Astronomy

Planetary Astronomy

Solar System Mechanics

8A10.10 Orrery

To model the inner solar system.

8A10.11 Center of Mass Between Two Objects

To model many astronomical systems in which two bodies orbit about their center of mass.

8A10.15 Scale Model of the Solar System

To model the relative sizes of and distances between the planets in the solar system.

8A10.32 Earth, Moon, and Sun Models

To model the interactions between the earth, moon and sun.

Earth - Moon Mechanics

8A10.50 Precession of the Equinoxes

To model the precession of the Earth’s equinoxes.

8A20.07 Seasonal Tilt

To show how the tilt of earth creates the seasons.

8A20.15 Phases of the Moon

To show the reason for the phases of the moon.

8A20.37 Umbra and Penumbra

To model the two components of the shadow the moon casts on the earth during a solar eclipse.

Views from Earth

Planetary Characteristics

8A30.30 Retrograde Motion

To explain the retrograde motion of Mars.

8A30.70 Parallax

To demonstrate how parallax can be used to measure the distance from an observer to a star.

8A35.10 Celestial Sphere

To show the daily movement of the stars.

8A70.21 Rayleigh Scattering

To model the scattering of the sun’s rays in the Earth’s atmosphere which makes the sky blue.

8A70.39 Thermal Radiation

To model the sun heating the Earth via radiation.

8A70.40 The Greenhouse Effect

To model the earth’s atmosphere trapping thermal radiation from the sun.

8A70.52 Hoberman Sphere

To discuss the angular momentum of rotating planets.

8A70.55 Differential Rotation

To model the differential rotation which occurs in gaseous planets, solar systems and galaxies.

Comets and the Search for Life

8A70.90 Cratering

To model the formation of craters.

8A80.92 Miller-Urey Experiment Prop

To show a prop similar to the apparatus used in the Miller-Urey experiment.

Stellar Astronomy

The Sun

Stellar Spectra

Stellar Evolution

8B10.30 Sunspot

To show that a sunspot appears dark because it radiates less than the surrounding area.

8B10.40 Convection Cells

To model the convection cells which form on the surface of the sun.

8B20.50 Exoplanet

To model a technique for identifying exoplanets.

8B30.35 Binary Star

To show the variation in brightness as a binary star rotates.

8B30.47 Crush the Can

To model a supernova in which a star collapses due to pressure.

8B30.70 Pulsar

To model the light emitted by a pulsar.

8B30.71 Msec Pulsar

To explain why a pulsar does not appear to flash when observed through a telescope.

8B30.75 Pauli Exclusion and Electron Degeneracy Pressure

To model the force which prevents gravity from collapsing small stars.

Stellar Miscellaneous

8B50.45 Hydrostatic Equilibrium

To model the balance between the force of gravity and the radiation pressure in stars.

Cosmology

Models of the Universe

Gravitational Effects

8C10.10 Expanding Universe

To model the universe expanding uniformly in all directions.

8C10.15 Dark Matter and the Big Bang

To model how the presence of dark matter at the time of the big bang allowed for the formation of galaxies.

8C10.20 Wilkinson Microwave Anisotropy Probe

To discuss slight deviations in temperature in the universe.

8C20.00 Curved Space Bucket

To model the curvature of space surrounding objects with large mass.

8C20.35 Non-Euclidean Geometry

To model the distortion of straight lines by positively curved space.

8C20.38 Leon's Triangles

To show that the sum of the angles of a triangle is 180 degrees in Cartesian space but not in curved space.

8C20.40 Gravitational Lens

To simulate the bending of light due to gravity.

8C20.70 Magnetic Domains

To model the formation of cosmic strings due to topological defects in the early universe.

8C20.90 Hawking Radiation

To model a black hole increasing in temperature as it radiates.