Why Is It Easier to Use Doppler Shifts to Discover

question 2

Multiple Choice

Why is it easier to use Doppler shifts to discover binary stars than to discover planets orbiting other stars?

• A)The orbital periods of binary stars are longer than those of planets
• B)The Doppler shifts are very small in the case of planets
• C)For planets the shifts are so large they shift the lines out of the visible
• D)Stars orbited by planets do not generally show spectral lines

---

Definitions:

Melanoma

A type of skin cancer that develops from the pigment-producing cells known as melanocytes, noted for its potential to spread rapidly if not treated early.

Ordinary Mole

A small, colored spot on the skin that is usually harmless and formed from clusters of melanocytes, the cells that produce pigment.

Large Blister

A fluid-filled bump on the skin of significantly large size, often resulting from friction, burns, or other injuries.

Bulla

A large blister or skin vesicle filled with fluid, often appearing as a symptom of various diseases or skin conditions.