Less scientific knowledge is taught in schools
The ability to boil - freeze at the same time of a liquid or the result of an egg hatching in the sea is a little knowledge you know when you are a student.The most black hole near the Earth is red when
V404 Cygni, a black hole 7,800 light-years from Earth, emits bright red rays carrying the energy of 1,000 Suns during the gravitational pull from the star.