Theoretical astronomy is a lecture and an article. It is part of the astronomy course on the principles of radiation astronomy.

This true-color image shows North and South America as they would appear from space 35,000 km (22,000 miles) above the Earth. Credit: Reto Stöckli, Nazmi El Saleous, and Marit Jentoft-Nilsen, NASA GSFC.

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Quiz

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1 Yes or No, A theory is a statement of how and why particular facts are related.

Yes
No

2 Astronomy is not purely theoretical because of which phenomena?

the Sun
displacements consist of a number plus a dimension such as kilometers
time
a late-summer rainstorm
movement

3 True or False, The expanse of space that seems to be over the Earth like a dome is called heaven.

TRUE
FALSE

4 An entity is an independent, separate, or self-contained

.

5 True or False, Definitions are part of theory because words are part of explanations.

TRUE
FALSE

6 An astronomical theory with no mathematics attached may be which of the following?

an existence
the Sun
a meteorite impact
a late-summer rainstorm
the Moon

7 Evidence that demonstrates that a model or idea versus a control group is feasible in theoretical astronomy is called a

.

8 True or False, A phenomenon is an observable fact or event.

TRUE
FALSE

9 Which of the following is not an idea?

2
the Sun
radius
sky
heavens
orbit

10 True or False, A control group may be used in theoretical astronomy to demonstrate no effect or a standard effect versus a novel effort applied to a treatment group.

TRUE
FALSE

11 Complete the text:

Match up the theoretical astronomy idea with each of the possibilities below:
astronomical object - A
astronomical source - B
astronomical entity - C
star - D
interstellar medium - E
material - F
natural luminous body visible in the sky

.
naturally from which something comes

.
matter which may be shaped or manipulated

.
an independent, separate, or self-contained existence

.
the matter that exists in the space between the star systems

naturally in the sky especially at night

.

12 If astronomy measures distances and speeds then what is mass?

an idea
a number
many distances
the sky
heavens
an orbit

13 True or False, The purpose of a treatment group in theoretical astronomy is to describe natural processes or phenomena for the first time relative to a control group.

TRUE
FALSE


Hypotheses

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  1. Binary stars are as equally likely to be formed by fission as by fusion.

See also

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{{Principles of radiation astronomy}}{{Radiation astronomy resources}}