Do Rogue Planets Exist?

[willpittenger]

I think Earth would need more mass -- a least 2 Earth-masses more than what the real Earth has. <div class="Discussion_UserSignature"> <hr style="margin-top:0.5em;margin-bottom:0.5em" />Will Pittenger<hr style="margin-top:0.5em;margin-bottom:0.5em" />Add this user box to your Wikipedia User Page to show your support for the SDC forums: <div style="margin-left:1em">{{User:Will Pittenger/User Boxes/Space.com Account}}</div> </div>

 

[alokmohan]

Brown dwarfs are neglected study.

 

[MeteorWayne]

In fact, "stuff" further out in the solar system is much less likley to impact anything else (lower density) and when they do, the impacts are much more gentle since velocities are so low far from the sun. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[nexium]

Hi Andrew Brown: I presume we could confirm one rouge Jupiter mass and diameter with a cloud top temperature of 100 degrees k = -173 degrees c at a distance of 3 light years, but would any of the infra red searches to date, have a chance in a million of stumbling on to it, with recognition? Neil

 

[majornature]

Let's use our imagination here. I believe that every normal planet we know of been through a "rouge stage". <br /><br />Could it be possible that pluto can be a rouge planet? <div class="Discussion_UserSignature"> <font size="2" color="#14ea50"><strong><font size="1">We are born.  We live.  We experiment.  We rot.  We die.  and the whole process starts all over again!  Imagine That!</font><br /><br /><br /><img id="6e5c6b4c-0657-47dd-9476-1fbb47938264" style="width:176px;height:247px" src="http://sitelife.space.com/ver1.0/Content/images/store/14/4/6e5c6b4c-0657-47dd-9476-1fbb47938264.Large.jpg" alt="blog post photo" width="276" height="440" /><br /></strong></font> </div>

 

[derekmcd]

What would make you believe that? And, no; Pluto is not a rogue planet. Heck, it's not even a planet <img src="/images/icons/wink.gif" />. <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>

 

[derekmcd]

"<i>Planets farther out in the solar system might not be "incinerated," but I would expect them to be battered.</i>"<br /><br />The reason I say they would be incinerated is a star massive enough would initially expand into a red supergiant consuming any inner planets. When the supernova event occurs, it expels whatever remaining mass at speeds around 2-3km/s. At these speeds, pluto would be touched in as few as 2 days after the initial explosion. The temperatures exceed millions of degrees C. This expansion can last several thousand years, though cooling and slowing. The remnants of a supernova give way to the birth of new stars and planets as the shockwave compresses the interstellar medium.<br /><br />If a type 1a supernova can sometimes destroy its companion star, then certainly planets orbiting any type of supernova would be gone. <br /><br />I could be wrong. <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>

 

[alokmohan]

Formation of planets ha nothing to with supenova.

 

[rfoshaug]

However, as a digression, ancient supernovae are probably what created the heavier elements which today's planets are made of.<br /><br />But as you say, alokmohan, supernovae do not lead directly to planet formation. <div class="Discussion_UserSignature"> <p><font color="#ff9900">----------------------------------</font></p><p><font color="#ff9900">My minds have many opinions</font></p> </div>

 

[rfoshaug]

<blockquote><font class="small">In reply to:</font><hr /><p>Let's use our imagination here. I believe that every normal planet we know of been through a "rouge stage".<p><hr /></p></p></blockquote><br /><br />If Earth has been through a rouge stage (meaning it has at some point been "free floating" in deep space), how was it captured in orbit around the Sun, and why is that orbit so close to circular? And why are all major planets in our system more or less in the same orbital plane?<br /><br />The main theory on planet formation today states that the planets were formed from a disk of leftover material from when the Sun was formed. <div class="Discussion_UserSignature"> <p><font color="#ff9900">----------------------------------</font></p><p><font color="#ff9900">My minds have many opinions</font></p> </div>

 

[alokmohan]

An the disc theory is probably right ,at least no serious scientist disputes it.We may rule out rouge planet status for poor earth.

 

[nexium]

That is not mainsteam, but an interesting hypothesis. When our solar system was a molecular cloud with a diameter of perhaps 2 light years; rogue planets ejected from older solar system would sail into the cloud and be decelerated at least slighty by friction. Perhaps much of what became Earth is older than our Sun having been in the molecular cloud a million years before the Sun was even a faint red glow. Why not? Neil

 

[dragon04]

To me, "rouge planets" are not only possible, but also likely. We know that gravitational action can perturb objects in our own solar system to send them on a sunward trajectory.<br /><br />We also know that more then a few stars are being "ejected" from our home galaxy.<br /><br />If a star with more mass than the Sun should pass by closely enough, and with the proper velocity relative to the Sun, I see no reason why its gravitational influence couldn't pull a planet sized body away from our solar system.<br /><br />With a relatively high velocity, it would seem to me that it could "pull" matter away from the Sun without capturing it. All it takes is the tiniest bit of higher gravitational influence applied in the precise way at the precise time.<br /> <div class="Discussion_UserSignature"> <em>"2012.. Year of the Dragon!! Get on the Dragon Wagon!".</em> </div>

 

[willpittenger]

Which post did you intend ti you reply to? You replied to a post talking about supernovas destroying planets. Yet your post noted that supernovas don't <i>create</i> novas. <div class="Discussion_UserSignature"> <hr style="margin-top:0.5em;margin-bottom:0.5em" />Will Pittenger<hr style="margin-top:0.5em;margin-bottom:0.5em" />Add this user box to your Wikipedia User Page to show your support for the SDC forums: <div style="margin-left:1em">{{User:Will Pittenger/User Boxes/Space.com Account}}</div> </div>

 

[alokmohan]

We may not rule out.No evidence either way.

 

[MeteorWayne]

I just have to point out, most Rogue planets do not wear rouge.<br />It cuts into their mischievous image.<br /><img src="/images/icons/wink.gif" /><br /><br />MW <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[majornature]

It was just a thought. that's what scientist say. In my life as I learned it, Pluto will always be the nineth planet. So therefore it is a rouge. It stands out from the other planets.<br /><br />P.S. And I do know about the Kupier Belt Objects in space. <div class="Discussion_UserSignature"> <font size="2" color="#14ea50"><strong><font size="1">We are born.  We live.  We experiment.  We rot.  We die.  and the whole process starts all over again!  Imagine That!</font><br /><br /><br /><img id="6e5c6b4c-0657-47dd-9476-1fbb47938264" style="width:176px;height:247px" src="http://sitelife.space.com/ver1.0/Content/images/store/14/4/6e5c6b4c-0657-47dd-9476-1fbb47938264.Large.jpg" alt="blog post photo" width="276" height="440" /><br /></strong></font> </div>

 

[mithridates]

I see that the article on the brown dwarf was from January 2003. Wikipedia tells me there are actually two brown dwarfs:<br /><br />In January 2003, astronomers announced the discovery of a brown dwarf with a mass of 47 ± 10 Jupiter masses in orbit around Epsilon Indi at a distance of about 1500 AU. In August of 2003, astronomers discovered that this brown dwarf was actually a binary brown dwarf with a separation of about 2.5 AU. Both are of spectral class T; the larger brown dwarf has a mass of 47 ± 10 Jupiter masses, and the smaller 28 ± 7 Jupiter masses.[3][4]<br /><br /><br />Here's the source:<br /><br />http://www.spaceref.ca/news/viewpr.html?pid=12596 <div class="Discussion_UserSignature"> <p>----- </p><p>http://mithridates.blogspot.com</p> </div>

 

[majornature]

<font color="yellow"><b>The main theory on planet formation today states that the planets were formed from a disk of leftover material from when the Sun was formed. </b></font><br /><br />I agree with that statement. But that disk didn't form by itself. Gravity had to have played a major role in the circular orbit of these planets. <div class="Discussion_UserSignature"> <font size="2" color="#14ea50"><strong><font size="1">We are born.  We live.  We experiment.  We rot.  We die.  and the whole process starts all over again!  Imagine That!</font><br /><br /><br /><img id="6e5c6b4c-0657-47dd-9476-1fbb47938264" style="width:176px;height:247px" src="http://sitelife.space.com/ver1.0/Content/images/store/14/4/6e5c6b4c-0657-47dd-9476-1fbb47938264.Large.jpg" alt="blog post photo" width="276" height="440" /><br /></strong></font> </div>

 

[MeteorWayne]

Epsilon Indi is about 11.8 LY away,<br /><br />That's about 746,000 AU. <br /><br />"The projected separation as seen on the sky <b> between Epsilon Indi and Indi Ba </b> is approximately 1500 AUs.<br /><br />Just so there's no confusion.<br />MW <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[agnau]

Do we have evidence that a collapsing/cooling nova does not lead to the formation of the stellar disk and therefore planetary masses?

 

[derekmcd]

Actually, quite opposite. Supernovae and their shockwave can trigger star formation. As the shockwave expands outward, it compresses the interstellar clouds or other nebula. <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>

 

[Mee_n_Mac]

I recall some discussion on the matter of comets coming in from outside our solar system (ie - not from the Oort cloud). I don't remember if this was stated as fact or just conjecture. But if we've seen some proof of comets of extra-solar origin then that would tend to indicate the rogue planets also exist. Can someone comment on comets ? <div class="Discussion_UserSignature"> <p>-----------------------------------------------------</p><p><font color="#ff0000">Ask not what your Forum Software can do do on you,</font></p><p><font color="#ff0000">Ask it to, please for the love of all that's Holy, <strong>STOP</strong> !</font></p> </div>

 

[MeteorWayne]

There is no proof that any comets have come from outside the solar system.<br />It is not impossible, but VERY unlikely. Space is VERY big <img src="/images/icons/smile.gif" /><br />All comets detected so far (in the last few millennia) have had trajectories that were within the error bars of being on a elliptical solar orbit.<br /><br />Meteor Wayne <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>