If Pluto–which was *demoted from planet status to that of “*dwarf planet” in 2006 –had feelings... known as “the man who killed Pluto”. In 2005, he discovered an icy body called Eris that is roughly ……

bigger than Pluto.This forced a decision: Either Xena was a proper planet, or Pluto was a dwarf.... It stripped Pluto of its planetary status and demoted it to a dwarf planet.Pluto's history WHEN Pluto ……

. Since childhood we have thought of Pluto as the ninth planet.Now there are problems for textbook...(常识) is not always true. Calling Pluto a "dwarf planet" does not make it less important to science ……

composition.Is Pluto a planet? In 2006, the International Astronomical Union (IAU) downgraded Pluto from...Here are some questions you may want to ask about the Pluto mission.Why is the mission such a big ……

on August 24 to create the first scientificdefinition(定义) of the word "planet", and Pluto obviously... neighbourhood around its orbit (轨道). Pluto has widely been considered a planet since its discovery in 1930 ……

's discovery also calls Pluto's planet status into question, said Mike Brown, who first detected... object half the size of Pluto — dubbed Quaoar.The scientists say the dark, reddish object ……

冥王星的“心”里有片海？词数 150 测试见IV版 建议阅读时间 6分钟 Look, Pluto has a “heart”! In fact, it is a heart-like crater (心形的弹坑) on the dwarf planet (矮行星). The crater is icy. Now scientists say there may be water under ……

the edges of our solar system for the first time as probes head to Pluto (冥王星) and Ceres (谷神星). This March, NASA expects the spacecraft Dawn to reach the dwarf planet of Ceres, which measures 590 miles ……

the names of each planet (行星) in the boxes. Riddle:Pluto’s not a planet...;Riddle:Pluto’s not a planet, but it is the furthest (离得最远的) from Earth. It lies beyond three ……

It is the closest planet to the sun. It can be very hot during the day. At night it cools down to 180 degrees... speed skating and figure skating (花样滑冰) there!It is the closest planet to the sun. It can be very hot ……

“Plutoed”当选美国2006年度流行词汇
拔得头筹。PLUTO may no longer be a planet, but it has a new claim to fame: "Plutoed" has been chosen 2006... or devalue someone or something. That's what happened to the former planet Pluto when the General Assembly ……

called Mount Olympus. So maybe we can ski on Mars!Pluto  冥王星Pluto is a dwarf planet (矮行星) far...  水星It’s the closest planet to the sun. In the daytime the temperature (气温) can be 430 C ……

a "planet"C. Mars is very hot and you can't go near itD. Pluto shares the same orbit with Neptune3... the definition of a "planet"B. Pluto cannot compete with other planetsC. Pluto is attracted by Neptune ……

planet,Xena(齐娜).Xena is a planet-like body. Scientistsdiscovered(发现) it in 2003. It's nearPluto(冥王星) and about 2,700 kilometres in diameter (直径). Pluto is 2,274 kilometres in diameter.Scientists thought ……

POOR Pluto (冥王星). First it gets kicked out of the planet club, now it's not even the coldest known... Pluto's coldest place, which was measured at -230 C in 2006.“The lunar south pole is among the coldest ……