Short Answer
Astronomers have defined a(n) _______________ around a star as a region within which planets that orbit there have temperatures permitting the existence of liquid water.
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q19: A unique property of water is that
Q20: The most likely first form of life
Q21: In all living things on Earth, the
Q22: A(n) _ can thrive in extreme conditions,
Q23: Was oxygen a part of Earth's early
Q25: Half the stars in the Milky Way
Q26: Why do astronomers narrow their search to
Q27: A low-luminosity star has a small and
Q28: Earth sends out more signals into space
Q29: Earth required only 1 million years to