This is an unusual question... If you mean how long does it take for an HEP station to come online and get up to full power it is exceptionally fast. You can be generating GW (billions of Watts) within a …

How are Kepler's Laws important to astronomy? What does it mean to say Keplers laws are empirical in nature? In a binary star system, a small white dwarf orbits a companion with a period of 52 years at a …

There is a relation between pulsation period and luminosity of variable Cepheid stars. Due to this relation Cepheid variables can be used a standard candle to estimate distance to stars.picture credit …

Does NASA have any satellites or probes that are taking constant footage of the earth? How does the Hubble Space Telescope take pictures? How long does it take it to take one photo? How do …

Larger stars have shorter lifetimes and tend to have more violent ends. Stars less than 8 solar masses are quite long lived. The fuse Hydrogen into Helium for much of their lives. When the supply of …

Angular momentum and centrifugal force. IF a planet does not have a completely solid form, the forces on its spinning form will cause the equatorial regions to move outward relative to to the spin axis. …

The Theory explains the observations of an expanding Universe and the background radiation. It explains how the present Universe came into existence but not the origin of matter/energy. Edwin …

Jan 6, 2016 · we have a natural lens in front of eye. We see images because this help us to see. Sun rays have heat and UV rays in them If concentrated by focusing .It is sufficient to burn a small hole in …

We need a time machine to see in the past and luckily we have got a time machine i.e LIGHT. Any galaxy or nebulae or quasar or a star is 12 billion light years far means that it need 12 billion years …

The axis of rotation 23.4 degree is not changing. The angle at which Sun light strikes on Earth's surface changes due to tilt of axis.. During January Sun light does not fall ,on north polar area. But the South …