Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. In an older and closely related meaning (found, for example, in Aristotle), "science" refers to the body of reliable knowledge itself, of the type that can be logically and rationally explained.
Solar system's twin found
Astronomers have found a planetary system similar to ours-a Jupiter-like world circling a Sun-like star in roughly the same orbit that Jupiter follows our Sun...
Physics > Astronomy & Space