The heliocentric system gained support when Galileo observed that Group of answer choices Venus goes through phases similar to those of Earth’s moon. the orbit of each planet is an ellipse. most of the smaller planets are closer to the sun. one side of the moon always faces Earth.

Analyze the central conflict and its in a story to discover the theme. o resolution o protagonist antagonist character

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt