The Sun’s energy is generated in a process called

The main red line of hydrogen is at a wavelength of 656nm. An astronomer studying a nebula notices that this line appears at 650nm. Which statement can the astronomer say is definitely true?

Saturn’s rings are made of 

Which moon is considered the most likely to hold life?

Match the planet with the feature that is found only on that planet.

Bands on the surface of Jupiter are different colors because the clouds are made of different chemicals forming at different altitudes.

Bands of clouds on Saturn are muted and blurred because Saturn has less mass than Jupiter.

Which of the following is NOT a prediction of the Solar Nebula Theory of the formation of the Solar System?

Astronomers only study celestial objects with visible light, since it is the only electromagnetic radiation we can see.

All four Jovian planets have similar sizes and masses.