Exploring the Stars

What is the effect where the position or direction of an object appears to differ when viewed from different positions?

• Distance

• Arc Seconds

• Parallax

• Luminosity

The parallax of the star Alpha Centauri is measured to be 0.74 arcseconds. Calculate the distance to the star in parsecs.

• 1.0 Parsecs

• 1.53 Parsecs

• 1.35 Parsecs

• 2.3 Parsecs

What is a scale of how bright an object appears to be in the sky as we see it?

• Apparent Magnitude

• Absolute Magnitude

• Luminosity

• Brightness

What is a scale indicating how bright an object actually is and how bright it would appear if it was at a standard distance from Earth?

• Apparent Magnitude

• Absolute Magnitude

• Luminosity

• Brightness

Which type of star has a radius 100 to 1000 times the Sun?

• Dwarf

• Giant

• Supergiant

• Hypergiant

Which type of star has a radius similar or smaller than the Sun.

• Dwarf

• Giant

• Supergiant

• Hypergiant

These "failed stars" are more massive than planets but do not have the pressures of temperatures strong enough to start nuclear fusion. 

• Dwarf

• Giant

• Supergiant

• Brown Dwarf

These types of stars are the most common in the Universe and will not pass through a Red Giant phase in the lifecycle. They will potentially be the last stars shining in the universe. 

• White Dwarfs

• Red Giants

• Red Dwarfs

• Brown Dwarfs

This type of nebula is a cloud of high temperature gas. Within this type of nebula, a star energizes the atoms in the cloud with ultraviolet radiation.

• Emission Nebula

• Reflection Nebula

• Dark Nebula

• Planetary Nebula

• Supernova Remnant

This type of nebula does not emit radiation of its own. It is a cloud of dust and gas that reflects the light energy from a nearby star or group of stars. 

• Emission Nebula

• Reflection Nebula

• Dark Nebula

• Planetary Nebula

• Supernova Remnant