Hurricanes and NASA Problems
Finding the Distance to Stars Using the Parallax Angle
Given the above equation and information provided, about how far away is HT Cas?
133 parsecs
parsecs
parsecs parsecs
Your answer was calculated in parsecs. Given that 1 parsec = 3.2616 light years, about what is the distance to HT Cas in light years? (Your answer in parsecs X 3.2616 light years = The Distance to HT Cas in light years).
light years
217 light years
434 light years
219 light years
Based on your answer, do you think this is a star that we might be able to send a space probe to? Why or why not? Support your answer.
1,287,418,956,726,420 After reviewing some information about probes, I do not think this star is one that we might be able to send a probe to. Voyager 1 is the probe that has gone the furthest in space (Nasa, 2010). It had only gone approximately 10 billion miles in space. The number of light years away that HT Cas is exceeds several hundred trillion miles. Therefore, it is unlikely that man could send a probe that far.
Part 2: Using a Hertzsprung-Russell Diagram
Instructions: After reading the Unit VIII lesson, click here to access the NASA web page "Stars" and answer the questions below using Figure 5. You can also copy and paste the web address into your browser:
http://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve/
Background:
Notice that the stars in Figure 5 are not uniformly distributed. Rather, about 90% of all stars fall along a band that runs from the upper-left corner to the lower-right corner of the H-R diagram. These "ordinary" stars are called main-sequence stars. As you can see in Figure 5, the hottest main-sequence stars are intrinsically the brightest,...
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