Universe and Stars

Front

What is a solar flare?

Back

A sudden eruption of gas and energy particles on the surface of the sun.

Front

What is the best unit of measurement for distances between stars?

Back

Light year.

Front

What does 1 Astronomical Unit (AU) measure?

Back

The distance from the Earth to the Sun.

Front

What are sunspots?

Back

Dark spots on the surface of the sun.

Front

Which color of star is the coolest?

Back

Red.

Front

What are solar winds?

Back

Streams of charged particles released from the sun's atmosphere.

Front

What is the temperature of blue-white stars?

Back

They are among the hottest stars, with temperatures exceeding 10,000 degrees Celsius.

Front

What is the significance of light years in astronomy?

Back

Light years measure the distance that light travels in one year, used to express astronomical distances.

Front

What are prominences?

Back

Large, bright features extending outward from the sun's surface, often associated with solar flares.

Front

How do we define a star?

Back

A massive, luminous sphere of plasma held together by gravity, undergoing nuclear fusion.