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heartlessvietboy 2 months ago
awesome video..thanks for sharing .. keep it up!
justinolson345 2 months ago
This has been flagged as spam show
Admiring the time and effort you put into your video and detailed information you offer.
justinolson345 2 months ago
I'd hit it.
xXDEICIDE216Xx 3 months ago
Astrophysics is the least physicsy part of physics
And theres the most woman in it
Just saying :p
0warrior4life 3 months ago
Good explanations, thanks
powerfulwords 7 months ago
It is no longer called interstellar medium. It's now called outer-stellar matter. Things that exist in the space between solar systems.
heartlessvietboy 9 months ago
can you not have a perfect vacuum? why not?
Brucy6666 1 year ago
What about Dark matter?
NinjaJedi 1 year ago
Excellent!
Lyman Spitzer was truly a Cool Guy.
rattinox 1 year ago
this chick is the bomb!
MedusasKimono 1 year ago
This has been flagged as spam show
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theseeker2k5 1 year ago
is it cold in here?
Psychosuna 2 years ago
@Psychosuna try it yourself : )
chirenbo 1 year ago
Great video. Thank you.
Narbacular420 2 years ago 2
so how many footballs would that be?
hockyjocky4 2 years ago
Highly appreciated info it adds to our knowledge. Thanks. More power :)
monvergel 3 years ago
i allways though it was empty space between stars
thadaran 3 years ago
These question and answer series are always so fun!
Keep up the good work!
CherryVincent 3 years ago 2
Thanks, very informative.
anthwhite91 3 years ago
Thank you again for another great video! ^_^
NAMLegolas 3 years ago