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Blue_true

(31,261 posts)
29. Mr. Son's reasoning seems sound to me, but I am really not well versed in this area.
Thu Jan 10, 2019, 12:37 PM
Jan 2019

I agree with your observation on distance, not sure that I fully agree that humans won't one day reach another star.

The nearest star to us that may support life is around 1 Parsec away from us, around 19 trillion miles. The distance is enormous given that in all of our history to date, we have managed to just get a spacecraft past the Sun's heliosphere at around 10-12 billion miles. So the task of even getting a robotic craft to 19 trillion miles is enormous still, add onto that sending humans and supporting their life over such a distance, as well as getting them back safely. Totally mind boggling to think about.

Where I somewhat disagree with you is on the possibility of one day getting at least a robotic craft to another nearby star. Someone here on DU pointed out last year that if a spacecraft simply continuously accelerated at the Earth's gravitational acceleration, it would reach the speed of light in a little less than 1 year, IF IT FOUND THE ENERGY TO SUPPORT THE CONTINUOUS ACCELERATION, added the caps to highlight what I am sure you know is the big problem, finding the energy to sustain acceleration. This is where I go a little weird, I truly believe that there is another undiscovered force of nature, and when it is discovered and understood will make ultra deep space travel possible, even travel toward the galaxy core. Maybe it is my inexperience in this area, but when I see Astrophysicists explain celestial body orbits, I get the feeling something is missing. If you look at our own star, planets progressively revolve slower around the Sun the farther they are from it. The explanation for planetary orbits is primordial momentum being maintained in a vacuum, but the same people mention how collisions have changed the spins of Venus and Uranus, yet somehow did not change their revolution speed order - when I think about what I learned as an engineering student, I find it difficult to grasp how one vector of momentum can be completely reversed without a second vector being altered significantly - that has led me to believe in the unknown force concept that some people are pushing. Once we learn how to modulate gravity and the unknown force is a spacecraft, we should be able to accelerate a space craft up to the speed that our galaxy core revolves in the univers - being able to reach that speed would allow spacecraft to reach the nearest star in weeks or a few months, and allow them to avoid colliding with object in space. Just my take, admittedly an uninformed one.

CQ CQ CQ DemoTex Jan 2019 #1
2X2L calling CQ . . . 2X2L calling CQ . . . 2X2L calling CQ . . . johnp3907 Jan 2019 #3
+1 Roland99 Jan 2019 #4
QRZ VGER Zorro Jan 2019 #7
..._. janx Jan 2019 #12
Cool ismnotwasm Jan 2019 #2
I'm not saying it's aliens ProudLib72 Jan 2019 #5
Help is on the way! Sugar Smack Jan 2019 #11
The threat of Space Force! ProudLib72 Jan 2019 #18
we must have Dyson sphere Hermit-The-Prog Jan 2019 #43
Gotta be the Death Star and the Rebel Tie Fighters going at it... cynatnite Jan 2019 #6
Maybe their looking for their lost space craft? yortsed snacilbuper Jan 2019 #8
**** cynatnite Jan 2019 #13
That's hilarious! cwydro Jan 2019 #14
! crazytown Jan 2019 #25
Good one, just passed it on lol. n/t Liberal In Texas Jan 2019 #28
Sure Cannot Rule Out ETs colsohlibgal Jan 2019 #9
We almost surely have been visited by much more intelligent beings. Blue_true Jan 2019 #20
I agree that the aliens came here but trev Jan 2019 #35
How do you think they did? Not argumentative, you just made an interesting point. nt Blue_true Jan 2019 #37
I follow Zecharia Sitchin. trev Jan 2019 #40
Possible. Blue_true Jan 2019 #41
I agree with that statement. :) trev Jan 2019 #42
Klaatu barada nikto Suburban Warrior Jan 2019 #10
Radio Astronomy--one example: janx Jan 2019 #15
Could also be from a unique universe celestial body. Blue_true Jan 2019 #21
Ultima Thule, obviously... nt. druidity33 Jan 2019 #16
"Send more Chuck Berry" GreatCaesarsGhost Jan 2019 #17
Okay, I just called My Son, the Astronomer (really, that's his name!) PoindexterOglethorpe Jan 2019 #19
Isn't there a analysis that stronatolites made aerobic life possible on earth, Blue_true Jan 2019 #23
I think so. PoindexterOglethorpe Jan 2019 #24
Mr. Son's reasoning seems sound to me, but I am really not well versed in this area. Blue_true Jan 2019 #29
Good post. PoindexterOglethorpe Jan 2019 #31
The gravity core revolves at only a minute fraction of the speed of light. Blue_true Jan 2019 #32
You could put people in suspended animation and send them to the inner core of the galaxy, yortsed snacilbuper Jan 2019 #38
Actually, to travel that far, sonething would have to be done. Blue_true Jan 2019 #39
Exclusive! I got the first translation of the original message DFW Jan 2019 #22
"We are here. We are here. We are here." Crutchez_CuiBono Jan 2019 #26
We are here Leith Jan 2019 #33
Pretty cool. Crutchez_CuiBono Jan 2019 #36
old news Botany Jan 2019 #27
That guy named James is such a good actor. Blue_true Jan 2019 #30
Maybe there saying a wall won't help you if we show up. kairos12 Jan 2019 #34
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