ScienceCasts: Alien Matter in the Solar System

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"Alien matter" detected by a NASA spacecraft orbiting Earth shows that the chemical make-up of our solar system differs from that of the surrounding galaxy. Researchers discuss the possible meaning of this mismatch in this week's ScienceCast video.

• Category

  Science & Technology

[CaptainOfGames]

Actually it's just right outside the solar system.

The nearest star is 401.000.000.000.00 km away.

And Voyager 1 is 18.491.989.617 km away.

So it still has 40.081.508.010.383 km to go. (If it were going the right way).

It travels 3.768.950.00 km a year.

So it will reach the nearest star in 106346 years. But the battery will die out in 12 years.

[alttplink]

Why can't Christians use grammar?

[shihui1237]

Jump space/hyperdrive in starwars

[CHAPI929292]

Actually, why are they born without brain..?

[MrMinecraft6222]

I don't like these conversations

[Geofrey Narciso]

Not all.

[Linchakungs]

He's probably an an angry atheist pretending to be christian to get people angry at christians. Christians tend to get a bad rap these days because of a lot of hypocrisy...we're not all that bad though!

[pcred567]

That's alright. =P Thanks for the answer, BTW. XD

[Ahmed Malik]

OH lol thats what ur asking for lmao, well if the thrusters are using the batteries, then poof, battery consumption... otherwise if they use fuel (most likely hydrogen) then the battery is probably only used to transmit data between satellite and earth

lol sorry for the confusion

[pcred567]

Yes, I know all of that already. Acceleration in space, blah blah blah. Simple. I was asking what mechanism the batteries use to accelerate the spaceship. Obviously, they're not burning anything, and having something like a spinning blade won't work at all in space due to the lack of atmosphere. So I'm asking you, WHAT COULD THE BATTERIES DO THAT MAKES THE SPACESHIP ACCELERATE? =P

[Ahmed Malik]

cont

heres another way of thinking about it, an asteroid in space will travel at the same speed until a force acts on it, correct?, lets say the asteroid got caught in the gravitational force of a black hole, or a sun, etc. the gravity will cause it to accelerate (positively or negatively depending on location and direction), the thrusters will accelerate the satellite until it runs out of fuel, which then will continue to move at the speed at where the battery died.

its VERY hard to explain lol

[Ahmed Malik]

k, imagine throwing a baseball on earth, it eventually stops and falls to the ground, now if u throw a baseball in space, it will continue to go at the speed that u threw it at infinitely until it collided with something or is acted upon by another force, now if u added a jet engine to that baseball, it starts off with the initial velocity it was launched at, and then the force of the thrust will be pushing it forward faster and faster,