U2L1 LL Check

Front

How does the IAU categorize constellations?

Back

By defining specific boundaries in the sky for each constellation.

Front

What is a constellation?

Back

A group of stars forming a recognizable pattern.

Front

Which state of matter is a star primarily composed of?

Back

Plasma.

Front

How many constellations is the sky divided into?

Back

88.

Front

What steps would the IAU take to officially recognize a new constellation?

Back

Define precise boundaries in the sky and assign an official name after review.

Front

What is the role of the IAU?

Back

The International Astronomical Union (IAU) is responsible for naming and defining astronomical objects.

Front

What is the difference between a constellation and an asterism?

Back

A constellation is a recognized pattern of stars, while an asterism is a smaller, unofficial grouping of stars.

Front

Can constellations change over time?

Back

Yes, due to the movement of stars and changes in their positions.

Front

What is the significance of constellations in navigation?

Back

Constellations have historically been used for navigation by helping to locate directions.

Front

What is the brightest star in the night sky?

Back

Sirius, part of the constellation Canis Major.