Show:
Universal Phenomena
Planets
Structure of the Universe
Galaxies
Technology
100
This is responsible for holding the stars, gas, and dust together in the galaxy.
What is gravity
100

This is the period of time it takes a planet to complete a full day.

What is a rotation?

100
This is the term used to describe a group of billions of stars.
What is a galaxy?
100

This is an older galaxy that no longer produces stars.

What is an elliptical galaxy?

100

This is one major advantage space shuttles have over earlier probes and space capsules.

They are reusable.

200

This phenomena describes how closer objects appear to move faster than farther away objects.

What is parallax?

200
This property of the gas giants accounts for their having more moons.
What is a greater mass and thus have a greater gravitational force?
200

List the following objects in space in order from largest to smallest: star, planet, galaxy, universe.

What is universe, galaxy, star, planet?

200

This is a galaxy that is deformed, usually containing newer stars and lots of space dust.

What is an irregular galaxy?

200

The reason we put telescopes in space.

The atmosphere does not affect observation

300

This is what all stars and star systems start as.

What is a molecular cloud?

300
The inner planets have this type of surface. (gas, ice, liquid, solid)
What is solid?
300
This term is used to describe a star that has several smaller bodies orbiting it.
What is a solar system?
300

The Milky Way is this type of galaxy

What is a spiral galaxy?

300

This telescope observes large wavelengths of electromagnetic radiation

What is a radio telescope?

400
If a star is 300 light-years from Earth, how long does it take light from that star to reach Earth?
What is 300 years?
400
Mercury's year is 88 days long, about 1/4 as long as a year on Earth. This is why Mercury's year is so short.
What is Mercury's orbit is the shortest and closest to the Sun's gravity?
400

A star system with two stars orbiting each other.

What is a binary star system?

400

This is a newer galaxy with a massive black hole in the center that radiates high energy particles.

What is a quasar?

400

The reason telescopes are better at observing stars than just eyes.

They are better at gathering and focusing light than eyes are.

500

The best way to determine how far away a spacecraft is, such as the Voyager I

How long light takes to travel between Earth and the spacecraft

500
The sun generates energy by Nuclear fusion. Name the element that combines to form larger atoms in Nuclear fusion.
What is Hydrogen?
500

This is how we are able to determine the existence of a binary star system.

The brightness of the star system lowers as the dimmer star passes in front of the brighter star.

500

This is the closest large galaxy to our own.

What is Andromeda Galaxy?

500

This type of telescope collects high frequency light waves from things like quasars and pulsars

What are xray/gamma ray telescopes?