গ্রহ নক্ষএ

For Astronomy lovers who would love to discuss about celestial objects.
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leonardo shawon
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Joined: Sat Jan 01, 2011 4:59 pm
Location: Dhaka

Re: গ্রহ নক্ষএ

Unread post by leonardo shawon » Thu Jan 20, 2011 11:31 am

Moon wrote:
leonardo shawon wrote:stop using BANGLA font. REQUEST...
I don't understand why you are requesting to do so. :?

If you face any technical problem with fonts discuss in the site support sub-forum.
every is okay bhaia :-D thank you ;-) :D :) :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen:
Ibtehaz Shawon
BRAC University.

long way to go .....

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Abhijeet Dutta
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Re: গ্রহ নক্ষএ

Unread post by Abhijeet Dutta » Sat Jan 29, 2011 12:22 pm

arekta distinction hote pare "ke kake gire ghore"
Complicate korte chai bo na tobe tumi jeheto bolecho "Planet and Stars er moddhe difference ki?" tai eta bola.
Agei onek vaiya ra "Star and Planet" formation explain korechen and it was absolutely wonderful.
To ami arekta point diye total doto difference korchi(jodio onek kora jai jemon star e shudu simple elements gulo jemon hydrogen,hellium, Neon thake but Planet e onek complex element O paoa jai.
Keno gold eto priceworthy! Karon eta kono star er boke create hote pare na eta Hypernova(Onek visal tara jara nabula mane gas cloud create kore and tader age O onek kom hoy, generally eder protno tara bole ar amader Sun holo "Main Sequence Star" jar mass O illumination er moddhe identical relation ache)/Supernova(eta natural massive than Sun star der khetre hoy) r somoy je prochondo tap, chap create hoy tokhoni create hoi. Tai egulo shudu Planet e paoa jai)
Keno Star ke gire sob planet ghore etar answer sobai dite parbe ( jemon onek Greek darsonik ra branto darona theke bareya eshe babchilo) but keu ki bolte parbe keno moon earth ke ghire ghore sun ke ghire keno earth er moto ghore na!
Onek kichu diye explain korte chesta korte paro tobe ami Scientically approved ekta bisoi nijer moto kore boli ar ta holo
dhoro ekta carpet(dhore nao etar elasticitty khomota valo) ke charti khuti te bede jhuliye rekecho(Eta ke fabric bolte paro) ekhon er moddhe ekta vari bosto dile(dekho jeno na chire!) dekhbe eta ekhdom majkhane giye poreche ebong erekta kom vhari bosto jodi er charpashe chere dao dekhbe ota majher bosto take ghire ghorche tik ei kaj ta hoi star ar Planet der khetre tobe tara elliptical pothe ghore oi gravity er karone. Ar Moon holo planet theke bicchone hoye jaoa onek mass(rocky mass bolte paro) ja planet er gravity r karone er chardike ghore(tik ager experiment ta tobe ekhtre majer bosto holo Earth. Are eta just bojhar jono example dilam real ghotona onek complex!)
I hope beshi bore kori ni :)
Shout aloud scream aloud let me hear you go

kamrul2010
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Re: গ্রহ নক্ষএ

Unread post by kamrul2010 » Tue Feb 01, 2011 1:51 am

খাইসে রে,মেলা কিছু দেখি জানতাম না!
তানভীর ভাইকে ধন্যবাদ! :-)

"It is not known with certainty how planets are formed. The prevailing theory is that they are formed during the collapse of a nebula into a thin disk of gas and dust. A protostar forms at the core, surrounded by a rotating protoplanetary disk. Through accretion (a process of sticky collision) dust particles in the disk steadily accumulate mass to form ever-larger bodies. Local concentrations of mass known as planetesimals form, and these accelerate the accretion process by drawing in additional material by their gravitational attraction. These concentrations become ever denser until they collapse inward under gravity to form protoplanets. After a planet reaches a diameter larger than the Earth's moon, it begins to accumulate an extended atmosphere, greatly increasing the capture rate of the planetesimals by means of atmospheric drag." [From wiki-]

জানার আছে অনেক কিছু~~
If computers have no doors or fences, who needs Windows and Gates?

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nisha
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Joined: Tue Dec 07, 2010 8:00 pm
Location: Bogra,Bangladesh

Re: গ্রহ নক্ষএ

Unread post by nisha » Mon Feb 14, 2011 5:43 pm

আমিও অনেক কিছু জানলাম! :D

arnob54
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Location: Dhaka

Re: গ্রহ নক্ষএ

Unread post by arnob54 » Thu Feb 17, 2011 11:11 pm

the idea about "failed star" actually its said so because jupiter is not so heavy compared the amount of mass needed to form a "Star". and the 2nd characteristics of a star is u might say, it should emit "light", the idea is that jupiter DOES emit light but its in infrared and so what we understand to be a star in our general sense, does not apply to jupiter hence its not a star. you might want to read ODYSSEY by Arthur C Clark, an awesome sci fi based on this info :)
Tanveer

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