Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.Several supernovas have been observed, in different years.
Supernovas are the explosions of large stars in space.
Since supernovas can be observed from earth with the naked eye they have been observed in prehistory (some archeaologists believe that ancient wall paintings depict supernovae) However the first person to ever record one was in 185BC by Chinese and Islamic observers.
Astronomers over many years have observed different stars. They have observed a creation of a new star (not really but like one day there will be nothing, the next maybe a small gleam and eventually a star) and the death of a star (supernovas, collapsion)
no
Stars do not create supernovas. Supernovas happen to stars. A supernova is when a star, bigger than our own sun, explodes due to the lack of gas they need.
Star Dust from supernovas is what makes technically 'everything' in the Universe.
They are not. A supernova is an explosion of a star. Blue stars usually end their lives in such explosions.
In space.
Christmas is usually observed on December 25, though some countries may observe it on other days.
A great energy and light is produced by the supernovas. Therefore, a great number of photons is produced.
Yes.