What would happen to the solar system if the sun was replaced by a black hole of the same size?

Answer 1

Well, contrary to popular belief the solar system would not get sucked in.

I am sure you know what the event horizon is...but in case you dont, it is the point of no return basically in a black hole. In otherwords, you go past the event horizon, it sucks you in. But, if you dont go past it then it wont suck you in.

So, with a star the size of the sun, the event horizon would not reach far enough to suck in even Mercury.

All that would happen is we would get very cold. REALLY cold and all life would die.

But because of the gravitational pull of the black hole, the planets would continue to orbit around like usual.

I hope i helped!

Answer 2

Nothing would change so long as the planets are beyond the event horizon. If a planet passes this threshold, than it will slowly drift towards the center of the black whole and get streched into oblivion.

Oh, and considering the fact that there would be no light or heat coming from the sun anymore, the entire solar system would go dark and cold. We need the sun to survive, plain and simple.

Answer 3

I did some quick math but I am not an expert. A black hole that size would have at least 150 million times the mass of the sun or 1/667th the mass of the entire galaxy. I think it would be large enough to suck in the whole galaxy. This is all moot since I think the theory is that a black hole could never get that big. It would just keep gaining in mass without gaining in size.

Answer 4

Imagine if the sun itself suddenly became a black hole. It would have the same mass as the sun, therefore our solar system planets would remain in the same orbits as they have today. However, most life on Earth would end because it depends on energy from the sun. Also gases and dust sucked into the new black hole would be accelerated to speeds so high that internal friction would generate massive quantities of deadly radiation.

Answer 5

If the black hole was the same MASS, then all the planets would continue orbiting as usual because the gravity at the distance of the planets would be the same. If the black hole was the same DIAMETER then the black hole would have to have way more mass than the Sun does and the planets would all be pulled in by the increased gravity.

Answer 6

A Republican Woman would immediately be voted in as President of the United States.

StarBucks Coffee would rise from $4 per cup to about $40 per cup.

Ireland would invade England and take over.

Brazil would become the new Super Power in the Americas.

Chrysler, GM, and Ford would all go bankrupt. Toyota would dominate the automobile manufacturing industry for years.

Sardine fishing in the Pacific Ocean would come to a stand still. No more sardines out there...

Massive steel spikes would begin jutting out of the ocean waters within the Bermuda Triangle where they have been hidden deep in the undersea bed for millions of years.

Three new volcanoes would appear just off the California coastline.

Thousands of families would move to the Canadian North West Territories to escape the bedlam of the US East Coast.

Three American and four Japanese major banking institutions would fail within 30 days.

The Chinese pregnancy rate would take a sudden decline.

In Holland, the tulip industry would begin failing because of plants failing to bloom.

Swiss Mountain Climbing Guides would begin disappearing with no clues. Britney Spears would be elected the President of the League of Women Voters. Lilly Tomlin would become Secretary of State.

Answer 7

If by "size" you mean mass, then the planets would continue in the same orbits. We'd all just freeze to death.

If you mean a black hole of the same *diameter* ... that would be one freakin' huge black hole. The tidal forces would rip the planets apart into smears of dust and gas ... some would fall into the black hole, and the resulting blast of radiation would knock the rest out into space.

Answer 8

Both time and space would be pulled into it. I believe our entire solar system would be destoyed. Here's the thing, black holes are apparenty cause by supernovas ripping into space. As far as star stages are concerned, stars supernova as their last stage. Before that, they become red giants. When that happens to our sun, we'll be desroyed long before those black holes can get us.

Answer 9

The solar system would get sucked in by the black hole.

Answer 10

Everything out to about the orbit of Pluto would get sucked in.

Then Pluto would also, followed by most of the Oort Cloud....

This wouldn't take long...

Mercury to Mars in probably less than 3 or 4 days, Jupiter about 8, Saturn about 12, Neptune about 14, Pluto about 19, etc...