How does the mass of all the interstellar matter in our galaxy compare with the total mass of its stars?
To compare the mass of interstellar matter with the total mass of stars in our galaxy, we need to gather the necessary information and perform some calculations. Here's how you can find the answer:
1. Determine the mass of interstellar matter: Interstellar matter includes various components such as gas, dust, and other particles that exist in the space between stars. The mass of interstellar matter can be estimated by studying the light emitted and absorbed by these particles, as well as their distribution throughout the galaxy. Scientists use a combination of techniques, including spectroscopy, radio observations, and models, to estimate the total mass.
2. Find the total mass of stars in our galaxy: The mass of stars can vary significantly, ranging from relatively small stars like red dwarfs to massive ones like blue giants. To calculate the total mass of stars in our galaxy, astronomers use observations of star populations, stellar evolution models, and statistical analysis.
3. Perform the comparison: Once you have obtained the estimates for the mass of interstellar matter and the total stellar mass, divide the mass of interstellar matter by the total stellar mass and multiply by 100 to express the result as a percentage.
It's worth noting that these calculations are based on estimates and models, as it is challenging to measure the exact mass of interstellar matter and all the stars in our galaxy. However, by following these steps, you should be able to get an approximation of how the two masses compare.