That surprises you; not expected. unexpected or astonishing event, fact. cause someone to feel mild astonishment or shock.

person who is studying or has expert knowledge of one or more of natural or physical sciences. People who are trained in a science.

plan or course of action. Plan to achieve a desired result. To determine the value or importance of something.

quality or state of giving out or reflecting light.

Of the spying services; acting in secrecy. ability to acquire and apply knowledge.

planet that orbits star outside solar system. .

optical instrument designed to make distant objects appear nearer, containing arrangement of lenses, or of curved mirrors and lenses. slide or cause to slide into itself, so that it becomes smaller.

quality of being intense.

as truth or facts.

Person's opinion about something. To have an idea about something without certainty.

Concerning a transport system in a city. Process of changing planes at airports. pass across or through.

To help prove or show that something is true.

persistent in one's mind but reluctantly held or not fully recognized. To take something somewhere/give secretly.

To make a public statement about a plan, decision.

person who carries out academic or scientific research. People who work to find new facts and ideas.