What Was the FIRST Direct Evidence That Some Other Solar-Type

question 10

Multiple Choice

What was the FIRST direct evidence that some other solar-type stars might have planets?

• A) faint pinpoints of light slowly circling some stars, as seen through the new 8- and 10-meter telescopes
• B) slightly wavy path of a star through space, as if the star were being tugged by an orbiting planet
• C) cyclic Doppler shift variations in the spectra of several stars
• D) warped disks of dust and gas around some young stars

---

Definitions:

Diaphysis

The central shaft of a long bone, distinct from the ends of the bone, which are called epiphyses.

Condyle

A rounded protuberance at the end of some bones, forming an articulation with another bone.

Osteoblasts

Cells responsible for bone formation, playing a crucial role in bone growth and repair.

Achondroplasia

A genetic disorder affecting bone growth, leading to dwarfism due to shortening of the limbs but with a normal-sized torso.