When Clyde Tombaugh built his first telescope at the age of 20, he could not have known it was setting him forward on a path that would eventually lead to the discovery of the first known dwarf planet, Pluto. Let's take a look at the life of this amazing person. Early life and famil...
In August 2006, scientists declared that Pluto is a dwarf planet(矮行星), which means it is not an ordinary planet. So in fact there are only eight planets in the solar system! Pluto is not the only dwarf planet in the solar system. Earlier in 2005, American scientists discovered a ...
“We traveled a thousand leagues when we encountered little Gaga[Pluto].Then next we passed Antu[Neptune], the beautiful enchantress. Anzu wanted to stop and examine her waters. I was tempted for a moment to stop, but then thought better and motioned to continue. “It’s a planet of no...