Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Science

Warren DeMontague

(80,708 posts)

6. I'm just using the proposed designs people have been talking about recently, scaled up.

Reply to defacto7 (Reply #5)

Sat Mar 11, 2017, 10:34 PM

Mar 2017

https://www.scientificamerican.com/article/inside-the-breakthrough-starshot-mission-to-alpha-centauri/

Say you've got this super powerful source to provide the "push", right... but unless you've got one on the other end to push in the other direction, how to stop?

Unless the ship itself is the source, but I wasn't thinking that was what they were saying.

And yeah, obviously highly speculative. But fun to think about anyway.

Edit history

Please sign in to view edit histories.

19 replies

= new reply since forum marked as read

Highlight:

Could Mysterious Cosmic Light Flashes Be Powering Alien Spacecraft? [View all] Judi Lynn Mar 2017 OP

Warp Speed 10? catbyte Mar 2017 #1

They're extra galactic. longship Mar 2017 #2

Fascinating, if a bit far fetched, speculation Warren DeMontague Mar 2017 #3

Theoretically point your radio in the oposite direction defacto7 Mar 2017 #5

I'm just using the proposed designs people have been talking about recently, scaled up. Warren DeMontague Mar 2017 #6

Use a two-part sail, which splits in two for the deceleration phase. eppur_se_muova Mar 2017 #7

Cool. thanks! Warren DeMontague Mar 2017 #8

pdf link 3blake7 Jul 2019 #16

The document you're looking for canetoad Jul 2019 #17

thanks 3blake7 Jul 2019 #18

The guy who started the kickstarter for LunarSail BumRushDaShow Jul 2019 #19

I hope so.... dhill926 Mar 2017 #4

"Take us to your le--- actually, come to think of it Warren DeMontague Mar 2017 #9

No one would want to admit who/what the leader is! Judi Lynn Mar 2017 #11

Seriously, or make up some excuse. Warren DeMontague Mar 2017 #14

I doubt its aliens. cstanleytech Mar 2017 #10

What intelligent society would ever want to communicate with a violent, greedy, dishonest one? n/t Judi Lynn Mar 2017 #12

Probably not many unless they wanted to help but its a moot point as the events cstanleytech Mar 2017 #13

There's no difference between a directed high energy propulsion system and a weapon. hunter Mar 2017 #15