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Chapter 8: Problem 23

Summarize the differences between the planets of our solar system and those found orbiting other stars.

Short Answer

Expert verified
Differences between planets in our solar system and exoplanets include their composition, size, atmosphere, and orbital characteristics. For instance, while planets in our solar system are either rocky or gaseous, exoplanets can also be 'hot Jupiters' or 'super-Earths'. The host stars of exoplanets can also differ significantly from our Sun in terms of size and temperature.

Step by step solution

01

Understanding the Planets in Our Solar System

Begin by gathering information about the planets in our solar system. This includes their composition (rocky or gaseous), size (diameter and mass), atmosphere contents, and how they orbit the Sun (distance, shape of orbit, etc.)
02

Understanding Exoplanets

Next, collect information about exoplanets. This may include data from NASA's exoplanet archive or other scientific sources. Look for information about their composition, size, atmospheres, and details about their host stars and how they orbit them.
03

Comparing Solar System Planets and Exoplanets

Using the information collected in Steps 1 and 2, draw a comparison between the planets in our solar system and those orbiting other stars. This might entail comparing their respective sizes, compositions, atmospheres, orbital patterns, and the characteristics of their host stars.

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Most popular questions from this chapter

Use the Stamy Night Enthusiast \({ }^{\mathrm{TM}}\) program to investigate stars that have planets orbiting them. First display the entire celestial sphere (select Guides > Atlas in the Favourites menu). Then use the Find pane to find and center each of the stars listed below. To do this, click the magnifying glass icon on the left side of the edit box at the top of the Find pane and select Star from the dropdown menu; then type the name of the star in the edit box and press the Enter or Return key on the keyboard. Click on the Info tab on the left-hand side of the Starry Night Enthusiast 'M window for full information about the star. For each star, record the luminosity of the star (a measure of the star's total light output). How far from Earth is each star? Which stars are more luminous than the Sun? Which are less luminous? How do you think these differences would have affected temperatures in the nebula in which each star's planets formed (see Figure 8-10)? (i) 47 Ursae Majoris; (ii) 51 Pegasi; (iii) 70 Virginis; (iv) Rho Coronae Borealis.

How do radioactive elements make it possible to determine the age of the solar system? What are the oldest objects that have been found in the solar system?

What are the competing models of how the Jovian planets formed?

What is a planetesimal? How did planetesimals give rise to the terrestrial planets?

Is there evidence that planets have fallen into their parent stars? Explain.
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