Table 1: Outer region selected stars data Star Orbital radius of star Measured speed (x 10° m/s) Using Doppler Calculated speed (x 10° m/s) Using UCM and UGL Measured gravitational mass (x 10" kg) Missing Mass (%) (x 10" m) Using UCM and UGL and the Effect measured speed |1.85 |2.75 2.47 2.40 "A" "B" "C" 3.18 2.37 "D" | 4.26 2.25 "E" 6.48 2.47 Complete the last three columns of this table using your knowledge of universal gravitational law and circular motion. Show and explain samples of calculations for each column.
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.
Step by step
Solved in 4 steps with 6 images
