Exam 2: The Science of Life in the Universe

Two comets have identical masses. However, one comet is four times farther from the Sun than the other. According to Newton's Universal Law of Gravitation, the force of gravity exerted by the Sun on the more distant comet is

In the scientific method, what immediately follows a prediction?

Scientists always try to

If a scientific model generates a prediction that is not confirmed experimentally,

Johannes Kepler

The Ptolemaic model has planets moving in

How do Einstein's and Newton's ideas about gravity differ?

Modern science attempts to seek explanations for phenomena that are based on

Which Greek school of thought rejected the possibility of the existence extraterrestrial life and insisted that the world must be unique?

In its elliptical orbit, a planet is closest to the Sun at

The planet Neptune was discovered

Galileo discovered that Venus goes through a cycle of phases like the Moon. This suggested that

A scientist tries to determine why a particular car is getting a much lower gas mileage than claimed by the manufacturer by systematically designing experiments to test possible causes for the problem. This is an example of

In the heliocentric (Sun-centered) model, apparent retrograde motion is due to

Even though the heliocentric model of Copernicus had many advantages over the Ptolemaic model, it suffered from the assumption that the

The discovery of four moons in orbit about Jupiter by Galileo suggested that

In science, new observations are considered to be valid if they

The semi-major axis, a, of an elliptical planetary orbit is equal to the

Kepler's 2nd Law of planetary motion states that

Which Greek school of thought naturally lead to the possibility of the existence extraterrestrial life?