Exam 18: The Universe

What is the name of the Sun's outermost solar atmosphere, which can be seen during a solar eclipse?

Six trillion miles is equivalent in distance to one ______________.

A faint white dwarf that temporarily increases in brightness as a consequence of nuclear explosions on its surface is termed

The Sun has an apparent magnitude of about

The three space coordinates that determine a star's position are the

Which of the following represents the longest distance?

The imaginary, huge, apparently moving sphere on which the stars appear to be mounted is called the _______________ sphere.

Clusters containing clusters of galaxies are called ______________.

Taking the reciprocal of a star's parallax angle in arcsec gives the star's

An incredibly dense star so massive that light cannot escape from its surface is called a _______________.

According to the ______________ theory, the universe began from a single point 13.7 billion years ago.

How many constellations encompass the complete celestial sphere?

Patches of cooler material on the Sun's surface are called

Our home galaxy is called the ______________.

The two major types of nebulae are

The most distant known objects in space are called ______________.

The brightest planet has an apparent magnitude of about - 4 and is named

Which of the following is thought to be a black hole?

Familiar groups of stars that are part of a constellation or parts of different constellations are called ______________.

An extremely large collection of stars bound together by gravitational attraction and occupying a huge volume of space is called a(n) ______________.