Astronomers weren’t sure about Pluto’s mass until the discovery of its largest Moon, Charon, in 1978. And by knowing its mass (0.0021 Earths), they could more accurately gauge its size. The most accurate measurement currently gives the size of Pluto at 2,400 km (1,500 miles) across. ...
Pluto, covered with methane ice and accompanied by its solitary giant moon Charon, is illuminated by a distant Sun, which appears as no more than a bright point of light in a pitch-black sky. 巨大的气体星球海王星、天王星、土星——太阳系的宝石——和木星部分别有一个冰冻卫星作伴相随(这些行星...
and it will take 9 years to reach Pluto in 2015. Its Pluto/Charon encounter will begin in July, and last for more than 100 days, giving us our first close up look at this planet/big Kuiper Belt Object. By the time it arrives, we can only hope the IAU has made ...
but that would still be the case if the sun orbited the earth instead. now that i think about it, there is one thing that conclusively proves that the earth orbits the sun: parallax
I think they go to the place all magical creatures go, like unicorns, leprechauns, and films by Sam Raimi. Mecharon - This top-down shooter featuring enough eight legged freaks to give even the manliest of men the squigglies is fun, if a bit repetitive. Each time you level up, you'...
How far away is Charon from Pluto? How long is a year on Eris? How far is the planet Saturn from Earth? How far are the outer planets from the Sun? How far is the planet Neptune from Earth? Where is Eris in the solar system?
Pluto’s moon, Charon, which had qualified under the first proposal, is also out of the running. Pluto, with its small size and oddball orbit, should never have been deemed a planet in the first place. Henceforth there will be eight planets, at least three dwarf planets, and tens of ...
Is Eris an extrasolar planet? Is Saturn a star or planet? Is Uranus a cold planet? Is Pluto a terrestrial planet? Is Venus the coldest planet? Is Mercury a gas planet or a rocky planet? Is Charon a dwarf planet? Is Dagon an extrasolar planet? Is Uranus a rocky planet?Explore...
Stellarium is a free GPL software which renders realistic skies in real time with OpenGL. It is available for Linux/Unix, Windows and MacOSX. With Stellarium, you really see what you can see with your eyes, binoculars or a small telescope. - daitomanabe/
But Charon’s status as a moon could change in future, the IAU acknowledged. That’s primarily because the center of gravity in the system is not inside of Pluto, but in “free space between Pluto and Charon”. This center is called the “barycenter”, technically — and in Jupiter and...