Astronomers and stars Flashcards
Ptolemy
Believed the Earth was the center of the universe.
Copernicus
Believed the sun was the center of the universe.
Tycho, Brahe
He made the most detailed astronomical observations that have been recorded so far.
Johannes Kepler
He was Tycho’s assistant until Tycho died, then took over Tycho’s work.
Galileo
One of the first use a telescope to observe objects in space.
Ursa Minor
Also, know as the little bear, 7 of its stars form the little dipper.
Ursa Major
Also, know as the Great Bear, 7 of its stars form the big dipper.
Orion
Alnilam, Mintaka, and Alnitak form Orion’s belt. Orion is the godfather of hunting.
Canis Major
Consists of Sirius, the brightest star in the sky and the fifth nearest to Earth, at a distance of 8.6 light-years.
Red giant
A red giant star is a dying star in the last stages 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
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.
Blackhole
A black hole is a region of spacetime where gravity is so strong that nothing can escape from it
Parallax
A displacement or difference in the apparent position of an object viewed along two different lines of sight.
