Unit 9: Galaxies_M

Front

Galaxy

Back

A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.

Front

Neutron Star

Back

A star that has COLLAPSED under gravity to the point that the electrons and PROTONS have smashed together to FORM NEUTRONS

Front

Pulsar

Back

A highly MAGNETIZED, rotating neutron STAR or white dwarf, that EMITS a beam of electromagnetic RADIATION

Front

Black Hole

Back

A region of space having a gravitational field so intense that no matter or radiation can escape.

Front

Singularity

Back

A point in which matter is INFINITELY DENSE

Example- center of a black hole or the universe at the very beginning.

Front

Quasar

Back

A massive and extremely remote celestial object, emitting exceptionally large amounts of energy, and typically having a starlike image in a telescope. Suggested to contain massive black holes and may represent a stage in the evolution of some galaxies.

Front

Dark Matter

Back

Matter that does NOT give off electromagnetic radiation but is quite abundant in galaxies.

Front

Space

Back

The DIMENSIONS of height, depth, and width within which all things exist and move.

Front

Time

Back

The INFINITE series of points of existence and events in the past, present, and future.