Multiple Choice
Comets have been discovered around the star Beta Pictoris through
A) emission from gas evaporated when the comets pass close to their star.
B) impacts on the system's gas giants.
C) their gravitational effects on the system's small planets.
D) obscuration caused by dust evaporated from the comets' nuclei.
Correct Answer:
Verified
Correct Answer:
Verified
Q59: Astronomers have searched for extrasolar planets for
Q60: A particular star shows spectral lines of
Q61: An exoplanet discovered through the transit photometry
Q62: What is thought to be the physical
Q63: An exoplanet detected through microlensing causes<br>A) variations
Q65: MOST protostars are surrounded by<br>A) gas giants.<br>B)
Q66: Which of these exoplanet characteristics is MOST
Q67: An asteroid belt has been discovered around
Q68: In searches for planets orbiting stars other
Q69: Observations of the exoplanet HD 209458 b