Astronomy questions from kids, Part 4

[jqs1943]

Albert Einstein redifined gravity. I've RE-redifined it as having a secondary field component which i've named the X-gravity field factor. Both gravity and X-gravity have a cumulative force that oppoerate in opposite directions starting at the plane of the exosphere of .0735 lbs. per sq.in. per linear mile of expansion. (Do the math all pertinent info is obvious) The gravitational force fields of each planet differentiate from others as a consequence of the heat intensity of the planet's core.

[MyMainMan09]

I havnt watched this video yet, but saw "Why cant we live without the sun", thats because its warmth gives us the living temperature

[CapPicard]

LOL at the one called Vulcan. I didn't know that honestly. But I do remember someone saying that Vulcan was rumored to be an exoplanet orbiting the red dwarf 40 Eridani-A.. Nothing found around that star yet.

I read that a trinary star system actually was found to have a planet orbiting the primary with the secondary stars orbiting the first star. It would be awesome to see the sky of said planet (three suns as opposed to our one).

[UneX100]

Better explanation in the question why space is black , because space is empty and light is invisible , and we can see planets because they reflect light of the sun

[shitsons]

lol i was just guna write that, nice comment

[candlehawk]

Anyone know how far out New Horizons is currently out?

[didjabringadidjalong]

13.23 AU from earth

almost halfway

[candlehawk]

Thanks!

[didjabringadidjalong]

no prob.

you can track and follow all kinds of instruments at nasa's website, check it out

[Smurfhat]

Yeah, really. I wish I had this guy teaching me when I was growing up.

[mikekoz68]

live without the sun?? absolutely impossible!! You don't see why no?!? How about hye temp. would drop to near absolut zero for starters!! Wow that's too dumb to address

[daymyth]

We can live without the sun... I don't know if we have all the technology yet but I don't see why not.

We just need an energy source to power all our technology.

[AlderDragon]

perhaps that technology would be available in the future, but we certainly could not do that now. If the sun instantly disappeared, we would fall out of orbit and probably be mauled by asteroids, along with freezing over within about eight minutes; the time it takes for light to travel from the sun to the earth.

[Biarry]

Strange, a couple hours has passed since I saw the last rays of the Sun, but still no snow outside...

If the Sun disappeared I think we could hold on at least a couple of days before we freeze to death :)

[TheCrimsonIdol987]

@Biarry: MUCH MUCH MUCH shorter than that. Earth is about 150 million kilometers from the sun (or 1 AU), light travels at 299,793 kilometers per second.  When you calculate the math, it's more like 8 minutes plus or minus 30 seconds.

[daymyth]

That is what I meant. technology in the future. I don't mean as of this moment. Well in 5 billion years if humanity is still around this is a question that will need to have been answered.

Maybe we could build an ark ; )

[Whisprune]

I want to know what Jupiter smells like.

[iainhecker]

hopefully better than ur-anus ;)

[peterponet]

kids with big brains or what?

[BasketballDX]

LOL 3:01

[grizzlybear3000]

another part to the why cant we live without the sun is the if the sun just disapeard there would be nothing holding us in orbit and we would fust be flung into space

[Bouncert]

Why is space black?...the kid who asked this question is a genius

[Ovidius777]

"The biggest stars have about a hundred times the mass of the Sun"

Ok, that is true

"They can have 5 or 10 or 15 times the size of the Sun"

Where does that leave W Cephei A(1,6001,900 solar radii) and VY Canis Majoris(1800 to 2100 solar radii)?

[albedoshader]

I think he's talking about "ordinary" star sizes.

[Ovidius777]

Hmmm....maybe

[albedoshader]

He also says that at the end of their lives stars get much bigger.

[Ovidius777]

Yes, but that is not the case of those two

[sid551]

and also on the biggest sun part..the biggest sun could fit in our solar system. just to give ya an idea how big it is..and on the galaxy colliding part I think Nasa said that we wouldn't that the our galaxy would miss it.

[GunzFTW99]

No, the biggest star is VY Canis Majoris and it would only reach to Saturn, not our solar system.

[sid551]

ah ok

[newlywedsfirst]

Gr.! Pet Peaves tingling!

Stars forming- its a theory.

can you have a picture that shows you a star forming?

[AstinusLorac]

There are plenty of pictures showing different stages of star formation.

If you're looking for a nifty video animation to put up on YouTube showing star formation, you'll have to wait... quite a while.

[backup24326]

please which process to rating my video

[flyingdrake]

3:02 best face ever

[reallywierdwierdo]

LMFAO!!!!

[zloben9000]

The 17th planet is called "HORNY"

[meagain2222]

space is dark because light is invisle

[Basicpiviot]

lolwut

[bobnfreely]

I love these videos, but I'm not crazy about your answer to the question about why the sun doesn't light up space. A better answer would discuss how we can only see light when it is shining (stars) or reflected (planets) into our eyes, and how the intensity of light diminishes with distance.

[Zecastronomo]

Tottaly agree.

[Atheistprimate]

Thank you for your videos, you make astronomy fun to think about by how you describe things.

[Retardretroguy]

Are brown dwarfs really considered stars? I though red dwarf were the smallest stars. Also aren't brown dwarfs too small to maintain fusion?

[ThyGoddess]

@retardretroguy: I think that brown dwarfs ARE considered stars because they form the exact same way a star's supposed to. That's why they have the star status. And I think that some can maintain fusion for a bit but not long.

[Retardretroguy]

Maybe so

[rowanofrin1]

In BA's last video (pt. 4), he explained that brown dwarfs have the minimum mass required for fusion to occur.

[wvb93]

brown dwarfs are like dud stars

[MichaelJG9]

Very nice, the part about space being finite was interesting.