Light is composed of protons, which have no mass, therefore light has no mass and cant weigh any thing.
A shadow is bigger than you but doesn't weigh anything.
NO.
No.
Altitude doesn't weigh anything.
yes
Well they can weigh anything but the average is about 7 pounds
the galexy does not weigh anything its mass is around 1,153,678000000000000000000000000000000000000 kg
an ocean
your shadow
This will depend on what type of goose. You cannot weigh anything online.
Scientists do not call the sunlight we see everyday anything in particular, just sunlight or visible light. Yet, the sunlight we can not see is Ultra Violet and Infrared Light.
5 18 is a number which is an abstract concept. It does not weigh anything!