Stars are located at a distance which are measured in terms of light years. Light year is an Astronomical unit used to measure distance between distant Celestial bodies.
1 light year = 9460730472580<span>800 metres
But no star is located at a distance of 1 light year. Some stars are located at millions of light years and light travels ~ 3 x 10</span>⁸ m/s. Thus light takes time to reach our atmosphere.
B. Orbit. The planets orbit the sun, the moon orbits earth, etc.
<span>The device that demonstrates the presence of static electricity
is called a electroscope .</span>
A charged Atom is actually called an ion, this charge occurs due to the indifference of electrons that are found outside the main nucleus of the atom.
