Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
GALAXIES |
collection of dust, gases and billions of stars |
|
LIGHT YEARS: |
the distance light travels in one year |
|
PROXIMA CENTAURI |
closest star to our solar system- approximately 4.22 light-years away from our solar system |
|
SPIRAL GALAXY |
disk shape;with arms and bulge in center- arms rotate(spin) |
|
MILKY WAY |
our galaxy; our solar system & Sun is found on the arm |
|
ELLIPTICAL GALAXY |
flat, oval shape; contains old stars |
|
IRREGULAR GALAXY |
no shape; contains young stars- least common kind |
|
SUN |
yellow medium size star much brighter than other stars because it is closer to Earth |
|
GRAVITATIONAL PULL |
of the sun keeps our planets in orbit around it at the center of solar system |