Scientists say that there is a ninth planet in our solar system(太阳系). The planet is 10 times bigger than Earth. It is 20 times farther away from the sun than Earth.(web)
[高中] New 3D printing method
New 3D printing method promises faster printing with multiple materials. Researchers at Stanford have developed the method. Their design is 5 to 10 times faster than the method currently available.(Newsletter Science X)