A space word that starts with a Y is year. The time it takes for a planet to make a complete orbit around the sun.
The correct yaw is very important if you wish to reenter Earth's atmosphere.
A
Alien
Apollo
Apocalypse
Asteroid Belt
Aurora
Axis
Atomic
Atom
Astrophysics
Atmosphere
B
Black Dwarf
Black Hole
Bolometer
Bright Star
Background Radiation
Balmer Lines
Barycenter
Baryon
Binary stars
C
Carbon dioxide
Cassiopeia
Celestial sphere
Circumpolar star
Chromosphere
Cloud
Clusters
Comet
Constellation
Core
D
Dark matter
Declination
Deconvolution
Density
Direct motion
Disk
Diurnal motion
Doppler effect
Double Star
Dust
E
Electromagnetic
Electromagnetic Spectrum
Electromagnetic Waves
Electron
Elements
Ellipse
Energy
Eons
Extragalactic
Extraterrestrial
F
Falling Star
Fireball
Flares
Flux
Flying Saucer
Frequency
Fusion
G
Galactic Halo
Galaxy
Gamma Ray
Gaseous
Gas Giants
Gas
Geocentric
Geophysics
Gibbous
Gravity
H
Helium
Hertzspurng-Russell diagram
Hertz
HI region
HII region
Horse-head nebula
Hubble
Hydrogen
I
Implosion
Inclination
Inferior planets
Infrared
Interstellar medium
Ionosphere
Ions
J
Jets
Jupiter
K
Kelvin
Kepler
Kilogram
Kinematic
Kirkwood gaps
L
Laser
Light curve
Light
Light years
Limb
Lo
Luminosity
Lunar
Lunar module
Lunation
M
Magnetic field
Magnetic pole
Magnetosphere
Magnitude
Micrometeorites
Milky Way
Miner planet
Mars
Matter
N
Nadir
Nebula
Neptune
Neutrino
Neutron
Neutron star
Newton's laws
Nova
Nuclear fusion
Nucleus
O
Observatory
Occultation
Opposition
Orbit
Orion
Oxygen
Ozone
P
Pluto
Particles
Parsec
Penumbra
Periastron
Perigee
Perihelion
Perturbations
Photosphere
Planetary nebula
Q
Quasar
Quasi-stellar object
Quasi-stellar source
R
Radiation
Radio galaxies
Rays
Red giant
Resolution
Resonance
Retrograde
Revolve
Ring
Rocket
S
Saturn
Saros cycle
Scintillation
Selenography
Seyfert galaxies
Shooting Star
Solar flares
Solar mass
Solar System
Stars
T
Telescope
Temperature
Terrestrial
Troposphere
u
UFO
Umbra
Universe
Uranus
Ursa Major
Ursa Minor
V
Variable stars
Venus
W
Wavelength
White Dwarfs
Wormhole
X
X-rays
Y
Yellow star
z
Zenith
Zodiac
Yellow Dwarf is the space word or the astronomical word that begins with the letter "Y". The Yellow Dwarf is just but an ordinary star like the sun that is a stable point in its evolution.
* Yed Prior - Delta Ophiuchi * Yed Posterior - Epsilon Ophiuchi * Yildun Delta - Ursae Minoris
Yang (In Chinese philosophy) active male principle of the universe.
galaxy, milky way
Ymir, a satellite of Saturn.
Year
Yellow dwarf
Ylem
Ymir is one of Saturn's moons.
· yellow dwarf
Stars
You can also distinguish them by the types of stars - older stars versus younger stars, and stars of different "metallicity".
galaxies
Vast collections of stars are called galaxies.
It depends on how much gravity that causes stars to form. It depends on how big the star in the galaxies is.
No stars are actually a galaxy. All stars are stars and all galaxies are galaxies. Stars are found in galaxies. Some galaxies look like tiny dots in our night sky, so might look like a star, but they are not stars; they are galaxies.
All stars and galaxies are in the universe.
Yes, there are stars between galaxies. When there are collisions or interactions between galaxies, stars can be ripped out of the galaxies. These stars will then wander into space between galaxies. Such stars have been observed with the Hubble Space Telescope. Taken from http://curious.astro.cornell.edu/question.php?number=384
Smaller galaxies do. Larger galaxies contain billions or even trillions of stars.
Galaxies are the massive collection of stars. Therefore galaxies could not have formed without stars.
Stars and Galaxies are related because a galaxy is a system of billions of stars, gases, and dust.
Stars
Bigger galaxies. And stars.
Galaxies ARE groups of stars. Lots of stars though. Not just like 2 or 3...
the stars are in the night skies
Galaxies are vast collections of stars. So I guess you could say that a big group of stars forms a galaxy. Our galaxy has many big clusters of stars within it, so not all star clusters are galaxies. If you have a cluster of several million or billion (or trillion) stars surrounded by a lot of empty space, that is probably a galaxy.
Because that is what galaxies are "made" up of.