New Horizons

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New Horizons

Post by Sirius_Alpha on 4th June 2008, 5:22 pm

Today, New Horizons is 1/4 done with it's journey to Pluto. As of May 29, the spacecraft was 9.97 AU from Sol, speeding away at 18.31 km s^-1.

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Re: New Horizons

Post by Sirius_Alpha on 11th June 2008, 4:54 pm

New Horizons has crossed the orbit of Saturn!

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Re: New Horizons

Post by Sirius_Alpha on 9th October 2008, 8:47 pm

Oct 15 will mark the 1,000th day since New Horizons was launched.

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Re: New Horizons

Post by Darkness nova on 12th October 2008, 6:11 pm

This is amazing.

Also once again reaffirms that space is utterly huge, fastest thing we have yet sent out has gotten around 1.21 au farther out in 4 months.

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Re: New Horizons

Post by Sirius_Alpha on 22nd December 2008, 7:07 pm

New Horizon's progress...

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Re: New Horizons

Post by Zazaban on 6th January 2009, 7:32 pm

That's more than a third now. Very Happy

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Re: New Horizons

Post by ciceron on 21st March 2009, 9:42 am

Seems i'm unable to enter the new horizon's website. Does anyone knows what happened?
http://pluto.jhuapl.edu/ shows a forbidden error.... do they saw something they don't want us to know? (x-files music) Wink

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Re: New Horizons

Post by Sirius_Alpha on 21st March 2009, 10:32 am

That's odd. Perhaps it's down for maintenance?
Edit: The site is back up now.

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Re: New Horizons

Post by ciceron on 21st March 2009, 7:39 pm

thanks , i'm browsing it rigth now. Maybe was maintenance Smile

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Re: New Horizons

Post by Sirius_Alpha on 12th April 2009, 4:15 pm

New Horizon's progress again.... (I'm unsure what happened to the January image).


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Re: New Horizons

Post by gremlin66 on 20th April 2009, 3:47 am

nearly 1.7 AU in 7 months, that's fantastic. we're about 7-8 AU's from Uranus orbit and close to midpoint in the journey.

anyone notice that it seems to be slowing down as it gets further out from the Sun? why does that happen?

all I know is I can't wait to see the pictures!

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Re: New Horizons

Post by Sirius_Alpha on 20th April 2009, 8:56 am

anyone notice that it seems to be slowing down as it gets further out from the Sun? why does that happen?
Throw something up in the air and watch it. It slows down, reverses direction, and falls back. Why? Gravity. The same thing is happening with the New Horizons spacecraft. As it goes away from the sun, the gravitational pull slows it down. But New Horizons is going so fast that the sun won't be able to pull on it hard enough to get New Horizons to stop and fall back -- New Horizons has escape velocity. It will continue to slow down indefinitely, but the rate at which it slows will decrease as it gets farther from the sun, due to the decreasing gravitational pull (gravitational attraction decreases with distance).

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Re: New Horizons

Post by ciceron on 20th April 2009, 9:43 am

Unless it gets boosted by the pull of another body , that is.

Is the New Horizonts heading toward some interesting star ? Can't find a way to determine it

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Re: New Horizons

Post by Sirius_Alpha on 20th April 2009, 4:17 pm

I've heard the question asked before, and the answer was "no". I don't know much more than that.

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Re: New Horizons

Post by gremlin66 on 20th April 2009, 6:46 pm

They could at least aim it for Alpha Centauri. Unless of course Pluto is in the complete opposite direction. Wink

as long as we're on that, how long would New Horizons take to reach Alpha Centauri at it's present velocity?

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Re: New Horizons

Post by Sirius_Alpha on 20th April 2009, 8:12 pm

gremlin66 wrote:how long would New Horizons take to reach Alpha Centauri at it's present velocity?
A quick calculation suggests 80,560 yr.

All the planets in our solar system are roughly coplanar, Alpha Centauri is far outside this plane, so indeed, Pluto is in the complete wrong direction.

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Re: New Horizons

Post by Sirius_Alpha on 5th June 2009, 4:27 pm

New Horizon's location. Almost half way from Saturn to Uranus. Unsure what happened to the previous image. Uploading to Photobucket from now on, which seems more reliable.


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Re: New Horizons

Post by Sirius_Alpha on 8th September 2009, 10:54 am

About half way between the orbits of Saturn and Uranus.

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Re: New Horizons

Post by Edasich on 10th September 2009, 11:43 am

How long should it take to reach Pluto? (if it really will)

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Re: New Horizons

Post by Sirius_Alpha on 10th September 2009, 12:29 pm

July 2015.

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Re: New Horizons

Post by Darkness nova on 4th October 2009, 1:36 am

Edasich wrote:How long should it take to reach Pluto? (if it really will)
What do you mean by "if it really will?"

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Re: New Horizons

Post by Sirius_Alpha on 22nd December 2009, 12:39 am

Darkness nova wrote:What do you mean by "if it really will?"
There isn't a whole lot that can really stop it at this point.

Updated progress.

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Re: New Horizons

Post by Sirius_Alpha on 5th February 2010, 8:18 am

Newer HST observations reveal changes to the surface of Pluto.



Paper:
http://www.boulder.swri.edu/~buie/biblio/pub073.pdf

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Re: New Horizons

Post by Olympus Mons on 15th February 2010, 6:24 pm

To my understanding it will take Voyager 2 hundreds of thousands of years to reach the nearest star. Since Voyager 2 has a greater velocity than New Horizons it will take even longer. I imagine someday we will be passing them with some exotic technology. They would make nice museums I am sure.

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Re: New Horizons

Post by Sirius_Alpha on 25th May 2010, 12:02 am


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Re: New Horizons

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