This glossary covers words that you will come across on this website.
a |
b |
c |
d |
e | f |
g |
h |
i | j | k |
l |
m | n | o |
p | q |
r |
s |
t | u | v |
w | x | y | z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
Click one of the letters above to be taken to a page of all terms beginning with that letter.
- Lenticular galaxy
-
This type of galaxy has a disk and a bulge, similiar to spiral galaxies, but with no obvious spiral arms. In Hubble's classification system they are identified as S0 galaxies.
Synonyms: Lenticular, lenticulars
- Luminosity
-
The amount of energy a body radiates per unit time.