Earth And Space Flashcards
Galaxies
A huge collection of gas, dust and billions of stars and their solar systems
Solar system
the gravitationally bound system of the Sun and the objects that orbit it
Astronomer
someone who studies a specific field of space
Expanding universe
The constant expansion of the universe due to the Big Bang
Singularity
A zone that is very small, very dense and very hot
Gravity
A force that pulls particals together
Asteroid
An asteroid is a minor planet of the inner Solar System
Cosmology
The study of the universe
Star
massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources
Celestial body
A natural object which is located outside of Earth’s atmosphere
Moon
an object that orbits a planet or something else that is not a star.
Comet
cosmic snowballs of frozen gases, rock, and dust that orbit the Sun.
