galaxies

What are galaxies?

• a place in space where gravity pulls so much that even light can not get out

• sprawling systems of dust, gas, stars and dark matter

• the earth's natural satellites

• non-luminous materials that are postulated to exist in space

What are the 3 main types of galaxies?

• spiral, round, triangular

• irregular, rectangular, wide

• elliptical, irregular, spiral

• asymmetrical, round, circular

What are elliptical galaxies characterised by?

• two or more spiral arms extending outwards

• appearing misshapen

• not being able to contain contain up to a trillion stars

• being smooth, having no distinct features

What's the name of the closest galaxy to the Milky Way?

How many galaxies are estimated to be in the observable universe?

• 200 billion

• 100 million

• 4 billion

• 400 billion

Who found a way to classify galaxies?

What will be a result of the merging process of Milky Way and Andromeda?

• a spiral galaxy nicknamed "Milkomeda"

• an elliptical galaxy nicknamed “Milkomeda”

• nothing

• the end of the world

How could the galaxies have been formed?

• gravity pulled dust and gas together to form individual stars, and those stars drew closer together into collections that ultimately became galaxies

• by the death of a massive star

• mass of what would become galaxies drew together before the stars within them were created

• from rocks through the processes of weathering

How fast does the Milky Way rotate?

• about 210 km/s

• about 100 km/s

• about 500 km/h

• about 150 km/s

Where does our Milky Way belong?

• Local Group and Virgo Supercluster

• Virgo cluster and Local Group

• Pleiades and Virgo cluster

• Hyades and Virgo Supercluster