Astronomy Final Study Guide

Front

What is a constellation?

Back

A constellation is a group of stars that forms a recognizable pattern in the night sky, often named after mythological figures, animals, or objects.

Front

How many defined regions or sectors is the sky divided into in modern astronomy?

Back

The sky is divided into 88 defined regions or sectors.

Front

What are the main challenges astronauts face during lunar landing compared to orbiting Earth?

Back

The main challenges include reduced gravity, lack of atmosphere, and extreme temperatures.

Front

In a geocentric model, which object is at the center?

Back

The Earth is at the center of a geocentric model.

Front

How does Betelgeuse compare to our Sun in terms of size, temperature, and luminosity?

Back

Betelgeuse is larger, cooler, and more luminous than our Sun.

Front

What is the difference between a geocentric and heliocentric model?

Back

A geocentric model places the Earth at the center of the universe, while a heliocentric model places the Sun at the center.

Front

What is the significance of the celestial sphere in astronomy?

Back

The celestial sphere is an imaginary sphere surrounding Earth, where all celestial bodies appear to be projected, helping in mapping the night sky.

Front

What is the role of gravity in the formation of celestial bodies?

Back

Gravity pulls together gas and dust in space to form stars, planets, and other celestial bodies.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates light and heat through nuclear fusion.

Front

What is the importance of the Milky Way Galaxy in our understanding of the universe?

Back

The Milky Way Galaxy is our home galaxy, providing insights into the structure, formation, and evolution of galaxies in the universe.