line
It is a line.
Through the air, which offers resistance proportional to the speed squared.
Radiation
Radiation
There's no such thing as "motion through space". Motion must be measured relative to another object. So we just measure how fast the other object appears to be moving, and there we go.
It is a line.
It is a line.
It is a line.
Orbital Pathway
Astroids
Through the air, which offers resistance proportional to the speed squared.
It could be a meteor.
i believe they are meteorites
No; light is photons.
A meteoroid.
Radiation
Heat is transferred by energy waves moving through space.