a Dwarf Planet (Eris) or an Extrasolar planet. An extrasolar planet is a planet that orbits a star other than our Sun. Again, an extrasolar planet can be either Rocky, Gas or Dwarf. We have been discovering planets orbiting other stars. Still, most of those were gas giants whose life...
Along with the development of society, more and more problems are brought to our attention, one of the most serious issue is the gray population. Nevertheless, the significance of elderly people in society cannot be overstated. As...
It was this mind-blowing series of improbable events that made Earth the possibly unique life-bearing planet it now is. The idea that Earth may indeed be unique could have been spawned by this famous photo taken on the Apollo 8 mission in 1968.正是这一系列令人兴奋的不可能的事件，使地球成...
No one else, no matter how much we talk or cry, can pull us through the anxious hours of soul repair and growth. It is our own fire within that needs rekindling, guarding against the winds that would blow it out and leave us dark, cold and helpl...
In fact, we used to call each other 'Old Friend' — when we'd meet, that is. I'm not much of a hand at writing." “不是家里人,”他回答说。“不过,”他接着说,“想起来,也可以算是一家人了。埃德老伙计是我最老的朋友了。实际上,过去我俩总是以‘老朋友’相称的 —— 就是说,当...
But if you tame me, then we shall need each other. To me, you will be unique in all the world. To you, I shall be unique in all the world…" 但是,如果你驯服了我,我们就会成为彼此不可或缺的一部分。对我来说,你就是世界上唯一的;我对你来说,也是世界上唯一的。” ...
Planet Earth is made up of four overlapping subsystems that contain all of world’s land masses, water sources, living organisms, and gases. These four subsystems are known as spheres. Geographers break down the Earth’s systems into four spheres that make up the world’s air (atmosphere),...
kids learn the name of the planets and arrange them in order from the sun with this fun playdoughsolar system projects for kids. This is a quick and easy-to-make solar system model that can be done along with a solar system project or done cooperatively with each student adding a planet...
football-sized (soccer) object travelling towards one another will destroy each other in a collision. The objects could merge based on gravity pulling them together if the speed and path are correct. The theory of a comet increasing in size is conjecture and not backed up by peer-reviewed ...
Education is the sum of what students teach each other in between lectures and seminars. 出自-2016年12月阅读原文 E.B.Du Bois was concerned that race was being used as a biological explanation for what he understood to be social and cultural differences between different populations of people. ...