the comet Elenin will be an extintion level event arriving on Aug.22-Sept.6th.
no time soon
No, when the Earth first formed it was molten, it had to cool before liquid water could collect in its surface. There is also a thought that Earth's water may not have formed form the initial materials making up the Earth but been delivered to the Earth by comet or asteroids impacting the Earth later.
A comet is a ball of ice and dust that passes "near" the sun during part of its orbit, which heats it to the point that it outgasses and blows of part of its mass on each orbit, forming a sort of streamer or "tail". There are lots of comets. The periodic meteor showers we get are debris from comets that have mostly disintegrated. We don't know of any big showy periodic comets like Halley's (usually, its most recent appearance was rather disappointing) due to make an appearance in the near future (unless you consider half a century "the near future). However, there's always hope. (If by "heading towards Earth" you mean "will hit Earth causing disastrous results" then the answer is no. This can happen, but it's extremely rare and there's no real reason to think a significant impact will occur anytime soon.)
That's a nonperiodic comet, meaning it won't come back any time soon. It is hard to determine the exact period of such comets.
Near
soon, very very soon....
He was born and died while Halley's Comet was passing by.
"In the near future" could be rephrased simply as "soon".
Bonaventini has written: 'An account of the comet, which now appears in Italy, and will soon be visible to all parts of Europe'
"coming soon / in the near future"
There is no indication that a comet may hit the earth in the foreseeable future. NASA and other agencies are continually looking for and tracking celestial objects whose orbits may bring them relatively close to Earth. There could possibly be a comet-Earth collision some time in the next 10,000,000 to 100,000,000 years, but none is predicted. But in 2012 the earth may be hit by a small shower of meteorites
soon in the near future