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58 Cards in this Set

  • Front
  • Back

Heliocentric

When the sun is the center of solar system

Geocentric

When the earth is at the center of our solar system

Spectroscopy

Science of Colour

Bright Line Spectrum

Gas is heated at low pressure, which goes through a prism and produces few colours and thick black lines(spectral)

Continously Spectrum

Gas heated at a high presses or solid/liquid heated (no spectral lines, blended colours)

Absorption or Dark Line

Gas heated at high pressure or heated solid/liquid(thin spectral lines)

Interferometry

When you connect 2 radio telescopes to a computer to improve image quality

Diffraction Grating

Device made of thousands of closely spaced slits, used to learn wavelengths or colour contained in a beam of light

Spectrums

Emission, Continous, Absorption

Triangulation

Way of indirectly measuring

Red Shift

Object moves away from you

Earth Rotation Period

24 hours

Resolving Power

Depends on objective lens

Triangulation Measuring

Needs a baseline and 2 angles

Longest wavelengths

Come from Radio Telescope

Nebula

Made of dust and gas

Furthest AU measurement on Earth

2 AU

Azimuth

Which compass direction it can be found in the sky

Zenith

Directly up

Order of planets (Heliocentric)

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Hottest Planet

Venus, atmosphere acts as a cage/greenhouse gas effect

Saturn

Prominent rings, second largest

Uranus

Not visible by naked eye, orbits on its side, thing rings

Neptune

Further from the sun, not visible by naked eye, thin rings

Mercury

Smallest, closest to sun, most cratered, no moons

Venus

Hottest Planet, thick atmosphere, close to earth's size, 2nd brightest object in the night sky

Mars

"Red planet" due to iron oxide, 2nd smallest, signs of liquid water, polar ice caps

Jupiter

Largest, thin rings, heaviest planet

Terrestrial Planets

Inner planets, mercury, Venus, Earth, Mars

Gas Giants

Outer Planets, Jupiter, Saturn, Uranus, Neptune

Doppler Effect

Increase or decrease of sound ( closer more high pitched. )

Galaxy

Billions of stars combiner with gas and dust which is all held by gravitational attraction

Reflecting Telescope

When a mirror is used to collect and focus light

Retracting Telescope

Uses a lens as its objective to form an image . Also referred to as a dioptric telescope.

Lightyear

Distance of what light can travel in a year

Altitude

Height

Combination Telescope

Makes distant objects appear larger and brighter by using a combination of lenses (refracting telescope) or lenses and curved mirrors (reflecting telescope

Adaptive Optics

Technology used to improve the performance of optical systems by reducing the effect of wavefront distortions: it aims at correcting the deformations of an incoming wavefront by deforming a mirror in order to compensate for the distortion.

Space Telescopes

Telescope operated in space, allows it to avoid light pollution

Electromagnetic Spectrum

Range of wavelengths or frequencies over which electromagnetic radiation extends.


Sun

Made of hydrogen ( mostly )and helium

Risks of Living In Space

Oxygen, pressure, temperature, fuel, water storage, food, muscle loss

Natural Satellite vs Artificial Satellite

Any celestial body that orbits around another body are natural (Ex. Moon) vs Man made rockets are artificial

Probe

A spacecraft designed to transmit information about its environment

Shuttle

Reusable spacecraft that is designed to launch satellites and transport people or materials between earth and a space station

Satellite

Can be natural or artificial. Any celestial body that orbits another planet or man made object

Solar Eclipse

Moon completely covers the suns disk. When moon passes between the sun and the earth, and the moon fully or partially blocks the sun.

Lunar Eclipse

When moon passes directly behind the earth. When the sun, Earth and moon are alinged, exactly, or very close, with the earth in the middle.

Communication Satellites

Are artificial and provide signals and recieve signals from Earth to the satellite in space

Geosynchronous Orbit

Earth satellite that matches the rotation of earth. Approximately 23 h and 56 m and 4 s

Low Earth Orbit

When earth is orbiting with an altitude between 160 km

Observation Satellite

Designed for Earth observation, used for environmental monitoring, meteorology, map making etc

Remote Sensing

Scanning of earth by satellite

Global Positioning System (GPS)

System of satellite, computers and receivers that are able to determine latitude and longitude of a receiver on Earth by calculating time difference for signals from different satellites to reach the receiver

Rocket: Payload

Can be a satellite, sauce probe or spacecraft carrying, humans, animals, or cargo

Rocket : Exhaust Velocity

Exhaust has leaves the ozzie of the rockets engine

Rocket : Staged Rocket

A multistage rocket is a rocket that uses 2 + stages, each one contains it's own engine and propellant

Rocket : Gravitational Assist


A movement ( maneuver or swing ) which gravity of a planet or another astronomical object to alter the path and speed of a spacecraft