| 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 | ||||
| Description | alt | broader | narrower | related |
|---|---|---|---|---|
| YAGI ANTENNAS (YagiAntennas) | ||||
|
ANTENNAS
, DIRECTIONAL ANTENNAS , RADIO TELESCOPES |
HALF WAVE DIPOLES | |||
| Y ARRAYS (YArrays) | ||||
|
ARRAYS
, RADIO INTERFEROMETERS |
T ARRAYS | |||
| YEAR (Year) | ||||
|
ANOMALISTIC YEAR
, COSMIC YEAR , TROPICAL YEAR |
EPHEMERIS TIME
, LIGHT YEAR , SIDEREAL TIME , TIME , UNIVERSAL TIME |
|||
| 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 | ||||
| Description | alt | broader | narrower | related |
| YOKE MOUNTING (YokeMounting) | ||||
| EQUATORIAL MOUNTING | ||||
| YOUNG DISK CEPHEIDS (YoungDiskCepheids) | ||||
| CEPHEIDS | ||||
| YOUNG STAR CLUSTERS (YoungStarClusters) | ||||
| OPEN STAR CLUSTERS |
OB STARS
, POPULATION I STARS , T ASSOCIATIONS , YOUNG STARS |
|||
| YOUNG STARS (YoungStars) | ||||
| POPULATION I STARS |
B STARS
, BLUE STRAGGLER STARS , O STARS , OB STARS , PREMAINSEQUENCE STARS |
H II REGIONS
, OB ASSOCIATIONS , R ASSOCIATIONS , T ASSOCIATIONS , YOUNG STAR CLUSTERS |
||
| Only the broad classes are shown below. Specific types will be found under these, or from the Hierarchical List. | ||||