Astrophysics and cosmology

The following units of length are often used to measure large distances (for example, in astronomy and astronautics): the astronomical unit, the light year and the parsec.

V.M.Yurovitsky, Moscow Humanity's entry into space compels a fresh interpretation of many mechanical concepts.

One of the mysterious events in the “life” of our planet is the fall of the Tunguska meteorite, which took place in the early morning of 30 June 1908 in the area of the Podkamennaya Tunguska River, in Eastern Siberia.

Each of us has seen such a beautiful natural phenomenon as the rainbow.

One of the interesting optical phenomena is the halo.

Auroras, also known as the northern and southern polar lights, are a natural light in the sky, and are usually observed at night.

This spring the famous Large Hadron Collider will begin its research again.

in astronomy, a change in the apparent position of a celestial body on the celestial sphere, caused by the finite speed of light and by the motion of the observer owing to the rotation of the Earth ( diurnal aberration o…

White dwarfs , compact stars with masses of the order of the mass of the Sun M ο and radii ≈1% of the radius of the Sun R ο ; they make up 3—10% of the total number of stars in the Galaxy.

Dynamo effect (hydromagnetic dynamo), the self-excitation of magnetic fields by the motion of a conducting liquid or a gaseous plasma.

Nuclear astrophysics covers the study of all the nuclear processes that take place in stars and in other cosmic objects.

(Jy), a non-SI unit of the spectral flux density of radiation, used in radio astronomy.

At present researchers have detected more than four hundred planets going round other stars, but modern technology does not yet make it possible to study the surface of a planet and the processes going on there.