What is the science that deals with objects and matter outside the earth's atmosphere and their properties?

What is a sphere of very hot gasses, usually made up of hydrogen and helium called?

Who developed a heliocentric model of the solar system, thus discovering that the Earth revolved around the sun?

What is a term that includes the Earth, the solar system, every galaxy, and everything else?

Which planet is closest to the sun in the Solar System?

What process in the Sun turns hydrogen atoms into helium atoms and releases a lot of energy>

What is a place where gravity pulls so strongly that nothing can escape - including light?

During the Cold War, which 2 nations competed to see who had the best space technology?

What is the part of the universe that scientists can see?

What is the hottest planet in the Solar System?

How long ago was the formation of the planets in the Solar System?

After running out of hydrogen, stars expand to become what?

What are the two main properties of a telescope?

Approximately, how many light-years across is the observable universe?

How many moons does Neptune have?

The discovery of a specific object, another dwarf planet, caused skepticism as to whether Pluto should be considered a true planet anymore in the debate a few years ago. What was this object called?

The Milky Way is part of a cluster of about 3,000 other galaxies called the ____?

What group of people created the most accurate and complex calendars of the ancient world?

How much distance can light travel in one light year?

One of the largest storms on Jupiter is ______, which has existed on the planet for more than 300 years.

What moon of Pluto's is half its size?

In 4.5 billion years, the Andromeda Galaxy and the Milky Way are expected to collide and create an enormous ____?

What program was started by America to put the first man on the moon?

About what percentage of the universe is made up of dark matter?

A year on Uranus is how many times longer than one on Earth?