Exploring Space Crossword

This Rocky planet is named for the Roman messenger to the gods.
A region of space having a gravitational field so intense that no matter of radiation can escape.
This telescope was launched into orbit by space shuttle discovery on April 24 1990.
This planet was visited 4 times by space craft and has 62 moons.
In the next 20-40 million years this planet will have a ring around it which will last 100 million years.
The closest star to our planet.
This dwarf planet was once designated to the ninth planet to the sun.
This 'ice giant' was officially discovered in the year 1781.
In our solar system the only things brighter then this planet are the Sun, Moon, and Venus
This planet is the hottest planet in our solar system.
A theory starting 12 billion years ago on how everything was brought to be.
The only planet in our solar system not named after a god.
A bar-shaped structure composed of over 400 billion stars containing our solar system.
This planet was discovered by Jean Le Verrier.
The star around which the Earth orbits