Space Exploration and Cosmology Flashcards
1
Q
Asteroid
A
Big Rock - doesn’t have enough gravity to become a planet
2
Q
Comet
A
Large mass of ice body passing through the solar system
3
Q
Moon
A
A body in a planets orbit
4
Q
Galaxy
A
A gravitational bound collection of stars e.g. Andromeda
5
Q
Universe
A
Everything that exists including dark energy and dark matter
6
Q
Universe
A
Everything that exists including dark matter and dark energy
7
Q
Meteor
A
Small fragment of an asteroid
8
Q
Exoplanet
A
A planet outside our solar system
9
Q
Dwarf planet
A
Almost the same mass as a planet but not considered a true planet
10
Q
One light year
A
9.46 x 10 ^ 15
11
Q
The habitable (or Goldilocks) zone
A
Where a planet is the distance from a star that is just right
12
Q
How old is the universe
A
13.7 billion years old
13
Q
Weight
A
Newtons
14
Q
Mass
A
Kilograms
15
Q
Gravitational field strength
A
Newtons per kilogram
