Hubble's law is related to:

The hottest planet of the solar system is

The image shows a diagram of the solar system. Which of the following correctly identifies the planets in the order of their distance from the Sun?

When the original mass of a star is greater than $5\, M$ ($M =$ mass of the sun),the death of this star will give rise to:

Meteors are

According to Hubble's law,the redshift $(Z)$ of a receding galaxy and its distance $r$ from Earth are related as