a supernova remnant is now 2.95 pc in radius and is expanding at 3,850 km/s. approximately how many years ago did the supernova occur? ( note 1 pc = 3.1×10^13km and 1year= 3.2 × 10^7 s)
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a supernova remnant is now 2.95 pc in radius and is expanding at 3,850 km/s. approximately how many years ago did the supernova occur? ( note 1 pc = 3.1×10^13km and 1year= 3.2 × 10^7 s)
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- . The radius of the nebula is about 0.401 light-years. The gas is expanding away from the star at a rate of about 37 kilometers/second . Considering that distance = velocity x time, calculate how long ago the gas left the star if its speed has been constant the whole time. Make sure you use consistent units for time, speed, and distance. Answer in years.If an X-ray binary consists of a 16 solar mass star and a neutron Star orbiting each other every 15.4 days, what is their average separation? (Hint: Use the version of Keller's third law for binary stars, Ma + Mb = a^3 /p^2 ; make sure you express quantities in unites of AU, solar masses, and years. Assume the mass of a neutron Star is 1.6 solar masses.) ___________ AUComment on the difference between a nova and supernova. [Note: There are two basic types of supernova.]
- A protostar will continue to collapse due to gravity until it reaches the main sequence, and then gravitational collapse will stop when a. the formation of star-globularsb. atoms degenerate at the core of the starc. the fusion of hydrogen d. the fusion of heliume. the fission of hydrogenWhat evidence is there that star formation has occurred recently?Can you please help with Part 2 of 2? Thank you.
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