The universe

How long have people been studying Space?

• Centuries

• Decades

• 1 millennium

• Years

How big is the observable universe in diameter?

• 93 billion light-years

• 4.5 billion light-years

• 13.51 billion years

• 2 trillion light years

How many galaxies are there in the observable universe?

• 2 trillion 

• 5 trillion

• Around 100,000

• 68 million

How much of our universe is made up of dark energy?

• 68%

• 27%

• 5%

• 13%

How old is the Milky Way?

• 13.51 billion years old

• 93 billion years old

• 828 trillion years old

• 4.5 billion years old

How large is the Milky Way in diameter?

• 100,000 light-years

• 110 km

• 4.5 billion light-years

• 828,000 km

What is the biggest known galaxy in the Local Group?

• The Milky Way

• Andromeda

• Milkomeda

• Alcyoneus

How many planets are there in the milky way?

• Around 100 billion

• Around 514,000

• Around 100 million

• 13.51 billion

How many neutron stars and black holes are there in the Milky Way?

• Around 100 billion

• Around 514,000

• Around 100 million

• 13.51 billion

What is the speed of our galaxy? (Check all the correct options)

• 514,000 mph

• 828,000 km/h

• 110 km/s

• 514,000 km/s