Unit 6 vocabulary

The ​ (a)   gazed through the telescope, searching for signs of distant planets.

• astronomer
• dust
• valley

Good observational skills are a key ​ (a)   for working in space science.

• requirement
• instruments

Using advanced instruments, scientists can now ​ (a)   planets orbiting other stars.

• detect
• ignore
• destroy
• confuse

The sudden change in star brightness was taken as ​ (a)   of an exoplanet passing in front of it.

• proof
• evidence
• indication
• signal

Understanding the laws of motion is ​ (a)   to grasping how celestial bodies interact.

• fundamental
• optional
• irrelevant
• secondary

Interstellar ​ (a)   can obscure our view of faraway galaxies.

• dust
• plain
• valley

The ​ (a)   expanse of space makes it difficult to explore even a small part of the universe.

• vast
• fundamental

I often ​ (a)   if intelligent life exists elsewhere in the cosmos.

• wonder
• interested
• lead to

Minor shifts in gravitational pull can ​ (a)   major changes in a planet’s orbit.

• lead to
• detect

The ​ (a)   found it thrilling to explore the ​ (b)   unknown and ​ (c)   what discoveries might ​ (d)   new ​ (e)   of life beyond Earth.

• astronomer
• vast
• wonder
• lead to
• proof