The ending's not explicit on that point, but it stands to reason that FTL has ended too. [Edit: I misread. I've retracted most of this paragraph, as you weren't arguing otherwise.]
Originally Posted by Doodler
Grandpa implies _very_ strongly that living memory has passed (including the very long lived Liara, who may have been on the Normandy) without a return to spaceflight, let alone any contact with other worlds.
Here are the things we know definitively have been directly impacted by detonating the Crucible.
1) All Reapers in the galaxy. (Destroyed.)
2) All Reaperlings in the galaxy. (Destroyed.)
3) The Citadel. (Destroyed, although that has other candidate explanations.)
4) The Catalist. (Ended, may or may not be a result of the destruction of the Crucible by the Citadel.)
5) Mass relays. (Burned out and destroyed transmitting the destroy/control/merge instruction.)
6) EDI. (Not caused by the destruction of the Normandy, the landed Normandy has power enough to run EDI's server. The Fembot is a terminal, not a server core.)
7) All Geth in the galaxy.
8) The Normandy (Crashed, but there are other candidate explanations. I know EDI is very important to him, but had EDI been the motivation for fleeing the battle, it would have been an act of mutiny/piracy/cowardice during a war, and he wouldn't have known the crucible would have offed EDI anyway.)
7) Shep. (Although there are other candidate explanations.)
8) We also don't see anybody fire a weapon from the moment the effect wave hits. (Other candidate explanations.)
I can only think of one plausible mechanism that might cause all of this: the induced dissipation of Element Zero, causing the cessation of the mass effect (and any technology that uses the mass effect.)
It seems very logical to me that the universe is again subject to physics as understood by Einstein/Hawking. Thus, no FTL, no eezo power generation, and all ships, everywhere, are probably doomed.
It would be interesting to know what happens on Earth. Hopefully Wrex can keep the Krogan contained/content until they die out.
I'm pretty sure the Quarians and Salarians are probably having herds of cattle in the aftermath of their destruction. The Asari and Krogan have lifespans that leave the aftermath still tolerable.
"Words that make questions may not be questions at all."
- Neil deGrasse Tyson, answering loaded question in ten words or less
at a 2010 talk MCed by Stephen Colbert.