Read the following passage
Even though they are inaudible to the human ear, the stars in the sky perform a concert, one that never stops. The biggest stars make the lowest, deepest sounds, similar to tubas and double basses. Small stars have high-pitched voices, similar to celestial1 flutes. These stars don't just play one "note" at a time either. In fact, our own Sun has thousands of different sound waves bouncing around inside it at any given moment.
Understanding these stellar harmonies represents a revolution in astronomy. "Listening" for stellar sound waves with telescopes, scientists can figure out what stars are made of, how old they are, and how big they are. The technique is called asteroseismology. Just as Earth's seismic waves tell us about the inside of Earth, stellar waves—resulting in vibrations, reveal the secret inner workings of stars.
NASA's Kepler space telescope has been a key player in that revolution. It has delivered observations of waves in tens of thousands of stars since its 2009 launch. NASA's Transiting Exoplanet Survey Satellite (TESS) may observe sound waves in up to one million red giants—the massive, evolved stars that represent what our Sun will look like in about 5 billion years. While both Kepler and TESS are most famous for looking for planets beyond our solar system (exoplanets), they are also powerful tools for detecting stellar vibrations.
Which research question is most useful to find more information about the functions and features of NASA’s Kepler space telescope?
A.
What tools does the Kepler space telescope use to discover exoplanets?
B.
What are the major accomplishments of the Kepler space telescope?
C.
Who designed and engineered NASA's Kepler space telescope?
D.
Who is the chief scientist on NASA's Kepler space telescope?