35
the-sun
× 8 |
10
electromagnetic-spectrum
|
6
nebula
× 3 |
3
universe
× 5 |
23
history
× 3 |
9
the-moon
× 7 |
6
ligo
× 2 |
3
core
× 2 |
17
planet
× 7 |
8
black-hole
× 8 |
6
gas-giants
|
3
pluto
× 2 |
15
gravity
× 9 |
8
galaxy
× 5 |
6
sunspots
|
3
solar-flare
|
15
chicxulub
× 2 |
7
milky-way
× 3 |
5
telescope
× 5 |
2
big-bang-theory
× 3 |
14
earth
× 7 |
7
light-pollution
× 2 |
5
solar-system
× 3 |
2
radio-astronomy
× 2 |
13
asteroids
× 9 |
7
metal
× 2 |
5
apparent-magnitude
× 3 |
2
lagrange-point
× 2 |
12
comets
× 6 |
7
kuiper-belt
|
4
amateur-observing
× 2 |
2
mars
|
12
9th-planet
× 2 |
6
astrophysics
× 6 |
4
formation
× 2 |
2
space-debris
|
11
orbit
× 3 |
6
gravitational-waves
× 4 |
4
astrobiology
|
2
spectral-type
|
11
naked-eye
|
6
quasars
× 3 |
4
life
|
2
naming
|
10
star
× 10 |
6
space-telescope
× 3 |
4
mercury
|
2
sound
|
10
wavelength
× 2 |
6
impact
× 3 |
4
collision
|
2
star-gazing
|
aliential
