Definitions
A collection of planets and their moons that orbit around a star, together with smaller bodies in the form of asteroids, meteoroids and comets.
Solar System
On which planet is the Great Red Spot?
Jupiter
The Big Bang theory states that the universe exploded in all directions from a ________ point.
Single
Recognisable patterns made by groups of stars
Constellations
HST stands for...
Hubble Space Telescope
Stars are huge glowing balls of gas, mainly made up of _________ and __________. (Gases)
Hydrogen and Helium
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Hubble's Law states that the universe is...
Expanding
What colour are the hottest stars typically?
Blue
What can affect the view from optical telescopes?
Light pollution or Earth's atmosphere
An enormous collection of gas, dust and stars in space held together by gravity.
Galaxy
How many moons does Saturn have?
50
What is one thing that happened minutes after the Big Bang?
- Universe inflated
- Universe cooled
- Protons and neutrons born
It is predicted there are at least 10 million _________________ in the Milky Way.
Black Holes
What invention revolutionised astronomy?
Optical Telescope
A giant cloud of dust and gas in space. They are also regions where _____ form.
Nebula, stars.
On which planet is gravity half as strong as on Earth?
Mars
Name another 2 theories of the origin of the universe.
Steady-State, Eternal Inflation, Creation, Oscillating universe
What are the 4 types of galaxies and the letters assigned to them?
Elliptical (E), Spiral (S), Barred Spiral (BS), Irregular (Irr or I)
What telescope was launched in 2021?
James Webb Space Telescope
A light year is approximately ______ kilometres?
9.46 trillion
Why is Mercury cooler than Venus?
Atmospheres - Mercury has no atmosphere to trap heat
What are the 3 major pieces of evidence for the Big Bang?
Hubble's Law, Doppler Effect, Cosmic Background Radiation
What are the potential last 3 stages of the life cycle of stars?
White dwarf, neutron star, black hole
What do radio telescopes observe?
Radio waves