Galaxies
Our galaxy is known as the ____
Milky Way
What are comets believed to be made of?
Mixture of ice, rock and dust.
How is a black hole formed?
What are stars made of?
Stars are made of hydrogen and helium
Which is the closest planet to the earth?
Mercury
Do galaxies rotate?
Yes
A long period comet is a comet with a period of 200 years or more. True Or False?
True
What pulls objects into a black hole?
A strong gravitational force
Which sort of star is the sun?
Our sun is a main sequence star, which is the most common type of star
Which is the smallest plant in the solar system?
Mercury
The __ instrument discovered more than 10,000 galaxies is called?
Hubble Space Telescope
What did the ancient Greeks call comets?
True
What is the biggest type of star?
Supergiants
What is the sun mainly made from?
Mainly made from hydrogen and helium gas
More than two-thirds of all observed galaxies are ___
Spiral Galaxies
Which comet has the shortest known orbital period?
Comet Encke
What surrounds a black hole?
Which is the closest star to the Sun?
Proxima Centauri
Where is the asteroid belt?
It's located between Mars and Jupiter
What is interstellar space?
The space between stars is known as interstellar space.
In the twentieth century, most comets were named using which convention?
After their discoverer
What is the area surrounding a black hole called?
Event horizon
What is a pattern of stars identifiable in the night sky called?
Constellation
What is the Great Red Spot on Jupiter?
A storm