You would like to know if a star is coming towards you or away from you. Therefore, you will need to obtain the star's _______________ from its shifted spectra

Fill in the blank(s) with correct word


radial velocity

Physics & Space Science

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What are possible reasons that galaxies differ in form?

A.) Pre-galactic clouds have different densities. B.) Pre-galactic clouds have different rotation rates. C.) Galaxies collide with one another, creating different types. D.) All of the above. E.) A and B.

Physics & Space Science

Glaciers will retreat when the amount of accumulation

A) is less than the amount of ablation each year. B) exceeds the amount of ablation each year. C) is equal to the amount of ablation.

Physics & Space Science

The energy of a photon:

A) is inversely proportional to the frequency of the light. B) is inversely proportional to the wavelength of the light. C) depends only on the speed of the light. D) depends only on the mass of the photon.

Physics & Space Science

Neutron stars are 100,000 times denser than white dwarfs

Indicate whether the statement is true or false

Physics & Space Science