Astronomy | Astrophysics Answers

The graph shows that the average hours of daylight is greatest in month six, explain in full using scientific knowledge, why this is

The luminosity of a star is 10 times, the luminosity of the Sun. Calculate the difference in their absolute magnitudes.

Star A on apparent magnitude of 7, and its light intensity is 100 times dimmer than that of star B, what is the apparent visual magnitude of star B?

NASA wants to launch its satellite around an asteroid to make observations. It wants the satellite to be over the same location every 24 hours. If Kepler’s constant, k, is 0.5 hr^2/m^3 , what distance from the center of the asteroid must the satellite be placed?

A proton is in moving in a circular orbit radius 14cm I a uniform 0.35T magnetic field perpendicular to the velocity and proton find speed of proton

A proton is in moving in a circular orbit radius 14cm I a uniform 0.35T magnetic field perpendicular to the velocity and proton find speed of proton

Calculate the speed it takes a celestial particle to move from Jupiter to Pluto.  

Suppose two stars obey1mass luminosity relationship.one star is four times as massive as the other.how do the luminosities of the two stars compare??

A satellite weighing 1600 kg revolves aroundt the Earth in an orbit radius three times that of the Earth.If the radius of the Earth is 6.4x10⁶m,what is the centripetal force acting on the satellite?

At what distance does a star have an apparent magnitude that is 5 magnitudes brighter (smaller) than its absolute magnitude?