's to say whether it will obey others?

define pass through the sun



because anything near the center of the sun wouldn't last long. the high pressure there creates densities higher than any metal we know of. it would hit and stop or bounce off. if it stayed long enough it would succomb to fusion and not be the same object.


if it passed through the sun but at an angle from the center, it would probably be deflected quite a bit.



only thing I can think of that could pass through the sun is a neutrino. some would hypothesize gravitron, but that's not real to us.

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"I will do my best to understand and explain the universe from big to small without invoking miracles, unrepeatable events, or divine intervention. In place of those things I will use observations, mathematics, and science."


-Cross
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Some of my Astrophotography


Those that lack education have a hard time understanding its value. - Cross

ops:

that discludes accelleration

__________________
"I will do my best to understand and explain the universe from big to small without invoking miracles, unrepeatable events, or divine intervention. In place of those things I will use observations, mathematics, and science."


-Cross
My travel blog

Some of my Astrophotography


Those that lack education have a hard time understanding its value. - Cross

Edited to make calculations slightly more accurate, and note that yaohua has deleted this post. I don't know why, because that is in fact rather close to the correct value.(assuming I haven't botched it).
Edited again to change "beta to ß"
As yaohua has just pointed out (indirectly), our hypothetical object can get there in 27 seconds of it's time.
gamma has to be 18.25
so sqrt(1-ß^2) has to be 1/18.25
(1-ß^2)=1/333.0625
so ß^2=332.0625/333.0625
and ß=.996998
That is, your object will be travelling at .996998 of the speed of light. from our point of view

The sun has diameter roughly 4.6 light seconds. since we are working in the particles reference frame, (we can't switch half way, otherwise it was meaningless to say it travelled to the sun in 27 seconds.
6*ß=4.6 so
ß=4.6/6=.7667
Travels through the sun with an average velocity of .7667c
I would lay money that this is substantially faster than the speed of light in the sun, and your particle will emit masses of energy as cerenkov radiation.(maybe that's why it slows down). But the idea of something travelling through the sun (other than, as has been suggested, a neutrino or some other particle that's not fond of interacting- but if it's one of them, why does it slow down?) like this is just silly.

PS sorry about the mess the maths is in. I don't know how to do math symbols in BBcode (or even if it can be done). If this is incomprehensible, say so and i will fix it (or try).

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"Last Thursday, in a major breakthrough for the science of astrology, everyone born under the sign of scorpio was run over by milk trucks...."

As Musashi and Grey have pointed out....absolutlely nothing can be observed going at those speeds. At the speed of light, the object would have some much energy and mass, it would blow the Sun to smithereens.

It might be worth stating the object would not be from our solar system. IIRC, no object has been found in our solar system which has come from outside our solar system. [Hopefully, I am wrong on this.]

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Lighten up! This is a stellar board!

There have been calculations and simulations for star collisions. A white dwarf on a head on collision course with our sun would, due to its high density, pass through the sun mostly unchanged. The sun however would be dispersed, an event that would probably upset many people.

JFYI about using symbols in posts:

this lists symbols you can use by just pressing ALT and the number:
example hold ALT + press: 0-1-9-8 gives: Æ

There are more symbols than the ones in that list: when dropping the leading zero, you get other symbols. Like ¬ ┤ ╦ ▓

Maybe someone could bother to create (or find) a complete list of all symbols we can use and their corrseponding alt code?

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To the regular visitor of internet bulletin boards it is clear that it's an excellent idea your parents get to choose your real name.

Sorry for being dense, sock puppet, by how did you get that value of gamma. Using, Lorentz,

tp = yt

Where tp is the proper time, y is the Lorentz factor, t is the time as well observe it. We only know the proper time. Did you ue Lorentz contraction to get it.

[how do you use subscript?]

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To the regular visitor of internet bulletin boards it is clear that it's an excellent idea your parents get to choose your real name.

we get radiation every second from other stars and galaxies





we also get debris from xtra-solar locations. [-X

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"I will do my best to understand and explain the universe from big to small without invoking miracles, unrepeatable events, or divine intervention. In place of those things I will use observations, mathematics, and science."


-Cross
My travel blog

Some of my Astrophotography


Those that lack education have a hard time understanding its value. - Cross

www.unicode.org

Or just use the key-caps application.

Just fire up Character Map in Programs>Accesories>System Tools.

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When I am done here I think I will go create something from metal.

Before HTML was disallowed, you could use the tags, but BBcode doesn't have a provision for superscripts and subscripts. I just use the small font size for subscripts.

Cool. What color radiation is it really? :wink:

But has any been observed?

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Lighten up! This is a stellar board!

it's mostly in black and white, but we see blue/red/yellow stars.



There are some very long period comets (thousands of years) that have been witnessed. they travel beyond our solarsystem each orbit.


I can say without any doubt in my mind that objects from other solar systems enter ours.

__________________
"I will do my best to understand and explain the universe from big to small without invoking miracles, unrepeatable events, or divine intervention. In place of those things I will use observations, mathematics, and science."


-Cross
My travel blog

Some of my Astrophotography


Those that lack education have a hard time understanding its value. - Cross

Are you refering to KBOs or Oort cloud comets?

Comets from beyond the Oort cloud should have velocities higher than expected. I do not belive any have been found....yet.

That's a safe bet. I'm just curious if any object (bigger than a bread basket) has ever been detected.

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Lighten up! This is a stellar board!

Apologies for the delay in my reply. (Been very busy). I took it that since an object could not get from earth to sun in 27 seconds in our reference frame, I might as well do the math for such a journey in it's reference frame. As you point out, tp = yt

I am using two reference frames here: the particle, and the solar system (and just to be lazy ignored any movement of for example, earth around sun)
Working in the reference frame of the particle, t is the travel time of 27 seconds. If the velocity of the object is such that it has sufficient time dilation to make the journey in 27 seconds, it may as well be c in our reference frame (as far as calculating travel time that we observe).
In our reference frame this gives us a velocity of c and a distance of 500c*s to be covered in 27 seconds (from the particle's reference frame).
This means the particle must observe 27s while we observe 500s, i.e. it must experience y=500/27=18.52 relative to us. (not 18.25, which I would have noted earlier had I not been so lazy).

Nicolas: thank you very much for the info.
Tee hee hee. Now I can do this! ßßßßßßßßßßßßßßßßßßßßßßß
I'll edit my earlier post to make it neater (replace beta with ß, etc) now.

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"Last Thursday, in a major breakthrough for the science of astrology, everyone born under the sign of scorpio was run over by milk trucks...."

Actually that's that extra German letter. You want β.

Ahh, so it was a simplifying assumption.

Yup. Simple*. That pretty much sums me up.

I did think it looked funny. It's close enough, though.

*Simplification of "one who simplifies frequently"

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"Last Thursday, in a major breakthrough for the science of astrology, everyone born under the sign of scorpio was run over by milk trucks...."