Author Question: What must be true in order for astronomers to be able to use the Doppler technique to determine a ... (Read 13 times)

lb_gilbert · **on:** Jul 27, 2018

What must be true in order for astronomers to be able to use the Doppler technique to determine a planet's mass?

A) The planet's orbit must be viewed nearly edge on.
B) The planet must have a very low mass.
C) The planet must have a very eccentric orbit.
D) The planet's orbit must be seen nearly face on.

Question 2

How will an isolated, one solar-mass star die?

A) as a neutron star
B) as a black hole
C) as a white dwarf supernova
D) as a white dwarf
E) uncertain, since stars can die in any number of ways