Calculate the solar energy flux (energy received per unit area por unit timo), as seen from a distance of 4 pc from the Sun Express your answer in watts per square meter to two significant figures. Templates F4.0-10-20 Part B Ad Submit Previous Answers Request Answer X Incorrect Try Again: 5 attempts remaining P undo do roset keyboard shortcuts help ( solar constad Compare your answer with the solar constant at Earth Express your answer using two significant figures. Submit W/m² hep Templates Symbols undo rado reset keyboard shortcuts ATA Answer

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Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.