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20 Cards in this Set
- Front
- Back
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Solstice
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when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days.
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equinox
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the time or date twice each year at which the sun crosses the celestial equator, when day and night are of equal length
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maria
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Flat regions on the moons surface caused by lava flow on the moon.
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Ellipse
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A flattened circle or oval.
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Project Mercury
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Project Mercury was the first human spaceflight program of the United States.
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Project Gemini
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Project Gemini was the second human spaceflight program of NASA, the civilian space agency of the United States government.
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waxing(moon)
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A lunar phase or phase of the moon
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refracting telescope
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A refracting or refractor telescope is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope).
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reflecting telescope
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A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light and form an image.
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observatory
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An observatory is a location used for observing terrestrial and/or celestial events.
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radio telescope
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A radio telescope is a form of directional radio antenna used in radio astronomy
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satellite
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A satellite is an object which has been placed into orbit by human
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moon phase
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Animation of the Moon as it cycles
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Project Apollo
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The Apollo program was the United States spaceflight effort which landed the first humans on Earth's Moon.
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Solar Eclipse
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When the moon is blocking the light of the sun from the earth Ex.) Earth, moon, then sun
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lunar eclipse
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Occurs when Earths shadow falls on the moon Ex.) Sun,Earth, then moon
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space station
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a large artificial satellite used as a long-term base for manned operations in space.
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space shuttle
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a rocket-launched spacecraft, able to land like an unpowered aircraft, used to make repeated journeys between the earth and earth orbit
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space probe
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an unmanned exploratory spacecraft designed to transmit information about its environment
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orbit
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the curved path of a celestial object or spacecraft around a star, planet, or moon, esp. a periodic elliptical revolution.
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