Is it an asteroid? A stray black hole? Or will it just fall victim to the sun when it becomes a red giant?
2007-02-05 03:57:44 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
People are confused with the phrase "end of the world"
Does it mean the destruction of the Earth,because if so, it has been here intact for 4.5 billion years, so what makes anyone think it will be destroyed. The Solar System is infintely more safe than it was 4 billion years ago.
Or does it mean just the end of the biosphere and consequently all life. Even so, it would take soemthing the size of one of the giant asteroids in the ateroid belt, maybe 100 km across to do that. And again, it has not happened. There have been impacts of asteroids 10km and perhaps a bit larger but life has bounced back.
Or do you mean the end of our species - perhaps a 10 km one like the dinosaur killer might do that.
Or do you mean, end of civilisation? Might only take the impact of a body 1 km across to so put the world we live in into economical chaos that civilisation collapses.
But to destroy the world of 21 billion trillion tonnes, nothing has done it yet and nothing will end it til the sun ends its life in about 5 - 8 billion years.
However, the end of the world for us is if we couln't have MP3 any more, eh?
2007-02-05 05:41:25 · answer #1 · answered by nick s 6 · 1⤊ 0⤋
The red super giant Sun. An asteroid could kill all life on Earth but the planet would still be here.
2007-02-05 06:00:40 · answer #2 · answered by Belru Tytor 2 · 0⤊ 0⤋
The sun will be come a red giant in about 4 billion years, expand and vaporize the earth
2007-02-05 04:12:04 · answer #3 · answered by Gene 7 · 0⤊ 0⤋
I think the most likely end for life on Earth would be an impact of an asteroid. For Earth itself, it would be the death of the sun.
2007-02-05 10:29:46 · answer #4 · answered by ceratias 2 · 0⤊ 0⤋
the most likely end for Earth? the unknown..
Who knows?
Something unknown might happen, it might not be world wars, a black hole or even an asteroid that will have an end to earth.
2007-02-05 04:05:29 · answer #5 · answered by Anonymous · 0⤊ 0⤋
the sun will fry the earth in 2 billion years when it gets to hot for the earth to support life, then in 5 billion from now, the sun will vap the earth as a red giant
2007-02-05 04:20:08 · answer #6 · answered by darkpheonix262 4 · 0⤊ 0⤋
Well all your possibilities are likely. However as long the planet survives the cosmic shooting gallery for the next 4+ Billions year it will be absorbed by the sun when it expands after running out fusable hydrogen.
Making predictions is very difficult, especially about the future.
2007-02-05 04:21:52 · answer #7 · answered by j_mcard1e 2 · 0⤊ 0⤋
the sun will become a red giant.
after a long time, all the stars in the univ. will lose their energy so there won't be any heat nor light thus preventing life as we know from coming again.
2007-02-05 04:01:18 · answer #8 · answered by srmurali100 2 · 0⤊ 0⤋
Liberal rhetoric will spawn additional CO2, leading to an increase in the green house effect. How ironic.
2007-02-05 04:06:16 · answer #9 · answered by Anonymous · 0⤊ 1⤋
I wouldnt worry about it for the time being.
2007-02-05 04:06:27 · answer #10 · answered by goring 6 · 0⤊ 0⤋