planets

Tigist Sitota · Post by **Tigist Sitota** » Thu Apr 26, 2007 5:50 pm

can you explain about the new planet obtained? and why is pluto said a planet? what are the critereas to call something a planet?

BMAONE23 · Post by **BMAONE23** » Thu Apr 26, 2007 7:33 pm

The term PLANET has several requirements which include must orbit a star (rogue worlds?). Must have swept its orbit clear of debris (I don't know what this would mean about Jupiter and Its Trojans. Must be large enough that its specific gravity is sufficient to pull it into a sphere. If there is a moon involved, the PLANET must be in the primary orbit and the moons orbital center must fall within the mass of the planet (In the case of Pluto/Charon, the pair orbit the sun but they orbit each other where Charons center of orbit falls outside the body of Pluto (barycenter?)).

Given the current limits of our technology, we cannot detect anything as small as Pluto, yet, so therefore anything we do detect must be a planet (unless it is a dual planetary body like 2 earths that are orbiting a central point as they also orbit their star) (would that be possible?)

craterchains · Post by **craterchains** » Sun Apr 29, 2007 1:20 pm

, , , all things are possible.

zeilouz · Post by **zeilouz** » Mon Jul 30, 2007 9:27 am

I read about an article from last month's newpaper and it is said that NASA has found a planet which could sustain life exactly like earth..isit true..?

Doum · Post by **Doum** » Mon Jul 30, 2007 8:38 pm

zeilous writed

I read about an article from last month's newpaper and it is said that NASA has found a planet which could sustain life exactly like earth..isit true..?

"COULD" is a very important word in this sentence. I say "yes" with a lot of "If". Meaning, the planet might be at the same distance from his sun as earth is from our sun. "But", the size of that planet or its revolution or its axis of revolution or the type of sun it revolve around , all those might also stop life from emerging.
So what it mean is "Yes it could". And its facinating to imagine life there. More study and more powerfull telescope are needed to know the answer.
Time will tell and futur astronomer.

orin stepanek · Post by **orin stepanek** » Tue Jul 31, 2007 2:12 am

http://www.space.com/spacenews/070716_b ... epler.html
Planet hunters are finding about 2 planets every month. Let's hope that the Kepler mission doesn't get canceled. It could make for some exciting astronomy to be able to find earth type planets orbiting nearby stars.

Orin

zeilouz · Post by **zeilouz** » Tue Jul 31, 2007 7:15 am

If they did used a very very powerful telescope..n hope we "could" search for new life at the so called "earth",maybe a cell,(paramecium,amoeba),would make every astronomer's or star gazers amazed to the fact that,we are not alone.. 8)

nikki · Post by **nikki** » Wed Aug 01, 2007 11:50 am

About what is Planet:

"What's in a name? That which we call a rose
By any other name would smell as sweet."

--From Romeo and Juliet (II, ii, 1-2)

William Shakespeare

Tigist Sitota · Post by **Tigist Sitota** » Fri Aug 03, 2007 6:01 pm

thankyou for your help and I need to get more information if you have additional.And I want you to get me the list of each planets moons.
yours sincerely.

orin stepanek · Post by **orin stepanek** » Fri Aug 03, 2007 6:06 pm

Hi!Tigist Sitota!
Is this what you have in mind.
http://www.windows.ucar.edu/tour/link=/ ... table.html

Orin

harry · Post by **harry** » Fri Aug 03, 2007 10:59 pm

Hello All

Orin Thanks for the links above,,,,,,,fantastic.
My son is learning quite a bit from some of these great links.

I did not know that there were so many moons.

orin stepanek · Post by **orin stepanek** » Tue Aug 07, 2007 12:08 pm

harry wrote:Hello All

Orin Thanks for the links above,,,,,,,fantastic.
My son is learning quite a bit from some of these great links.

I did not know that there were so many moons.

Quite alright Harry! I didn't realize there were that many either. Think how many objects are beyond Pluto that haven't been discovered yet.
Orin

BMAONE23 · Post by **BMAONE23** » Tue Aug 07, 2007 1:56 pm

Probably 100 fold the number of known moons and unknown moons and probably known asteroids included

zeilouz · Post by **zeilouz** » Mon Aug 20, 2007 11:11 am

I do think that someday mar's moon,phobos n deimos will sink into mars surface..>.<

craterchains · Post by **craterchains** » Sat Aug 25, 2007 1:07 pm

That is fact, not thought.

zeilouz · Post by **zeilouz** » Sun Aug 26, 2007 8:07 am

Then in another 10~50years,mars would have no moons to orbit around mars

link on phobos n deimos;
http://www.harmsy.freeuk.com/phobos.html

Tigist Sitota · Post by **Tigist Sitota** » Sat May 03, 2008 2:49 pm

hey there is that true mars's moon will sink to its surface?oh!gash!

Boner · Post by **Boner** » Mon May 05, 2008 11:48 pm

On the subject of objects beyond Pluto, does anyone know much about the Kuiper Belt (supposed to contain another dwarf planet "Quaoar"), and beyond that "Sedna", another dwarf planet(?), and what about the Oort Cloud (how did it get that name?).

BMAONE23 · Post by **BMAONE23** » Tue May 06, 2008 2:12 am

WIKIpedia is a great site for locating such information as ORT CLOUD and KUIPER BELT objects.