es la parte del método científico en donde las personas a través de los sentidos pueden identificar un problema. *

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

Why do we perceive objects as retaining their brightness under different lighting levels?