Out of the Planet Club
Last year we had 9 planets. Recently we were informed it would grow to 12. Now we’ve only got 8. The International Astronomical Union, currently meeting in Prague, voted on August 24, canada goose factory outlet 2006 to demote Pluto down from planethood status. Now Pluto, Charon, Ceres and the newly discovered 2003 UB313 (aka Xena) will merely be known as “dwarf planets”. Under the new definition, planets must orbit a star, be spherical in shape, and clear out their neighbourhood of orbital debris. Pluto has failed to fulfill the third requirement, so it’s official Pluto is goose outlet canada not a planet.
It is official: The 26th General Assembly for the International Astronomical Union was an astounding success! More than 2500 astronomers participated in six Symposia, 17 Joint Discussions, seven Special Sessions and four Special Sessions. New science results were vigorously discussed, new international collaborations were initiated, plans for future facilities put forward and much more.
In addition to all the exciting astronomy discussed at the General Assembly, six IAU Resolutions were also passed at the Closing Ceremony of the General Assembly:
1. Resolution 1 for GA XXVI : “Precession Theory and Definition of the Ecliptic”
2. Resolution 2 for GA XXVI: “Supplement to the IAU 2000 Resolutions on reference systems”
3. Resolution 3 for GA XXVI: “Re definition of Barycentric Dynamical Time, TDB”
4. Resolution 4 for GA XXVI: “Endorsement of the Washington Charter for Communicating Astronomy with the Public”
5. Resolution 5A: “Definition of ‘planet’ ”
6. Resolution 6A: “Definition https://www.outletcanadagoose.biz of Pluto class objects”
The canada goose outlet parka IAU members gathered at the 2006 General Assembly agreed that a “planet” is defined as a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.
This means that the Solar System consists of eight “planets” Mercury, Venus, Earth, Mars, Jupiter, Saturn, canadian goose jacket Uranus canada goose outlet black friday and Neptune. A new distinct class of objects called “dwarf planets” was also decided. It was agreed that “planets” and “dwarf canada goose outlet planets” are two distinct classes of objects. The first members of the “dwarf planet” category are cheap canada goose Ceres, Pluto and 2003 UB313 (temporary name). More “dwarf planets” are expected to be announced by the IAU in the coming months and years. Currently a dozen candidate “dwarf planets” are listed on IAU’s “dwarf planet” watchlist, which keeps changing as new objects are found and the physics of the existing candidates becomes better known.
The “dwarf planet” Pluto is recognised as an important proto type of a new class of trans Neptunian objects. uk canada goose The IAU will set up a process to name these objects.
Below are the planet definition Resolutions that were passed.
Resolution 5A is the principal definition for the IAU usage of “planet” and related terms.
Resolution 6A creates for IAU usage a new class of objects, for which Pluto is the prototype. The IAU will set up a process to name these objects.
IAU Resolution: Definition of canada goose outlet store a Planet in the Solar System
Contemporary observations are changing our understanding of planetary systems, and it is important that our nomenclature for objects reflect our current understanding. This applies, in particular, to the designation ‘planets’. The word ‘planet’ originally described ‘wanderers’ that canada goose factory sale were known only as moving lights in the sky. canada goose clearance sale Recent discoveries lead us to create a new definition, which we can make using currently available scientific information.
The IAU therefore resolves that “planets” and other bodies in our Solar System be defined into three distinct categories in the following canada goose outlet nyc way:
(1) A “planet”1 is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and canada goose outlet jackets (c) has cleared the neighbourhood around its orbit.
(2) A “dwarf planet” is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape2, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.
(3) All other objects3 canada goose jacket outlet except satellites orbiting the Sun shall be referred to collectively as canada goose outlet “Small Solar System Bodies”.
Original Source: IAU News Release
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I totally disagree with you, just because Pluto has a bad orbit doesn mean it not a planet. Here what I think what happened:
I agree that Pluto canada goose outlet sale is a member of the Kuiper Belt, which means that it was once a comet. But then, out of nowhere, a meteorite or another comet smashes into Pluto, knocking it plain out of orbit. Pieces from the impact form back, giving Pluto a spherical look. Other canada goose outlet canada canada goose uk outlet pieces form Pluto neighbor moon, Charon.
Also, I heard that during it 20 earth years in front of Nuptune, it had an atmosphere. That atmosphere development was likley pernament, so it probably still has it. I seen blurry, close up pictures of Pluto, and it looks like it has an atmosphere. Also during those years, if they weren formed in the impact, two objects must have got caught in the orbit of the tiniest planet of the Solar System. Those were Pluto secondary moons, Hydra and Nix.
The other thing is, New Horizons was already on the way, and it was unfair to kick Pluto out of the planet club when the first probe to get there was on the way. So what those IAU geeks say are fat out lies. WAIT NEW canada goose uk shop HORIZONS HAS EVIDENCE, THEN YOU CAN TELL WHETHER PLUTO IS A PLANET OR NOT. So what those people say isn canada goose coats official. Those 2,500 scientists came there for nothing. Pluto IS a planet, and it always will be. Oh, sure, it has a bad orbit, and passed in front of Neptune for 20 years, but like I said in the beginning, just because the ninth planet has a bad orbit, doesn mean it not a planet. So it official. PLUTO IS A PLANET.