Unit 6 Milky Way Vocab

Front

Dense star clusters in our halo

Back

Globular Cluster

Front

Galactic bodies & rays collide, forming isotopes of stable beryllium, boron, etc. Not found in star fusion.

Back

Cosmic Ray Spallation

Front

Gas giant, ~13 billion years old, orbits a pulsar, 12,390 light years away.

Back

PSR B1620-26 b

Front

Younger blue stars in a galaxy's disk, especially spiral arms, rich in heavy metals.

Back

Population I stars

Front

Old, metal-poor stars in halo and bulge, long-lived.

Back

Population II stars

Front

ESA's 3D map of the Milky Way includes 1.7 billion stars!

Back

GAIA Mapping

Front

Apparent movement of celestial objects based on position

Back

parallax

Front

Distance light travels in a year

Back

light year

Front

Unit of distance = 3.26 light years

Back

parsec

Front

Planets outside our solar system

Back

Exoplanets