Exploring Sirius: The Brightest Star

What is the distance of Sirius from our solar system?

• 15.8 light years

• 4.2 light years

• 8.6 light years

• 12.3 light years

Which type of star is Sirius B classified as?

• Red giant

• Main sequence star

• Neutron star

• White dwarf

How often do Sirius A and B orbit each other?

• Every 50 years

• Every 100 years

• Every 25 years

• Every 10 years

What is the approximate temperature of Sirius A?

• 12,500 Kelvin

• 10,000 Kelvin

• 7,500 Kelvin

• 5,000 Kelvin

In the Hertzsprung-Russell diagram, how does Sirius A compare to the Sun?

• Sirius A is cooler and brighter

• Sirius A is hotter and dimmer

• Sirius A is hotter and brighter

• Sirius A is cooler and dimmer

What is the nickname given to Sirius B?

• The Giant Star

• The Pup Star

• The Red Star

• The Blue Star

Which of the following is NOT brighter than Sirius in the night sky?

• Betelgeuse

• Mars

• The Moon

• Jupiter

Which constellation is used to help locate Sirius in the night sky?

• Cassiopeia

• Orion

• Ursa Major

• Scorpius

What is the name of the asterism that includes Sirius?

• Summer Triangle

• Winter Triangle

• Autumn Triangle

• Spring Triangle

Which star is NOT part of the Winter Triangle?

• Polaris

• Procyon

• Betelgeuse

• Sirius