There something happens. He does not know how, but he has been transported to the Red Planet,Mars.

VOA: special.2010.07.17

.091 has a syllabus that is unlike general chemistry taught anywhere else on the planet.

。091的课程大纲与这个地球,其他地方的化学概论课不一样。

麻省理工公开课 - 固态化学导论课程节选

"This valley of history has seen mankind complete its first evolutionary steps into the universe: leaving the planet Earth and going forward into the universe.

VOA: special.2010.04.28

Today,the happy-go-lucky sponge has fans in almost every country on the planet.

VOA: special.2009.08.21