Sun is a star. , 6 | Our Earth BIOLOGY NAVBODH | Doubtnut

Our star sun lies

The Earth moves around the Sun in an elliptic trajectory due to gravity. If another Sun like star is brought near the Earth, what will be the shape of the trajectory ?

Name the star nearest to the Earth.

Let a star be much brighter than our sun but its mass is same as that of sun If our earth has average lift span of man as 70 years In the earth like planet of this star system having double the distance from our star find the average lift span of a man on this planet in terms of our year .

In a certain binary star system, each star has the same mass as our sun. They revolve about their centre of mass. The distance between them is the same as the distance between earth and the sun. What is their period of revolution in years ?