Although mass transfer can occur in binary stars, the small mass ...

[tingc95]

Although mass transfer can occur in binary stars, the small mass change does not impact the evolution of either companion.
 
  Indicate whether the statement is true or false

Question 2

How do we know that there can only be insignificant amounts of dark matter in our solar system?
 
  What will be an ideal response?

[olderstudent]

Answer to Question 1

FALSE

Answer to Question 2

We can measure the distribution of mass in the solar system through analysis of its rotation curve, i.e. the velocity at which planets at different distances from the Sun rotate, in an analogous way to the rotation curves of galaxies. Since the rotation curve of the solar system decreases with increasing distance in the same way that we would predict for a central mass (the Sun), we infer that there are no hidden sources of gravitational mass in the solar system. Dark matter must be distributed over much larger scales.

[tingc95]

Thank you!

[olderstudent]

Always glad to help...