6th Grade Science Week 21 Vocabulary Review

Proved black holes, the theory of relativity, and that the universe has no boundary.

Discovered other galaxies that exist and a telescope was named in his honor.

Developed the Laws of Motion, which were used to explain interactions between celestial bodies.

Discovered that the frequency of light and sound waves depends on the speed of the observer.

Created the 1st model of the Solar System, despite believing the universe was geocentric.

A popular educator in astronomy, known for pushing to get Pluto demoted as a planet.

Discovered that the sun, not Earth, was the center of our solar system (heliocentric).

Discovered that the paths of the planets around the sun are elliptical rather that circular.

Proved Heliocentric theory by being the first person to use a telescope to study space.

Made major strides in Physics that helped pave the way for space exploration.

Scientist who first calculated the occurrences of a comet, which was later named after him.

Worked as a consultant to NASA, and was the first to approximate the temperature on Venus.