The FIRE simulations combine astrophysical theory and advanced algorithms to model galaxy formation. The models enable researchers to probe how galaxies form, grow and change shape, while accounting for energy, mass, momentum, and chemical elements returned from stars. When Sun, Faucher-Giguère, and...
How can this be if energy is conserved? If we are not running out of energy, what are we really running out of? An inefficient machine is said to 'waste energy'. Does that mean energy is actually lost? Explain. Some of the energy we produce is wasted, for example, heat from a ...
The model can also show how dark energy is not an increase in energy that is causing the accelerated expansion of the universe, but is an accelerating decrease in matter throughout the universe as the stars and galaxies in the universe continue to convert matter into energy during their life ...
“Basically, the star would be too massive for the jet to pierce through,” Gottlieb said. “So the jet will never make it out of the star, and that’s why it fails to produce a GRB. However, in these stars, the dying jet transfers all its energy to the cocoon, which is the onl...
produced, since creating them robs the star of energy rather than giving energy back. It has long been thought that these heavier elements, such as silver and gold, are created when two dense neutron stars collide. The gold of your wedding ring formed in the merging of two st...
—'Immortal' stars at the Milky Way's center may have found an endless energy source, study suggests —Supermassive black hole roars to life before astronomers' eyes in world-1st observations —Black hole growth is slowing down in the universe. New research could help explain why. There ...
Life in the clouds of Venus, if present in sufficiently high abundance, must be affecting the atmospheric chemistry. It has been proposed that abundant Venusian life could obtain energy from its environment using three possible sulfur energy-metabolisms.
Explain how supernovae produce neutron stars and pulsars. Name the most recent modification of the standard Big Bang model, and briefly explain how it differs from the standard model. Why do you think it took so long for astronomers to accurately measure the ...
It takes some effort to see the depth in what at first seems to be a random dot pattern. Not everyone can do that on the first try. There are lots of resources online which teach how to do that. The good thing is it's like riding a bicycle: once you got it right for the first...
“For the new model (2HDM) to match what we already know from CERN, for example, the parameters in the model can’t be just anything. On the other hand, to be able to produce enough baryon asymmetry, the parameters also have to be within a certain range. So that’s why we’re tr...