astrology Flashcards
ptolemy
he told us that the sun was revolving
copernicus
the universe revolves around the sun
Brahe
he had very precise measurements of the planets and stars
kepler
he took brahe’s work but said the planets revolved around the sun
galileo
he was the first person to use a telescope
newton
he is famous for his laws of gravity
hubble
he said there were other galaxies beyond our own
ursa major
Ursa Major is a constellation in the northern sky
ursa minor
Ursa Minor, also known as the Little Bear, is a constellation in the Northern Sky
orion
Orion is a prominent constellation located on the celestial equator and visible throughout the world
canis major
Canis Major is a constellation in the southern celestial hemisphere
cassiopeia
Cassiopeia is a constellation in the northern sky
red giant
A red giant is a luminous giant star of low or intermediate mass in a late phase of stellar evolution
white dwarf
A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel
main sequence star
In astronomy, the main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness
supernova
A supernova is a powerful and luminous stellar explosion
black hole
A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it.
parallax
Parallax is a displacement or difference in the apparent position of an object
light year
The light-year, alternatively spelled lightyear, is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers or 5.88 trillion miles
polaris
Polaris is a star in the northern circumpolar constellation of Ursa Minor
