I think it is because The Universe is so GIANT that earth measures just aren't enough. I hope I helped!
They use lightyears and AU (Astronomical Units). They use kilometers, AU's and light years!! *Parsecs are also commonly used
Temp.,Size, Brightness, And How Many LightYears Away The Star Is.
They use lightyears and AU (Astronomical Units). They use kilometers, AU's and light years!! *Parsecs are also commonly used
scientists frequently use Celsius
The name for the units scientists use for circles are degrees.
To measure temperature, scientists use:KelvinCelsiusFahrenheit.
Generally they use the SI system
If they are sensible, they will use those units defined and agreed by the International Standards Organization (ISO), as these will be universally understood and normally are required to be used in scientific publications.
Why scientist use SI unitsSo all scientists no matter what country their in can do the experiment and know how much of a specific material to use. It is because the length of each person varies.But SI units show exact length whenever it is taken.
The SI, or International System.
The units that scientists use to measure temperature are: Celsius Fahrenheit Kelvin
To measure temperature, scientists use:KelvinCelsiusFahrenheit.