First Semester Vocab Astronomy

Front

Parameters of Olber's Paradox:

Back

The universe must be Infinite, Static, and Timeless.

Front

Argument that the night sky's darkness contradicts an infinite, eternal universe.

Back

Olber's paradox

Front

Average density for halting Universe expansion after infinite time; a flat Universe has this density.

Back

critical density

Front

Extra term by Einstein in static universe equations.

Back

Cosmological constant

Front

Molecules made of antiprotons, antineutrons, and positrons.

Back

Antimatter

Front

Ozone-

Back

03 another form of oxygen that shields us from solar UV radiation.

Front

Differentiation

Back

separation of materials by density

Front

Sidereal day:

Back

day length measured with respect to the stars.

Front

Solar day

Back

Time for the Sun to reach its highest point one day to the next.

Front

Coriolis effect

Back

Deflection of ocean and air currents by a spinning planet.