Our galaxy is

Our Milky Way galaxy is identified as an elliptical galaxy.

Ture or False -If False give the coorect answer Our Milky Way galaxy is identified as an elliptical galaxy.

To which star family or galaxy does our solar system belong?

A very long (length L) cylindrical galaxy is made of uniformly distributed mass and has radius R (R lt lt L) A star outside the galaxy is orbiting the galaxy in a plane perpendicular to the galaxy and passing through its centre. If the time period of star is T and its distance from the galaxy's axis is r, then-

A very long (length L) cylindrical galaxy is made of uniformly distributed mass and has radius R (R lt lt L) A star outside the galaxy is orbiting the galaxy in a plane perpendicular to the galaxy and passing through its centre. If the time period of star is T and its distance from the galaxy's axis is r, then-

A very long (length L) cylindrical galaxy is made of uniformly distributed mass and has radius R (R lt lt L) A star outside the galaxy is orbiting the galaxy in a plane perpendicular to the galaxy and passing through its centre. If the time period of star is T and its distance from the galaxy's axis is r, then-

The distance of a galaxy is of the order of 10^(25)m . Calculate the order of magnitude of time taken by light to reach us from the galaxy.