What's happening in space (that's interesting)

Courteous_D · 2021-03-16T17:47:35.473Z

All you need now is to get pie-eyed.

Romalar · 2021-03-16T22:59:38.032Z

None of this is truly accepted yet. I get the impression that physicists consider it interesting but quite hypothetical.

A key causality limitation of these warp drive solutions is that the inside is isolated from the outside. In other words, you can’t communicate and you can’t control the bubble you travel within by known mechanisms.

(I thought you also couldn’t enter or leave a bubble, but it sounds like there are controversial ideas on the entering or leaving at the time of the creation or destruction of the bubble if creation/destruction of the bubble is possible.)

In any case, it’s causally isolated from the outside universe during travel. There’s still a causality issue once you destroy the bubble, but nobody seems to agree on whether or how you can destroy the bubble, and whether or not doing so would destroy all information within. I think that this is one of the main issues warp drive advocates hope will be solved in the future.

Alistair · 2021-03-16T23:12:49.404Z

Puts those Spacex test launches in perspective…

MikeJ · 2021-03-16T23:14:17.978Z

Thanks for your response - that clears up a lot. I think I’d definitely want clarity on whether destroying the bubble destroys all information within before getting on a warp ship :)

HideousRex · 2021-03-17T00:12:37.924Z

collectSPACE.com

NASA taps high school students for space station duct tape dispenser |...

For more than 50 years, NASA astronauts have relied on duct tape as a fix-it-all for everything from a lunar rover on the moon to an air leak on board the International Space Station. Up until now, though, they have not had an easy way to dispense...

Enidigm · 2021-03-17T02:05:09.859Z

This sounds like a similar issue though a different mechanism with as the so called “firewall” idea in black holes (ie once something crosses the event horizon, it ceases to exist).

RayRayK · 2021-03-17T15:41:11.092Z

Two really interesting articles, particularly the Mars one!

Time

Mars Has Much More Water Than Previously Known—But There's a Catch

What if most of Mars' water never actually drifted into space?

ScienceAlert

Microbes Unknown to Science Discovered on The International Space Station

The menagerie of bacterial and fungal species living among us is ever growing - and this is no exception in low-gravity environments, such as the International Space Station (ISS).

scharmers · 2021-03-17T17:03:09.262Z

“Uh oh…”

BennyProfane · 2021-03-17T17:56:07.241Z

But that was on the ground!

Perky_Goth · 2021-03-20T17:55:09.077Z

astroanarchy.blogspot.com

Milky Way, 12 years, 1250 hours of exposures and 125 x 22 degrees of sky

This blog is all about astrophotography and it works mainly as an imaging diary. J-P Metsavainio is a Finnish astrophotographer,

Pyperkub · 2021-03-23T17:35:55.304Z

Working with Bose-Einstein Condensates in Space… to map gravity!

Scientific American

Ultracold Quantum Collisions Have Been Achieved in Space for the First Time

Creating Bose-Einstein condensates—and crashing them together—in microgravity could lead to physics breakthroughs, better spacecraft navigation and more

CLWheeljack · 2021-03-23T17:58:24.064Z

Pyperkub:

Creating Bose-Einstein condensates—and crashing them together—in microgravity could lead to physics breakthroughs, better spacecraft navigation and more

In a space-game tech tree, I would complain that “Ultracold Quantum Collisions” leading to “Improved Spacecraft Navigation” is made up nonsense with no connection between the tech and the effect, but I guess here we are.