Estrellas y galaxias: características de las estrellas

The video tutorial explores the identification of constellations, such as Orion and the greater OSA, and their representations in the night sky. It delves into the composition of stars, highlighting the gases and plasma they are made of, and explains how astronomers classify stars based on size, from white dwarfs to supergiants. The tutorial also discusses how the color of stars indicates their temperature, with cooler stars appearing red and hotter ones blue. Finally, it covers the concepts of star brightness and luminosity, which depend on size and temperature.

Which constellation is known to resemble a bear?

• Scorpius

• Cassiopeia

• Greater OSA

• Orion

What are stars primarily made of?

• Metal and rock

• Gases and plasma

• Ice and minerals

• Water and dust

How far does sunlight travel to reach Earth?

• 150,000,000 kilometers

• 1,500,000 kilometers

• 15,000 kilometers

• 150,000 kilometers

What is the term for small stars?

• Blue supergiants

• Red giants

• White dwarfs

• Neutron stars

What color do the hottest stars appear?

• Red

• Blue

• Yellow

• White