Why Do We Say That the Doppler Technique Gives the Planet's

question 31

Multiple Choice

Why do we say that the Doppler technique gives the planet's "minimum mass"?

• A)The size of the Doppler shift that we detect depends on whether the planet's orbit is tilted.
• B)The size of the Doppler shift that we detect depends on knowing the star's mass,which can be very uncertain.
• C)Extrasolar planets are always increasing in mass.
• D)Doppler measurements are very difficult,producing noisy data that often cause astronomers to underestimate a planet's mass.

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Definitions:

Egocentrism

The inability to differentiate between one's own viewpoint and that of others, often seen in early childhood development.

Conservation

The protection, preservation, management, or restoration of natural environments, cultural heritage, and biodiversity.

Autism Spectrum Disorder

A developmental disorder characterized by difficulties in social interaction and communication, along with restricted and repetitive patterns of behavior or interests.

Simon Baron-Cohen

A British clinical psychologist and professor known for his work on autism spectrum conditions, including the development of the theory that autism involves degrees of "mindblindness" or delays in the development of theory of mind and empathy.