Why was Pluto downgraded to a dwarf planet?

Matt Francis

Many people will remember the controversy generated back in 2006 when the reclassification of Pluto took place. Pluto’s place as a planet at this point had been questioned since the Seventies. Other objects had been found in the Solar System of a comparable size and these objects weren’t classified as planets.

In August 2006, the International Astronomical Union (IAU) met and redefined exactly what ‘planet’ meant. It was decided that Pluto did not fit within that definition and so it was added to the new classification of dwarf planet. To qualify as a planet an object must orbit

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Dwarf Corys

Dwarf corys are the ideal choice for the classic 24-inch (60cm), 15-gallon (54-L) tank. They are peaceful, active during the daytime, and easy to maintain. They can be reproduced quite easily because they do not eat their offspring.

In short, if you like nano-scale fishes and only have a bit of space you should try dwarf corys. This article introduces the most common species.

Among the more than 400 catfish species of the subfamily Corydoradinae (family Callichthyidae) that colonize the numerous South American river systems, we know a variety of shapes and sizes. They range from the large, bulky species

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Dwarfs, giants

Composing with children

How are gnomes?

What are the growth? What do they wear? As they say? How to go?

All questions can be answered and the words and movements.

And, you can draw a picture.

How are the giants?

What are the growth? How do they say? How to go?

How easy is it to them to see what is happening on the ground under their feet?

And these questions can be answered in words and actions, and then draw an interesting picture.

Then you can hang all the pictures in the exhibition examine them properly and then

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Some people are still unhappy about Pluto’s demotion to a dwarf planet, but it’s in good company — there are some fascinating celestial bodies in this category.

What makes a planet a planet? We’ve been debating this almost since planets were discovered. In 2006, the International Astronomical Union came up with the first-ever scientific definition of a planet. With that came a new classification for these heavenly bodies that weren’t quite planets, but were more than just asteroids. While this resulted in the demotion of Pluto — previously our ninth planet — it also meant that there was a whole

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The study of dwarf galaxies deepens the mystery of dark matter

The study of dwarf galaxies deepens the mystery of dark matter Facts

The study of the two neighbors the Milky Way dwarf galaxy in the constellation Sculptor oven and shows a smooth distribution of dark matter. According to scientists at the Harvard-Smithsonian Center for Astrophysics familiar cosmological model in which clumps of dark matter at the center of galaxies, may be incorrect.

Like all of the galaxy, the Milky Way contains dark matter. It is invisible, but finds itself due to gravitational effects on other objects. So, without dark matter velocity stars would be shattered in all directions.

According to

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A new class of exoplanets

A new class of exoplanets Facts

Planet, covered with a layer of water vapor and having a dense atmosphere, scientists identified in a separate class of exoplanets. Weight open in 2009, the planet GJ 1214b, which is attributed to this class, seven times the weight of the Earth's diameter is 2.7 times greater.

Artist view on dwarf stars, around which a GJ 1214b.

Discovered planet orbits the red dwarf star that is half the size of the sun. The surface temperature of the star is less than 4 thousand K, about 2000 K lower than the temperature of the sun.

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The white dwarf in the center of a supernova

The white dwarf in the center of a supernova Facts

August 24, 2011 California astronomers have found a supernova explosion in the process, since the start of which was only 11 hours. 2011fe supernova is 25 million light-years away in one of the branches Pinwheel Galaxy (M101). This is the closest and brightest supernova at a specified distance. Now scientists know that led to the creation of SN 2011fe. It was a white dwarf with a high density and size as that of the Earth. Astronomers also have detailed photos of explosion and the birth of stars. Study published in

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DNA analysis Kyshtymskoye dwarf




Finished second attempt to conduct genetic analysis of sample "Kyshtymskoye dwarf" (strange creature, found and lost in the Chelyabinsk region in 1996, in search of that "Kosmopoisk" expedition fitted out 4). In the near future, as soon as the report comes in, "Kosmopoisk", excerpts from it will

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Anomalschina: in the footsteps of dwarf Kyshtymskoye




"Arguments and Facts", 01.01.2004, Moscow, n1, p.20

Author: Dmitry Pisarenko

* Home in the "AIF" NN44, 46-48, 50.

After the publication of "AIF" of the mysterious circles that occur on wheat and other fields, the editors began to address the readers. They offer a variety of hypotheses

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Gnomes. Grandparents blacksmithing

Gnomes — spirits of the land, forests, mountains, underground narodec. They are small, low, very strong, are very long beards and live much longer than humans. Gnomes are known for their quick temper, rage in battle.

Do you dream of is not an ordinary dream and you want to know its value? Then, see the dream book online, which can be found on the portal sonnik-land.ru.

They are not as clever as people, not as resourceful, but usually much wiser, life experience acquired over many years. Gnomes

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