Agnostic.com
3 5

A fail star or large planet but still a loner.
A weird object nonetheless

[salon.com]

Bizarre “rogue planet” found lurking in Earth’s galactic neighborhood
With about 13 times the mass of Jupiter and a visible aurora, this strange world opens new doors for astronomers

Lukian 8 Aug 8
Share
You must be a member of this group before commenting. Join Group

Enjoy being online again!

Welcome to the community of good people who base their values on evidence and appreciate civil discourse - the social network you will enjoy.

Create your free account

3 comments

Feel free to reply to any comment by clicking the "Reply" button.

1

it just about meets the definition of a brown dwarf. they are incapable of igniting a 4 proton fusion reaction and rely on deuterium to He3 for heat. since deuterium is rare, brown dwarfs radiate IR and have short lives compared to main sequence stars like sol. the intersting thing about this report is the detection of a rogue at 20 ly .. this is a microJy detection and what the James Web telescope was designed to do. as far as its origin, I would guess that it was ejected from a globular cluster as a subpart of a binary star formation. A spectrum of the object would help determining its origin since it would show its composition and relative velocity.. these would help find where it formed. the temperature vs size would give an approximate age and velocity and age gives travel distance.

JohnBeret Level 5 Aug 9, 2018
2

20 light years away is not far. Not that we will go visit it any time soon, unless some passing aliens sell us FTL technology.

Denker Level 7 Aug 8, 2018

I told myself the same thing 20 LY is very close... Also speculating if it could be our missing binary solar partner but that is wishful thinking.

2

How large would a planet need to be before the mass couldn't support itself?

Squirrel Level 7 Aug 8, 2018

according to the article, a planet that is 13 times the mass of Jupiter and having deuterium would ignite. This fellow is just shy of that combating weight at 12.7.

@Lukian Today I learned deuterium exists.

@Squirrel learning is always good...

@Lukian yeah but I'm at work. I need to be doing paperwork. I'm getting lost in learning about what a stable isotope ratio is

@Squirrel working is always good...

Recent Visitors 24

Photos 424 More

Posted by starwatcher-alThe occultation of Mars on the 7th.

Posted by starwatcher-alThe occultation of Mars on the 7th.

Posted by starwatcher-alSolar minimum was in 2019 so the sun is ramping up in flares, spots and prominences.

Posted by starwatcher-alI missed the early phases of the eclipse but the clouds mostly left during totality. All in all a great eclipse. Next one is Nov. 8-22

Posted by starwatcher-alI missed the early phases of the eclipse but the clouds mostly left during totality. All in all a great eclipse. Next one is Nov. 8-22

Posted by RobecologyFor those following the JWST.

Posted by AnonySchmoose The post-launch set-up of the new James Webb telescope has gone very well.

Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus

Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus

Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus

Posted by HumanistJohnImages taken with Stellina (80 mm): M33 Triangulum Galaxy M1 Crab Nebula NGC281 Pacman Nebula in Cassiopeia NGC 6992 Veil Nebula in Cygnus

Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.

Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.

Posted by HumanistJohnImages taken October 2nd 2021 with Stellina 1.

Posted by starwatcher-al Did you know that you can see Venus in the daytime?

Posted by starwatcher-alOne of these days I think that I'll figure out this Nikon.

  • Top tags#video #earth #moon #solar #mars #stars #planets #world #Jupiter #NASA #galaxies #astronomy #god #hope #cosmic #university #eclipse #physics #kids #einstein #religion #religious #money #evidence #movies #scientific #existence #discovery #book #created #friends #humans #ancient #death #theories #reason #asteroid #children #DonaldTrump #USA #laws #alien #community #society #evolution #parents #guns #hello #birth #California ...

    Members 730Top

    Moderator