Question

What is a Supernova? How are they formed? What is special about them.

Explain in 200+ words.

Regards,

The Blaze™

Answer 1

Hi friend,
Supernova is astronomical event taking place in a massive stars life which is very explosive. They are stated to be the most explosive activity taking place in space.force of the tremendous heat and pressure from the nuclear fires burning at the star's center tries to push all the material outward.
They often result in the formation of another star.

Hope it helps..plz mark as brainliest answer

Answer 2

A supernova (from the Latin nova, "new") is a stellar explosion that can manifest very noticeably, even at first glance, in places of the celestial sphere where previously nothing was detected in particular. For this reason, events of this nature were initially called  novae. Over time, a distinction was made between seemingly similar phenomena but with very different intrinsic luminosity; The less luminous continued to be called novae (novae), while the term supernova was coined by Walter Baade and Fritz Zwicky in 1931 to name the most luminous by adding the prefix "super-".

The most archaic term was used since antiquity to indicate the explosion of a white dwarf star in its outer layers, which produce a luminosity that can increase 100,000 times its original brightness. This luminosity lasts a few days and can sometimes be observed with the naked eye from Earth. Seeing a new glow in the sky, humans believed that a new star had appeared. The year after Fritz Zwicky's death, in August 1975, a nova appeared which could be observed with the naked eye from Earth for a few days. This nova came from the explosion of a red giant.

Supernovae produce intense flashes of light that can last from several weeks to several months. They are characterized by a rapid increase of the luminous intensity until reaching a greater absolute magnitude than the rest of the galaxy. Subsequently, its brightness decreases more or less smoothly until it disappears completely.

Several scenarios have been proposed for their origin. They can be massive stars that can no longer develop thermonuclear reactions at their nucleus, and are unable to sustain themselves by the degenerating pressure of the electrons, which causes them to contract suddenly (collapse) and generate, in the process, a strong emission Of energy. A still more violent process, capable of generating even much more intense flashes, can happen when a white dwarf member of a closed binary system receives sufficient mass from its companion to overcome the limit of Chandrasekhar and proceed to the instant fusion of all its Nucleus: this triggers a thermonuclear explosion that expels almost everything, if not all, the material that formed it.

The supernova explosion causes the outer layers of the star to be ejected by powerful shock waves, enriching the surrounding space with heavy elements. The remains eventually make up dust and gas clouds. When the wave front of the explosion reaches other clouds of gas and dust nearby, it compresses them and can trigger the formation of new solar nebulae that, after a certain time, originate new stellar systems (perhaps with planets, as the nebulae are enriched with The elements from the explosion).

These expanding stellar residues are called remnants and may or may not have a compact object in their interior. This remnant will eventually be diluted in the interstellar medium after millions of years. An example is RCW 86.

Supernovas can release 1044 J of energy several times. This has resulted in the adoption of foe (1044 J) as the standard unit of energy in the study of supernovae.