Spin articles
How do astronomers measure the speed of stars within a galaxy?
What is the term for the plot correlating orbital velocity against distance from the galactic center?
What observation contradicts the expected behavior based only on visible matter in spiral galaxies?
What is the primary driver of rotational velocity differences observed between spiral galaxies?
Approximately how long does it take the Milky Way to complete one full rotation?
How much faster than the Milky Way do the most massive galaxies spin?
What is the defining feature of galaxies known as 'super-spirals'?
What component provides the necessary gravitational anchor for fast-moving outer stars in rapidly spinning galaxies?
If visible matter alone held the galaxy together, what would happen to super-spirals?
How must the density of the dark matter halo change moving outward to produce a flat rotation curve?
What fundamental consistency has been found regarding the intrinsic spin of the vast majority of spiral galaxies?
What gases primarily constitute a diffuse nebula prior to stellar birth?
What external trigger can initiate the collapse of a stable nebula?
What physical law dictates the increasing spin rate during cloud shrinkage?
Which force acts outward, perpendicular to the rotational axis, causing cloud flattening?
What is the fundamental name for the flattened structure orbiting the protostar?
What theory explains the formation of stars and planetary systems from nebulae?
How does the protostar core generate intense heat before achieving stellar status?
What defines the boundary where volatiles condense into solid ice grains in the disk?
What kind of planets typically form close to the hot protostar core?