Fastest Celestial Body

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Messiah</i>
<br />Anybody know if any celestial objects traveling near 1M mph have been observed? And if not WHY NOT? . . . not talking about quarks or elemental particles - something moon sized.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">That exceeds escape velocity from the Galaxy. -|Tom|-

What about the particles from a supernova event? Some of the mass from those events could have a large mass and might be moving at a speed above the excape speed of the star at least if not the galaxy.

A disk of material spirals into a black hole and jets of material emerge perpendicular to the disk at speeds like 1/3 c. Maybe a maverik planet could hitch a ride on such a jet and stray into a solar system millions of lightyears away.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by tvanflandern</i>
<br /><blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Messiah</i>
<br />Anybody know if any celestial objects traveling near 1M mph have been observed? And if not WHY NOT? . . . not talking about quarks or elemental particles - something moon sized.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">That exceeds escape velocity from the Galaxy. -|Tom|-
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
Yes, given. But I assume our solar system, the planet Uranus and the mass of the sun would tend to affect the trajectory of such a body.

I've never heard of a celestial body moving at that speed. Wondered if someone knew of anything approaching 1M - or if not could cite a known fast moving object of substantial mass.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Messiah</i>
<br />I've never heard of a celestial body moving at that speed. Wondered if someone knew of anything approaching 1M - or if not could cite a known fast moving object of substantial mass.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">I can't cite any specifics. But there are a few very-high-velocity stars exceeding escape velocity from the Galaxy that are conjectured to have been former companions of stars that went supernova. Naturally, none of them are anywhere near our solar system. -|Tom|-

If a supernova event occured nearby in the last few million years would there be any evidence it happened? If SN event was 100ly from the solar system 10mya what would be around now to mark the event?