Astonomy Flashcards
A nuclear reaction.
Nuclear fusion
Protoplanets are moon-sized or larger planetary embryos.
protoplanetary
Gas and dust that have orbited the Sun during the formation of the planets.
or
A small planet.
Planetesimal
A group of stars that make a pattern.
Or
A group of stars.
constellation
Light or darkcloud.
nebula
A parsec Can be 3.26 a light year.
Parsc
Distance of light that travels in one year
Light Year
Is the distance between the sun and earth.
Astronmical unit
A planet having a compact rocky surface like the Earth’s
Terrestrail planets
A large, massive, low-density planet composed primarily of hydrogen, helium, methane, and ammonia in either gaseous or liquid state.
Gas Giant
A celestial object that orbits the Sun along an elongated path.
Coment
Any of numerous small, often irregularly shaped rocky bodies that orbit the Sun primarily in the asteroid belt , a region between the orbits of Mars and Jupiter.
Asteroid
The scientific study of the origin, evolution, and structure of the universe.
Cosmologist
What do they call a angle orbit.
angular
The speed and direction of motion of a moving body.
Velocity
The path followed by a celestial body or artificial satellite as it revolves around another body due to the force of gravity.
Orbit
