is the science that studies the composition, position, and movements of all objects in space.
a pattern of stars arranged as a mythical figure or animal
a constellation always in our night sky because the North Pole Points towards it.
suggested the sun is the center of our solar system
the spinning of an object around an imaginary axis.
the number of hours of daylight
constructed accurate telescopes and discovered moons and rings around planets.
earth is farthest away from the sun
created laws of planetary motion
earth is closest to the sun (Jan 3)
the change in direction of the Earth's axis
when the sun is above and below the horizon an equal amount of time
the outer atmosphere of the sun that is visible during a complete solar eclipse
the view that the earth is the center of the universe
the type of eclipse that occurs when it is sun, moon, earth
very strong tides (very high and very low) when the sun, earth and moon are lined up
when the sun is at the highest and lowest positions in the sky
the motion of an object around another object (a year)
the apparent slowing, reversal and looping of a planet in its path across the sky
Eclipse when it is sun, earth, moon
the view that the sun is the center of the solar system
Caused by the tilt of the earth's axis
weak tides, when the sun and moon are perpendicular to each other with respect to the earth.
one of the four planets furthest from the sun, another name for the gas giants
most of this type of planet is made up of gas.
one of the planets closest to the sun, another name for the terrestrial planets
one of the dense rocky planets nearest to the sun, another name for the inner planets
small chunks of rock and metal that orbit the sun that are between the orbits of Mars and Jupiter
large meteors that reach the earth's surface
a chunk of rock that goes through the earth's atmosphere creating a streak of light, but doesn't hit the ground.
frozen chunks of rocks and metalllic particles that orbit the sun in long elliptical paths
a shift of the spectral lines to longer wavelengths. Used to find if galaxies are moving away or towards us.
an instrument that splits and spreads out light into a spectrum.
the distance light travels in one year
a method of determining the distance to objects by using two angles and a baseline
The energy producing reaction that occurs in the sun.
Amount of light a star actually gives off, recorded at a standard distance
How bright a star appears to us on earth
He stated that the earth is the centre of the universe
dark spots on the Sun's surface caused by disturbances in the Sun's magnetic field.
huge bursts of gas from the sun that can last several weeks
brief expulsion of large quantities of gas from the sun that orginate from sunspots
a high energy star-like object that emits radio waves
a large, round, densely-packed grouping of thousands to millions of older stars
a loose, disorganized grouping of stars that contains no more than a few hundred, typically young, stars.
an optical telescope consisting of a large concave mirror, invented by Isaac Newton
an optical telescope that has a large convex lens, perfected by galileo
a collection of dust and gases, consisting mainly of hydrogen and helium
A star that expands and cools once it runs out of hydrogen fuel
a dim star that forms from a collapsed red giant
the brilliant explosion of a dying supergiant star
the end stage of a high mass star life cycle . It is a star that emits light and a beam of very high energy radio waves
Remnant of a very high mass star that is so dense that nothing, not even light, can escape its gravity field.
a huge collection of stars, dust, and gas bound together by gravity