6
gravity
× 3 |
2
gravitational-waves
× 2 |
1
radio-astronomy
|
0
general-relativity
|
5
amateur-observing
× 3 |
2
hubble-telescope
|
1
radio-telescope
|
0
special-relativity
|
5
telescope
× 3 |
2
nebula
|
1
comets
|
0
cosmological-horizon
|
4
meteor
× 3 |
2
speed
|
1
history
|
0
messier-catalog
|
4
the-moon
× 3 |
2
astrophysics
|
1
size
|
0
space-travel
|
3
light
× 2 |
2
telescope-lens
|
1
meteorite
|
0
solar-eclipse
|
3
software
|
2
naked-eye
|
1
near-earth-object
|
0
black-hole
|
3
alignment
|
1
planetary-ring
× 2 |
1
gravitational-lensing
|
0
ascension
|
3
jupiter
|
1
cosmology
× 2 |
1
distances
|
0
roche-limit
|
3
rotation
|
1
the-sun
× 2 |
1
magnetic-field
|
0
dark-energy
|
3
photography
|
1
earth
× 2 |
1
supernova
|
|
2
star
× 3 |
1
space
|
0
time-dilation
|
|
2
observational-astronomy
× 2 |
1
universe
|
0
space-time
|
Tanenthor
