Structure of Stars and the Universe

Front

What is the brightest star in the night sky?

Back

Sirius is the brightest star in the night sky.

Front

What is the Main Sequence in the context of stars?

Back

The Main Sequence is the location on the H-R diagram where most stars lie.

Front

What layer of the sun is visible during a solar eclipse?

Back

The corona is the outer layer of the sun visible during a solar eclipse.

Front

What layer of the sun do we see when we look at it directly?

Back

We see the photosphere when we look at the sun directly.

Front

What is a solar flare?

Back

A solar flare is a brief eruption of intense high energy of gas from the sun.

Front

What is the core of a star?

Back

The core is the innermost layer of a star where nuclear fusion occurs.

Front

What is a binary star system?

Back

A binary star system consists of two stars that orbit around a common center of mass.

Front

What is a parsec?

Back

A parsec is a unit of distance used in astronomy, equal to about 3.26 light-years.

Front

What is the photosphere?

Back

The photosphere is the visible surface of the sun that emits light.

Front

What is the chromosphere?

Back

The chromosphere is a layer of the sun's atmosphere located above the photosphere.