7 Star ⭐ होटल

If Sun : Star :: Moon : ? A. Star B. Planet C. Comet D. Satellite

Sea Star is

If the rate of emission of energy from a star is 2.7 xx 10^(36) J/ sec, the rate of loss of mass in the star will be

A shooting star is a star.

What is the difference between a star and a shooting star ?

A star of mass M (equal to the solar mass) with a planet (much smaller than the star) revolves around the star in a circular orbit. The velocity of the star with respect to the center of mass of the star-planet system is shown below :

A red star and a green star radiate energy at the same rate which star is bigger.

The two stars in a certain binary star system move in circular orbits The first star alpha moves in an orbit of radius 1.00 xx 10^(9)km The other star beta moves in an orbit of radius 5.00 xx 10^(8)km What is the ratio of masses of star beta to the star alpha ? .

A star is moving towards the earth with a speed of 4 xx 10^(7) m//s . If the wavelength emitted by the star is 500 nm , what would be the change in wavelength received on earth ?

Density of a neutron star is 2.7xx10^(17)kg m^(-3) . Assume the star to be spherical, calculate the radius of the neutron star if its mass is twice the mass of the sun. Take mass of the sun =2.0xx10^(30)kg