You have several mis-statements or overly strong statements in your question.

And usually the remnants of such massive supernovas are black holes.

The more people look closely into the matter, the more complicated supernova end states seem to get.

AndCygnus X-1is the closest black hole to the earth which is at a distance of 6,100 ± 400 light years.

Cygnus X-1 is the nearest known black hole in this epoch. But some (many) black holes may be quiescent and may not be noticed by our surveys, and the relative positions of stars change a lot over time (the sun has orbited the galaxy upwards of 20 times since it's formation).

While compared to that,the cross section of the earth is almost insignificant($142334130.878Km^2$) as it is just $0.0000000000000000000000003758 $% of the imaginary sphere's surface area.

The heavy elements didn't fall onto a pre-existing Earth without them, they were present in the nebula from which the solar system formed and were incorpperated into the Earth as it formed, then concentrated as much of light-element fraction was lost when the sun first began to shine.

None of which answers the question, but it does explain why your starting assumptions are not the right one to use in understanding the problem.

You have several mis-statements or overly strong statements in your question.

And usually the remnants of such massive supernovas are black holes.

The more people look closely into the matter, the more complicated supernova end states seem to get.

AndCygnus X-1is the closest black hole to the earth which is at a distance of 6,100 ± 400 light years.

Cygnus X-1 is the nearest known black hole in this epoch. But some (many) black holes may be quiescent and may not be noticed by our surveys, and the relative positions of stars change a lot over time (the sun has orbited the galaxy upwards of 20 times since it's formation).

While compared to that,the cross section of the earth is almost insignificant($142334130.878Km^2$) as it is just $0.0000000000000000000000003758 $% of the imaginary sphere's surface area.

The heavy elements didn't fall onto a pre-existing Earth without them, they were present in the nebula from which the solar system formed and were incorpperated into the Earth as it formed, then concentrated as much of light-element fraction was lost when the sun first began to shine.

None of which answers the question, but it does explain why your starting assumptions are not the right one to use in understanding the problem.

You have several mis-statements or overly strong versions statements in your question.

And usually the remnants of such massive supernovas are black holes.

The more people look closely into the matter, the more complicated supernova end states seem to get.

AndCygnus X-1is the closest black hole to the earth which is at a distance of 6,100 ± 400 light years.

Cygnus X-1 is the nearest known black hole in this epoch. But some (many) black holes may be quiescent and may not be noticed by our surveys, and the relative positions of stars change a lot over time (the sun has orbited the galaxy upwards of 20 times since it's formation).

While compared to that,the cross section of the earth is almost insignificant($142334130.878Km^2$) as it is just $0.0000000000000000000000003758 $% of the imaginary sphere's surface area.

The heavy elements didn't fall onto a pre-existing Earth without them, they were present in the nebula from which the solar system formed and were incorpperated into the Earth as it formed, then concentrated as much of light-element fraction was lost when the sun first began to shine.

None of which answers the question, but it does explain why your starting assumptions are not the right one to use in understanding the problem.

You have several mis-statements or overly strong statements in your question.

And usually the remnants of such massive supernovas are black holes.

The more people look closely into the matter, the more complicated supernova end states seem to get.

AndCygnus X-1is the closest black hole to the earth which is at a distance of 6,100 ± 400 light years.

Cygnus X-1 is the nearest known black hole in this epoch. But some (many) black holes may be quiescent and may not be noticed by our surveys, and the relative positions of stars change a lot over time (the sun has orbited the galaxy upwards of 20 times since it's formation).

While compared to that,the cross section of the earth is almost insignificant($142334130.878Km^2$) as it is just $0.0000000000000000000000003758 $% of the imaginary sphere's surface area.

The heavy elements didn't fall onto a pre-existing Earth without them, they were present in the nebula from which the solar system formed and were incorpperated into the Earth as it formed, then concentrated as much of light-element fraction was lost when the sun first began to shine.

None of which answers the question, but it does explain why your starting assumptions are not the right one to use in understanding the problem.