Planets
Which is the planet nearest to the sun?
Mercury is the nearest planet to the sun
What are Asteroids Made of?
They probably consist of clay and silicate rocks, and are dark in appearance.
What causes gravity?
Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.
How small can a spiral galaxy be?
Dwarf galaxies are characterized as having low luminosities, small diameters (less than 5 kpc), low surface brightnesses, and low hydrogen masses.
What causes gas giants?
Gas giants could get their start in the gas-rich debris disk that surrounds a young star.
Which is the smallest planet in our solar system?
Earth is the smallest planet in our solar system.
Where are Asteroids Located?
in the main asteroid belt – a region between the orbits of Mars and Jupiter.
Why isn't there gravity in space?
Because gravity is everywhere in space, objects in space are always falling: towards the earth, towards the sun, and towards the galactic center
Which hemisphere has the best view of the Milky Way?
southern hemisphere
Can a gas giant be ignited?
Jupiter itself is incapable of ever 'igniting'.
How many planets are there in the Solar System?
There are eight planets in our Solar System.
What is the Main Asteroid Belt?
the asteroid belt between Mars and Jupiter
How fast do you have to go to escape the atmosphere?
A spacecraft leaving the surface of Earth, for example, needs to be going about 11 kilometers (7 miles) per second.
How can we know that there are other galaxies if we cannot leave ours?
Although we cannot visit the other galaxies we can see that they are there through telescopes
Can a gas giant have water?
Water vapor is common in gas giants;
Why is it called the Solar System?
because our Sun is named Sol, after the Latin word for Sun, "solis," and anything related to the Sun we call "solar."
Are Asteroids Dangerous?
large rocks can hit and cause damage
Can gravity form waves?
gravity can make gravitational waves.
Is the Milky Way a collision of two galaxies?
The Milky Way is not the result of the collision of two large galaxies.
Can a gas giant be cold?
A cold hydrogen-rich gas giant more massive than Jupiter but less than about 500 M Earth (1.6 M J) will only be slightly larger in volume than Jupiter.
Can a star turn into a planet?
Yes, a star can turn into a planet, but this transformation only happens for a very particular type of star known as a brown dwarf.
Will Asteroids hit Earth Again?
Yes, asteroids have hit Earth over the course of its history, and it will happen again.
Can we create gravity?
by using centrifugal force we can generate something equivalent to gravity on Earth
Where does the name "Milky Way" come from?
The Milky Way gets its name from a Greek myth about the goddess Hera who sprayed milk across the sky
Can a gas giant explode?
a chemical that when it's in gas form on Earth, can be explosively combustible.