What makes a person light up a room?

What a lovely question! I think it would be a person who is very positive, relaxed, and in the moment - alert and aware, taking everything in, smiling and being friendly. They would have some inner peace and strength gained from their spirituality ( and by this I do not necessarily mean a religion, but just loving and beautiful beliefs about life and human nature). It would be a person whose inner beauty radiated through them. And because they loved themselves, they would look after themselves so they would look physically healthy, fit and full of energy. They would have no 'baggage' but be light in outlook, regardless of age, and have wisdom and humour.

May things can make a person light up the room. For example, they could smile alot, they could laugh, most of the time they have to nice personality and you know them from before.. Like if you walked in to a room where your friends were then you could brigjt the room for them because you have a nice personality.

Nothing happens in this world, without any reason. It must be either this way or that way. Right now I am also not able to guess correctly. I am only getting some vague ideas, which may not be true. I will give a deep study, examine and analyze this from different angles in the early hours of the morning tomorrow, when my mind remains refreshed and recharged.

A person who is self confident, but not conceited will exude an aura. She doesn't have to be beautiful.

If she treats everyone she meets with sincerity and grace, and smiles. If she lightly touches an arm or leans in to a person she talks to. If she has a pleasant laugh. If you are on the other side of the room, you want to cross it to be around her.

smiling, looking around at everything and being interested about what's in the room and why its there, making eye contact, making other people feel happier when they come in, open expression and posture, the list is endless really

Flipping the light switch... Really.

Very serious radiation sickness?

The darkness already in it.