Jump to content
House Price Crash Forum

Archived

This topic is now archived and is closed to further replies.

interestrateripoff

Scientists Discover Lonely Planet Without A Companion Star

Recommended Posts

http://www.independent.co.uk/news/science/scientists-discover-lonely-planet-without-a-companion-star-8871257.html

A lonely planet floating through space without a companion star has been discovered by an international team of astronomers who said that it is the first planet to be found without a sun.

The cold, dark planet is about six times the mass of Jupiter – a “gas giant” planet – and is estimated to have formed just 12 million years ago, making it a mere infant in astronomical terms.

Known by its code name, PSO J318.5-22, it was discovered about 80 light years away from Earth by scientists analysing data from the Pan-STARRS 1 telescope sited on top of the Haleakala volcanic mountain on the island of Maui in Hawaii.

I wonder how many more they'll end up finding?

Share this post


Link to post
Share on other sites

http://www.independe...ar-8871257.html

I wonder how many more they'll end up finding?

"It has all the characteristics of young planets found around other stars, but it is drifting out there all alone. I had often wondered if such solitary objects exist, and now we know they do."

just what characteristics does one discern from 80 light years away...the article I read even had a photo..

Share this post


Link to post
Share on other sites

"It has all the characteristics of young planets found around other stars, but it is drifting out there all alone. I had often wondered if such solitary objects exist, and now we know they do."

just what characteristics does one discern from 80 light years away...the article I read even had a photo..

I always thought that they were only able to detect distant planets by the wobble that they made around their star - so would be interested how they detected this in the blackness of space.

Fascinating how this formed though.

We used to think that planets only formed around stars where the gravitional field of the stars turned drifting gases into heavy elements and then those 'rocks' into planets. So how something like this was created is fascinating.

Did our sun, or another star, create it - as we have seen with the Voayger probes the gravitional affects of our own sun goes much further out than we ever imagined. But 80 million light years? Did such a planet get created around a star and then was flung out on a journey in some way? Or perhaps the rotating milky way created the planet?

Fascinating stuff. Even more fascinating is the idea that the universe might be filled with such things.

Then there is the whole issue of life? Are these cold, dark lifeless lumps of rock and ice? Or will life find a way?

Share this post


Link to post
Share on other sites

I always thought that they were only able to detect distant planets by the wobble that they made around their star - so would be interested how they detected this in the blackness of space.

Fascinating how this formed though.

We used to think that planets only formed around stars where the gravitional field of the stars turned drifting gases into heavy elements and then those 'rocks' into planets. So how something like this was created is fascinating.

Did our sun, or another star, create it - as we have seen with the Voayger probes the gravitional affects of our own sun goes much further out than we ever imagined. But 80 million light years? Did such a planet get created around a star and then was flung out on a journey in some way? Or perhaps the rotating milky way created the planet?

Fascinating stuff. Even more fascinating is the idea that the universe might be filled with such things.

Then there is the whole issue of life? Are these cold, dark lifeless lumps of rock and ice? Or will life find a way?

I think they have found MoonBase Alpha.....

Share this post


Link to post
Share on other sites

I always thought that they were only able to detect distant planets by the wobble that they made around their star - so would be interested how they detected this in the blackness of space.

Wobbles are only one way of detecting planets. Lots are now being detected from the small amount of light they block out when they pass in front of the star they orbit. In this case that obviously won't work either but being a young, massive planet it's probably still fairly warm and might therefore be detectable in infra-red, particularly as there's no star nearby to drown out the signal.

Fascinating how this formed though.

We used to think that planets only formed around stars where the gravitional field of the stars turned drifting gases into heavy elements and then those 'rocks' into planets. So how something like this was created is fascinating.

Did our sun, or another star, create it - as we have seen with the Voayger probes the gravitional affects of our own sun goes much further out than we ever imagined. But 80 million light years? Did such a planet get created around a star and then was flung out on a journey in some way? Or perhaps the rotating milky way created the planet?

Flung out is probably the most likely explanation although I suppose if large clouds of gas and dust can collapse to form stars then smaller ones might collapse and form planets directly, if there's not enough mass for fusion to start.

Fascinating stuff. Even more fascinating is the idea that the universe might be filled with such things.

Then there is the whole issue of life? Are these cold, dark lifeless lumps of rock and ice? Or will life find a way?

Doesn't seem likely but it's not impossible. If it's got any moons then a Europa-like sub-surface ocean could exist, driven by tidal heat.

Share this post


Link to post
Share on other sites

6x the size of Jupiter puts in at or near Brown Dwarf size so basically it is a failed star rather than a planet.

It's squarely in the 'Endless Astronomy Message Board Flame War' category.

Share this post


Link to post
Share on other sites

6x the size of Jupiter puts in at or near Brown Dwarf size so basically it is a failed star rather than a planet.

That makes me sad, and I am only a part time astronomer! :huh:

Share this post


Link to post
Share on other sites

6x the size of Jupiter puts in at or near Brown Dwarf size so basically it is a failed star rather than a planet.

must be planet X-factor

Share this post


Link to post
Share on other sites

Destined for B movies or porn

You might have already seen me, In "Disciples of the planet of Filth" ;)

Obviously, my head doesn't get into the picture! :huh:

Share this post


Link to post
Share on other sites

Flung out is probably the most likely explanation although I suppose if large clouds of gas and dust can collapse to form stars then smaller ones might collapse and form planets directly, if there's not enough mass for fusion to start.

Yes, I was wondering if it was perhaps a star that didn't quite make it. Again, there is the whole possibility that the universe is full of failed stars and that, perhaps, making it to becoming a star is indeed difficult.

The universe is amazing.

Share this post


Link to post
Share on other sites

Six times the mass of Jupiter - a bit short of being a brown dwarf (13 + Jupiter masses). Brown dwarfs are capable of deuterium fusion, but are not considered stars, which have to be at least 80 Jupiter masses or so to start hydrogen fusion. If it is still accreting mass, it may one day burst into light.

I recall the discovery of a starless planet being reported several months ago.

Share this post


Link to post
Share on other sites

Six times the mass of Jupiter - a bit short of being a brown dwarf (13 + Jupiter masses). Brown dwarfs are capable of deuterium fusion, but are not considered stars, which have to be at least 80 Jupiter masses or so to start hydrogen fusion. If it is still accreting mass, it may one day burst into light.

I recall the discovery of a starless planet being reported several months ago.

I'm looking forward to that! Let me know when it happens, and I will get my telescope out! :huh:

Share this post


Link to post
Share on other sites

That's a shame, I've got plans that night.

You are quite welcome to look up my telescope! Unlike those bloody "doctors", who inserted one in me!! :P

Share this post


Link to post
Share on other sites

  • Recently Browsing   0 members

    No registered users viewing this page.

  • The Prime Minister stated that there were three Brexit options available to the UK:   220 members have voted

    1. 1. Which of the Prime Minister's options would you choose?


      • Leave with the negotiated deal
      • Remain
      • Leave with no deal

    Please sign in or register to vote in this poll. View topic


×

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.