Big Bang Theory, Solar System and Spectra

The gas giants are composed primarily of lightweight elements, such as ________________.

Why do the planets that are located close to the Sun not have moons?

The Earth's mass makes up the majority of the solar system's mass.

___________ small, non-icy body made up of rock with a highly eccentric orbit around the Sun

_____ is feature in the spectra of galaxies that indicates that they are moving away from Earth

Stars appear to move in the sky because

Scientists determine the composition and temperature of stars

The four inner planets of our solar system are

What was discovered by accident with a radio antenna at Bell labs in Holmdel, NJ?

_______ is a small, icy body made of ice and rock that has a highly eccentric orbit

Stars are powered by a process called _________ __________.

___________ study of the universe's nature, origin and evolution.

The idea that all matter and energy was compressed into a small volume at one time

The inner planets have greater densities than the outer planets.

How old is the solar system?

Cosmic Background Radiation is detected as ________________ when it reaches us

The dense concentration of gas at the center of the solar nebula eventually became the Sun.

Which was NOT a part of the big bang theory?

_________________ is the force that causes the nebula to become more condensed.

_________ is used as evidence that the universe is expanding.

All of the universe's original supply of hydrogen came from

Explain what is happening in the star's spectrum.

____________ is a large cloud of gas and dust in space where solar systems are born

The universe began as a point, how many years ago?

Which of the following does not support the universe's age?