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Answers in fundamental physics

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Home→Categories Cosmic objects

Category Archives: Cosmic objects

Cosmic objects and phenomena: exploration, explanation and usage

How come bright stars get smaller magnitudes?

Posted on September 26, 2020 by admin
Magnitude is an astronomical characteristic of a star's brightness

  It started with the fact that the ancient Greek scientist Hipparchus compiled a star catalog in the century II BC. He subdivided the stars into classes according to their brightness. Then, after three centuries, Ptolemy in his scientific treatise … Continue reading →

How were the primordial atoms formed?

Posted on September 1, 2014 by admin
The electron is captured into orbit by a proton

How electrons began to remain in orbits In the early hot universe, free electrons were being captured by protons, forming hydrogen atoms. The photons, emitted in this process called recombination, took away the difference between the summary mass of free … Continue reading →

How to distinguish between distant and close galaxies?

Posted on September 1, 2014 by admin
Distant galaxies look larger

Increasing the visible size keeping the same amount of light emitted When we look at a distant source of light that spreads in all directions, we see only a portion of the photons emitted by it. As the distance from … Continue reading →

What keeps the stars from the gravitational collapse?

Posted on August 31, 2014 by admin
The evolution of a star is determined by its weight

About how the pressure of the Fermi gas restrains from compression There are the reactions of nuclear fusion in the core of a star — of the formation of more heavy atomic nuclei, which is accompanied by the release of … Continue reading →

Why do supernovae result in the flux of neutrinos?

Posted on August 31, 2014 by admin
Neutrinos from the supernova

Conversion of the protons of star into neutrons with the emission of neutrinos So-called supernova explosion occurs as a result of gravitational collapse of a star, completing its life cycle, if its weight exceeds a few solar masses (the Chandrasekhar … Continue reading →

Why there is not much antimatter in the universe?

Posted on August 31, 2014 by admin
Antimatter in the universe is not ruled out

On searches for antimatter in space… The observed domination of protons, neutrons and electrons over their antiparticles means that our universe has got the so called baryon quantum number. This is composed of baryon numbers of each of nucleons. It … Continue reading →

How to register particles of dark matter?

Posted on August 31, 2014 by admin
Dark matter detector is protected from the cosmic background

Passage of dark matter particles through substances without interacting… The dark matter makes up more than 80% of the matter of the universe. This does not almost radiate electromagnetic waves and manifests itself basically by its gravitational interaction. It may … Continue reading →

How have antiparticles disappeared in the universe?

Posted on August 31, 2014 by admin
Annihilation under the baryon asymmetry

How the decay of particles overtook that of antiparticles… It is observed that the number of baryons in the universe (protons and neutrons) exceeds the number of antibaryons at least ten thousand times. Such an asymmetry could arise in the … Continue reading →

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Categories

  • Cosmic objects
  • Discoveries and motivation
  • Experiments and observation in physics, their purpose and how to implement
  • Fields of fundamental physics, their relation to each other and use
  • Mathematics for physics
  • Methods of fundamental physics, people and computers
  • Miscellaneous
  • Misconceptions in fundamental physics, unexpected turns and cyclical development
  • The leading edge of fundamental physics and its border with fiction
  • The past and present of the universe as a whole, observations and laws of change
  • The properties and interactions of elementary particles, theory and experiment
  • The properties of space-time, its changes and features
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