Solar System

[R-T-B]

It also has a mass sufficiant to maintain satellites in stable orbit around itself.

Some co-orbit it though. Therein lies part of the issue with the present definition. Pluto is more a system than a planet, there is more mass in moons than there is in Pluto if I'm not mistaken.

If that's the case, you need to revise the definition to readmit it, honestly.

Lots of qualifed people don't agree with it. I'm hardly alone.

I'm unaware of any, but would be open to being proven wrong.. Keep in mind trojan bodies don't count.

 

[dorsetknob]

Think we all agree Pluto/Charon is unique for our Solar system
I Believe they were considering calling Pluto/Charon a Binary planetry system .

 

[R-T-B]

Think we all agree Pluto/Charon is unique for our Solar system
I Believe they were considering calling Pluto/Charon a Binary planetry system .

I'm all for that, frankly. Sounds way cooler than "Dwarf Planet" and has none of the "haha you're not a planet, go play with the asteroids!" connotation which it really doesn't need.

 

[dorsetknob]

Some co-orbit it though. Therein lies part of the issue with the present definition. Pluto is more a system than a planet, there is more mass in moons than there is in Pluto if I'm not mistaken.

Pluto and Charon have a common Center of orbit that lies somewhere between the 2
the other 4 minor moons co orbit this pair and they speculate that there might also be a fine ring system

 

[Ahhzz]

Some co-orbit it though. Therein lies part of the issue with the present definition. Pluto is more a system than a planet, there is more mass in moons than there is in Pluto if I'm not mistaken.

If that's the case, you need to revise the definition to readmit it, honestly.



I'm unaware of any, but would be open to being proven wrong.. Keep in mind trojan bodies don't count.

"It's a sloppy definition," Metzger said of the IAU's definition. "They didn't say what they meant by clearing their orbit. If you take that literally, then there are no planets, because no planet clears its orbit." "

Here's an article from the University of Central Florida, Their recommendation:

"Metzger recommends classifying a planet based on if it is large enough that its gravity allows it to become spherical in shape.
"And that's not just an arbitrary definition, Metzger said. "It turns out this is an important milestone in the evolution of a planetary body, because apparently when it happens, it initiates active geology in the body."

 

[R-T-B]

Pluto and Charon have a common Center of orbit that lies somewhere between the 2
the other 4 minor moons co orbit this pair and they speculate that there might also be a fine ring system

I'm aware. "Some" was just poor wording. Before it's demotion, Pluto was my favorite planet (and Charon was it's only moon).

 

[dont whant to set it"']

So the solar system has 4 planets, 4 gas giants(brown dwarfs) and the planetoid Pluto?

 

[R-T-B]

So the solar system has 4 planets, 4 gas giants(brown dwarfs) and the planetoid Pluto?

Gas giants are planets. Brown dwarfs are stars.

 

[Caring1]

Brown dwarfs are stars.

Google image search is too P.C.
I actually expected images other than stars

 

[R-T-B]

Google image search is too P.C.

Yes, but in this case it is probably doing it's job properly.

 

[dorsetknob]

So the solar system has 4 planets, 4 gas giants(brown dwarfs) and the planetoid Pluto?

Current Belief is
4 inner planets ( Mercury Venus Earth Mars)
2 planetoid in Asteroid Belt (Ceres Vesta).
4 Gas Giants (Jupiter Saturn Neptune Uranus )
5+ Kuiper Belt Planetoids ( Pluto Sedna Eris Quoaor 38628 Huya Salacia 2002 UX25 + more yet to be found and named)

NO Brown Dwarf Stars and The planet of Nibiru also not found

 

[lexluthermiester]

Brown dwarfs are stars.

Technically, that is incorrect. A star is any body of mass that has nuclear reactions taking place in it's core. Brown dwarfs do not. It would be better to call them "Proto-Stars" or something similar.

 

[Deleted member 24505]

Technically, that is incorrect. A star is any body of mass that has nuclear reactions taking place in it's core. Brown dwarfs do not. It would be better to call them "Proto-Stars" or something similar.

Or a dead dwarf

 

[cornemuse]

Or a dead dwarf

Hey! no dwarf tossing!!

 

[dorsetknob]

Technically, that is incorrect. A star is any body of mass that has nuclear reactions taking place in it's core. Brown dwarfs do not. It would be better to call them "Proto-Stars" or something similar.

Brown Dwarf's are Classed as Stars
Many do have a "Nuclear Reaction" ongoing at their core (hydrogen fusing to Deuterium) but this is not enough to Ignite into full Fusion

Case in Point Jupiter is outputting more heat as a Solar Body than it receives from our Sun which is probably due to Radioactive Decay at the core.

 

[Drone]

 

[Drone]

 

[R-T-B]

Technically, that is incorrect. A star is any body of mass that has nuclear reactions taking place in it's core.

Seems you are correct. Cookie for you... Be careful a frog made it.

Brown Dwarf's are Classed as Stars

Wikipedia seems to agree with him. I think they can have stellar properties (like being the center of a solar system) but they are not technically stars.

 

[lexluthermiester]

Wikipedia seems to agree

Not just Wikipedia..

Are brown dwarfs failed stars or super-planets?

Brown dwarfs fill the "gap" between stars and the much smaller planets—two very different types of astronomical objects. But how they originate has yet to be fully explained. Astronomers from Heidelberg University may now be able to answer that question. They discovered that the star ν Ophiuchi...

phys.org

What is a brown dwarf?

Are brown dwarfs stars, planets or neither? | Astronomy.com

categories:Exoplanets, Science, Stars | tags:News

www.astronomy.com

 

[dorsetknob]

Mass and therefore gravity Determin what elements Fuze together
Because of their Size and mass it is Suspected Brown Dwarf's can only Fuze hydrogen to Deuterium and that is the maximin status of their Fusion.
and of course this limits the Power/Temputure they can achive

 

[MatGrow]

Is it modeling or real shoot?

 

[lexluthermiester]

Is it modeling or real shoot?

Who are you talking to? And what are you talking about?

Using TPU's builtin reply function helps everyone know these things. Otherwise, it's all just guessing games and none of us are mind-readers.

 

[R-T-B]

Who are you talking to? And what are you talking about?

Using TPU's builtin reply function helps everyone know these things. Otherwise, it's all just guessing games and none of us are mind-readers.

Looking at his comment history I would guess he is talking about the older black hole photos. Or maybe these? Regardless he's asking I think if the photos are "real."

 

[lexluthermiester]

Looking at his comment history I would guess he is talking about the older black hole photos. Or maybe these? Regardless he's asking I think if the photos are "real."

That's exactly the point, it's a guessing game unless he quotes what he's replying too..

 

[dont whant to set it"']

NASA is "about" to send a helicopter drone to Saturn's satellite Titan for research and exploration of course, it is part of NASA's New Frontier Program.

NASA is sending a drone helicopter to Saturn’s Titan in search of life

Nasa to send Dragonfly drone to explore Titan, Saturn's largest moon

Major new mission, in which Dragonfly will hunt potential landing sites, to help scientists research whether Titan could support microbial life

www.theguardian.com