The average speed is the ratio between the total space and the total time of the motion: The total space is while the total time is So, the average velocity is
We can also rewrite it in m/s. The total space is , while the time is , and so
ALMA is a trans-formative radio telescope that can study cosmic light that straddles the boundary between radio and infrared. Most objects in the Universe emit this kind of energy, so the ability to detect it has been a driver for astronomers for decades.