Exam 18: The Universe

The ______________ is the name given to all matter, energy, and space.

Our home galaxy is called _______________.

The sunspot cycle has a period of

The ______________ is the remnant of a supernova explosion observed in A.D. 1054.

The closest star to the Sun is named

Astronomers measure stellar distances in three different units. The smallest of these is

Hubble's law is the major basis for the concept that the universe is

If the magnitude difference between one star and another is 1, the stars differ in brightness by a factor of

A point in the universe where the density of matter and the gravitational field are theoretically infinite is called a _______________.

The three fusion reactions in the Sun that form helium from hydrogen are together called the

If the magnitude difference between one star and another is 7, the stars differ in brightness by a factor of

The creation of elements inside a star is called ______________.

The dying glow of the Big Bang is called the ______________.

What is the pseudoscience that contends the planets' positions in the sky at the time of a person's birth affect the individual's personality or future?

Polaris, the pole star, is 208 parsecs away. Calculate the distance to Polaris in kilometers.

The angular measurement in hours, minutes, and seconds from the celestial prime meridian eastward is called _______________.

Which of the following is an irregular galaxy that can be seen from the Southern Hemisphere?

An incredibly dense star so massive that light cannot escape from its surface is called a(n) ______________.

The angular measurement in hours, minutes, and seconds from the celestial prime meridian eastward is called ______________.

The "surface" of a black hole is known as the _______________.