science cross word

who created the principles of modern physics
What happens to a star when it dies
A burning ball of gas
What particle is the primary carrier of electricity found in solids?
What is the general name for the gasses surrounding the earth or other planets?
All existing matter and space, 10 billion light years in diameter.
The science of the origin and development of the universe.
National Aeronautics and space administration
What is Proxima Centauri?
Travel through time into the past or the futre
A variable star having a regular cycle of brightness
A star that increases in brightness because of an explosion
The planet seventh in order from the sun
an air-like substance which expands freely into space available
Being able to see
the force that attracts a body towards the centre of the earth
a system of millions of billions of stars
A small rocky body orbiting the sun
a celestial body moving in an elliptical orbit around a star