Universe & The Galaxy
What is everything that exists, including space, time, matter, and energy?
The Universe
What is at the center of the Solar System?
The Sun
Which planet is the smallest?
Mercury
How much of Earth is covered by water?
About 71%
What are natural satellites?
Objects that orbit planets (like moons)
What is the name of the galaxy we live in?
The Milky Way
What are the two main types of planets?
Rocky (Terrestrial) and Gaseous (Jovian) planets
Which planet is the hottest?
Venus
How many moons does Earth have?
One
What are asteroids made of?
Rock and metal
What are huge clouds of gas and dust in space where stars are born?
Nebulae
Which planets are known as Gas Giants?
Jupiter and Saturn
Which planet is known as “the red planet”?
Mars
What makes Earth unique among the planets?
It has life
What are meteoroids?
Small rocks or metal fragments traveling through space
What are groups of stars that move together in the same region of space called?
Star clusters
Which planets are called Ice Giants?
Uranus and Neptune
Which planet has the tallest mountain in the Solar System?
Mars
How long is one day on Mercury compared to Earth?
Almost 60 Earth days
What is a supernova?
A huge explosion of a star at the end of its life
What is a region in space with gravity so strong that nothing can escape it?
A black hole
What are comets made of?
They are made of ice, dust, and rock.
Which planet spins in the opposite direction as Earth?
Venus
How long is one year on Uranus compared to Earth?
About 83 Earth years
What are gamma ray bursts?
Extremely powerful flashes of energy in space