rebeccahoward107 rebeccahoward107
  • 24-10-2019
  • History
contestada

How scientist determine the shape of the Milky Way galaxy

Respuesta :

MirelaSanchez2006
MirelaSanchez2006 MirelaSanchez2006
  • 24-10-2019

Astronomers could use radio telescopes to accurately map the positions of these O and B stars and use the Doppler shifts of the radio spectrum to determine their rates of motion. When they did this with many stars, they were able to produce combined radio and optical maps of the Milky Way's spiral arms.

Answer Link

Otras preguntas

A go-karts speed is 607,200 feet per hour. What is the speed in miles per hour
explain how to use a number line to find the opposites of the intergers 3 units away from -7
How do you solve the system of equations for y=2x-4 y=4x-10
what does Eckles find on his boot at the end of the story a sound of thunder
what amendment is the only consitutional amendment that was ratified by approval of conventions in three-fourths of the states?
Graph the points and state whether they are collinear. 1) (0,0), (4,2), (6,3) 2) (-1,1), (2,-2), (4,-3) 3) (-2,0), (0,4), (2,0) 4) (0,0), (6,0), (9,0) 5) (1,2
how would yu write two dozen eggs in a numerical or variable expression?
What happened on May 14, 1948 and May 15, 1948?
Simplify the expression. Write your answer without negative exponents. Assume that the variables represent nonzero real numbers
Suppose that the functions s and t are defined for all real numbers x as follows. s(x) = 2x+4 t(x) = 5x Write the expressions for (s+t)(x) and (s-t)(x) and eva