without doubt.

massive and extremely remote celestial object. Bright, faraway matter in space, similar to stars.

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

used or accepted as normal or average. Principle of behaving in a moral way.

Being what was wanted or needed. used to greet someone in polite or friendly way. Friendly greeting to someone who has arrived. To greet someone who has just arrived.

referring to signals/information represented by discrete values of quantity.

set down in writing or some other permanent form for later reference. To indicate a temperature, speed, etc.; register.

establish identity of.

To serve as an example or evidence of something.

To act correctly.

Making people surprised or amazed; amazing. To cause someone to feel great wonder or surprise.

Creating a feeling of excitement. electric train.

Person's opinion about something. To have an idea, opinion or belief about something.

take someone or something to place.

Set of changes that occur slowly and naturally. To adopt a set of actions that produce a result.