red articles - Page: 2
What initial mass generally qualifies a star to evolve into a red supergiant capable of supernova?
What element's formation signals the cosmic dead end for nuclear fusion in the core of a massive star?
What is the primary consequence when a star's core converts to iron regarding energy production?
How fast can the iron core collapse inward during the catastrophic implosion?
What is the approximate final size of the collapsed iron core just before it rebounds to cause a supernova?
What process forms neutrons during the extreme compression of the collapsing core?
What phenomenon supports a neutron star against further gravitational collapse?
Which famous star is provided as an example of a red supergiant?
Under what condition does the remnant of a supernova definitively become a black hole?
What is the primary role of a red supergiant supernova regarding cosmic element distribution?
If placed where the Sun resides, how far might the outer atmosphere of a red supergiant extend?
What two fundamental forces maintain equilibrium during a star's main sequence phase?
What event signals the definitive end of a star's main sequence reign?
When core hydrogen fusion ceases, which force immediately takes control?
What process ignites in the layers surrounding the contracting inert helium core?
What physical change causes a star transitioning into a red giant to appear distinctly red?
Compared to its main sequence phase, how does the luminosity of a red giant generally compare?
Approximately how long does a star similar to the Sun spend on the main sequence?
What is the approximate upper mass limit distinguishing low-mass stars from high-mass stars post-MS?
What is the rapid ignition event called when a solar-mass star begins fusing helium in its core?
When plotted on an H-R diagram, how does a star move when transitioning from the main sequence to a red giant?
What fundamental observation about light from distant galaxies is a core piece of evidence in modern cosmology?
What is the relationship between light wavelength and perceived color?
What phenomenon is caused if an object emitting light is moving toward an observer?
What are the two fundamentally different ways light can become redshifted when observed from Earth?
What term describes the actual movement of a galaxy relative to its neighbors, often caused by local gravitational interactions?
What causes cosmological redshift, the primary factor for the most distant objects?
According to Hubble’s Law, what is the systematic relationship between the distance of distant galaxies and their observed redshift?
Why does light from a farther galaxy experience a greater accumulation of redshift than light from a nearer one?
What mechanism dominates the observed light shift for nearby galaxies like those in the Local Group?
What astronomical instrument spreads incoming light into a detailed spectrum to precisely measure the displacement of spectral lines?
If galaxies were moving within static space like shrapnel from an explosion centered on us, what key observational fact would be missing?
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