The first episode of the new season is out! What do you think of it?

I thought it was pretty okay. It was too self - referential for me. It kept making too many "we're back" jokes but they kind of did that the last time they were cancelled and brought back. They eased off those kind of jokes eventually the last time it happened.

I was worried about how they would handle references to more modern things as "Attack of the killer App" was really painful to watch. But it seems like they handled it pretty decently.

I'm slow, but it took me a while to realise that Scary Mirror as a replacement for Scary Door was a jab at Black Mirror.

I didn't think the episode was very funny, but it wasn't bad either. What was good about it shows promise, so I'm hopeful.

Hey folks! I’m looking for some audiobook ideas (preferably fantasy and science-fiction). I want them to have a TV series or Movie about them though I could watch before listening to them.

All ideas welcome!

Currently on book 3 of the Red Rising series. I've been trying to get back into reading for years but I've felt like "quicker" forms of entertainment (video games, etc.) have broken my ability to sit down and focus on a book. Case in point - I've had Red Rising book 1 downloaded to my kindle for years after a friend of mine gave it a overwhelmingly positive recommendation. I tried reading it a few times but my lack of attention span made me fail after just a few pages.

Well all that changed recently when I finally sat down again and gave the book a proper chance by reading more then 3 pages I feel like I'm 14 years old again just crushing books in a few days. Several times I have not been able to put the book down and read until 2AM.

Since the end of June I've finished the first 2 books and am around 1/3rd through the 3rd one.

I'm in need of "the next" great Sci-Fi / action series to binge on. I've currently gone through read most / all of:

• Craig Alanson
• Andy Weir
• Jeremy Robinson
• John Scalzi
• Jonathan Maberry
• Timothy Zahn (all his Star Wars works)
• Max Brooks (WWZ)
• Earnest Cline (RP1/2)

I like Star Trekky plots and plucky nerd protagonists.

Also, I'm finding that I'm getting a bit tired of R.C. Bray (I think he narrates the majority of the above. At some point every snarky AI sounds like Skippy). Marc Thompson of the Star Wars series is an amazing narrator.

Side comment: I'm inclined to listen to a good audiobook just for the narrator's performance alone.

How did you guys feel about this one? There were some funny moments, like T'Pring's dad being shot down by the mom whenever he was enjoying himself. Not a fan of all the teen romance movie stuff that's in the newer Trek shows though.

New to Tildes, so I wanted to kick things off by asking—do you have any sci-fi horror recs you reckon I might be interested in? Here's some of what I've read:

Annihilation by Jeff VanderMeer

• Solid read, but definitely more about the weird vibes than anything else. Sequels didn't hook me as much.

Blindsight by Peter Watts

• I generally try not to DNF my reads. But this was one of them. I'm sorry, I just can't buy vampires in a sci-fi world that's trying to take itself seriously, without proper grounding. It's also incredibly dry.

Dead Silence by S.A. Barnes

• A pretty solid read, I like how the narrative is told via flashbacks and then suddenly terminates in a way that makes you want to know more, in the most tantalizing of ways. Unfortunately I thought the reveal of the lurking horror was incredibly meh, and it went mostly downhill from there.

Diamond Dogs by Alistair Reynolds

• Fantastic novella with a mysterious locale functioning as the backdrop of the setting, and the horror elements being both external (as in the setting) and internal (how far our characters are willing to go to crack the mystery).

Paradise-1 by David Wellington

• A really solid space horror novel, with a pretty interesting protagonist trio (including a self-aware robot with plastic bodies) and it has some genuinely uncomfortable moments of horror that I can absolutely get behind. My main issue though, is that it ends in a cliffhanger and I'm still mad about it.

Salvaged by Madeleine Roux

• Decent read, but the horror reveal came super early and in reality, it's less space horror than it is human drama involving horror elements which is basically the Protomolecule from the Expanse. Fun read though, if you're okay with that.

Salvation Day by Kali Wallace

• I thought this was somewhat bland, the concept and initial plot were interesting, but it trails off and overall, overstays its welcome with some scenes that pacing-wise, feel like they belong in the middle part of the book. Some solid moments of horror though.

Ship of Fools by Richard Paul Russo

• Probably the quintessential space horror book for me. A fantastic setting, an intriguing protagonist narrative interspersed with religious themes and a genuinely solid pacing, horror-wise.

Six Wakes by Mur Lafferty

• This would have been an interesting murder mystery in space... if it actually had good and compelling characters. It does not. Everyone feels like a cardboard cutout with One Defining Trait and that's it.

The Luminous Dead by Caitlin Starling

• This was... a disappointment. I still rank it amongst the worst books I've read, simply because the protagonist is unbelievable. I can buy a protagonist doing things under duress or from being manipulated, but I cannot buy a protagonist who constantly flip flops 5 minutes after making a decision and then
  hooks up with the person who was manipulating her, because yay fucked up sexytimes! Look, I want queer representation in my books too, but this came off too much as just doing it for the vibes. Queer rep deserves better than stupid protagonists.

Walking to Aldebaraan by Adrian Tchaikovsky

• A great novella; it's a retelling of a really well-known story but reframed in sci-fi terms, and I love that approach.

We Have Always Been Here by Lena Nguyen

• A really haphazard book I think; I like some things about it, but others just don't make sense, or contradict it. E.g. the protagonist is a psychologist, but is absolutely horrible at reading human emotion and speech, and a loner who prefers robots. Throw in some Michio Kaku-esque pseudoscience and while it's not a horrible read, it feels like a book that could have been better with a rewrite. The setting and suspense are pretty neat though.

So, as you can see, I have met the good, the bad and the ugly of sci-fi horror. I'd love to find more! For non-book horror or horror adjacent works I've enjoyed, those include Alien, The Thing, Event Horizon, Sunshine, Underwater and Dead Space. Please don't recommend tie-in novels though; I can find those myself and generally I've found that they're not really up to par.

The first three episodes didn't quite hit the mark for me, but this felt like proper TOS style Star Trek.

Starfleet messing up the Prime Directive. A villain who is actually a victim. Spock is challenged on feelings versus logic. The overall theme of exploring the importance of personal memories and the straight forward metaphor of fascist regime controlling the people, didn't feel as hamfisted as I have found some of the other newer trek episodes. It does stand on its own as a well rounded singular trek story. I do however still have a bit of a problem with how newer trek seems to like hand to hand combat violence so much. Feels unnecessary in most cases.

I would like to have a discussion of the season finale and season as a whole of Silo with other book readers who know the overarching plot. Non book readers are welcome obviously, but spoilers will be here.

Overall, would watch season 2. I wanna know what ends up happening.

He says he wants the "man-machine" built with the likeness of Maria in order to "sow discord" amongst the workers. Maria is the one who is preaching a message of hope/faith and therefore keeping a revolution at bay. For how much longer, who knows. The point is, she is giving the workers hope and preventing violence.

Why would Johann want a version of Maria that encourages a revolution (death to the machines!)? It is in Johann's best interest if the workers stay succumbed, as his bourgeoisie lifestyle is dependent on their work.

(First post, sorry if the tags are bad.)

First It was mentioned that, there are 12 of them. If one dies there memory is uploaded and another gets activated, I thought it was somewhat like cylo in star wars. later, we see all of them operating together, so they sync continously or at certain period? I'm wondering how do they actually work, in data sharing/sync scenario?

PS. My heart weeps for firefly.

Several users expressed interest in reading Roadside Picnic after I recommended it in another (now deleted) topic about the movie it inspired, Stalker by Andrei Tarkovsky, which in turn inspired the S.T.A.L.K.E.R. videogame series. So I thought this would be the ideal opportunity to create a Pop-up Book Club event about it to encourage others to join us in reading it, so that we can all discuss it afterwards.

My description of the book from a previous comment that enticed the others to read it:

The basic premise was really unique and interesting, too. Without giving too much away, it's a story of Alien "invasion" only when the Aliens visited Earth, instead of doing any of the standard scifi trope stuff, the event was basically like that of a Roadside Picnic to them. That is to say, they showed up, barely noticed the humans who were tantamount to ants to them, did whatever Alien travelers with incomprehensibly advanced technology do when taking a quick pitstop on another world, and left a bunch of trash behind when they left. The story is about "stalkers" that venture into the exceptionally dangerous wasteland left behind by the Aliens in order to recover their trash (also usually exceptionally dangerous, but also exceptionally powerful) in order to sell it on the black market.

IMO, it's a very good classic scifi novel, and also a relatively short one too (only 224 pages) which makes it ideal summer reading, and ideal for this sort of thing since it’s not a huge commitment. I think this could be fun, so if you feel like joining in, please feel free to. I will also be rereading the book to refresh my memory of it, and roughly a month from now I will make a follow-up topic so we can have the discussion.

The book is available on paperback at Amazon for $15, or on Kindle for $10, but your own local retailer or library might also have a copy. The Strugatsky brothers are both long dead though, so you can always pirate it relatively guilt free if you can't find it elsewhere.

p.s. If there is a decent level of interest, and this goes well, maybe we can even make this a regular thing. :)

Edit: For all the latecomers, don't worry if you don't read the book in time for the Discussion topic. You can always join in once you finish. Tildes Activity sort, and "Collapse old comments" feature should keep the topic going for as long as people are still replying.

Let me know if you're interested by leaving a comment and I will ping you when the Discussion topic gets posted.

Any fans of this series over here? I was planning a series reread before book 5 comes out. It was going to be hosted on the bobiverse subreddit, but... well, ya know.

If enough people want to do one here I'd be happy to host it, probably starting in about 4 weeks and doing one book every 2 weeks.

Having finished out the Amazon Prime series "The Expanse" I'm now working my way through the novels and I keep coming up against a problem with with railguns. Specifically, the way that railguns are used in The Expanse doesn't mesh well with the way they're portrayed.

First, some background. Ships in The Expanse are generally unarmored. There are a bunch of reasons for this but the short version is "most things that can hit you in space will kill you anyway" and armor adds mass which makes every manuver more expensive in terms of reaction mass. So no one has armor. This is important because it means that ships in the Expanse can get ripped up by something as mundane as a stray bullet from a Point Defense Cannon (PDC). PDCs are... well, they're guns. Regular guns which are flinging around much less mass and at much lower velocities than railguns.

Thus, ships in the Expanse are equipped to handle impacts but nothing much bigger than a sand-grain moving at a few km/s.

When we're introduced to rail-guns in the series we're given to understand that they use magnetic acceleration to chuck a 5kg chunk of tungsten and/or uranium at a target at an "appreciable percentage of C." That's much faster than a bullet or any micrometeors ships are likely to encounter. Even 1% of C is ~3,000 km/s.

5 kg of Tungsten is less than you think. Some back of the envelope math suggests that's about cube about 2.6 inches on a side... which is not big. That works out to an incredible energy density which would make a lot of sense if railguns were routinely being fired at planets or asteroids but, since they seem to mainly target ships, the vast, vast majority of the energy that goes into flinging that slug at its target is going to carry through to the other side of the ship.

All total we're talking about 488.5 million Newtons of force for 1% of the speed of light. Helpfully, this scales roughly lineraly so long as we don't get too close to C and induce relativistic mass issues, so 10% of C is 4.8 billion Newtons and so on. So, that railgun slug is carrying a lot of energy. At 1% of C it represents 22.5 trillion joules of kinetic energy. Written out long-ways so we can appreciate all those zeros it's 22,500,000,000,000 J. At 10%, we're talking 2.25 quadrillion joules. To give some sense of scale, that means that, at 1% of C, three rail-gun slugs are delivering about as much energy as the bomb that destroyed Hiroshima in 1945. At 10% of C one round carries about 537 kilotons, or about the yield of a modern, city-busting hydrogen bomb.

Those are absolutely titanic amounts of energy but, realistically, they'll never deliver that much power to a target. After all, a railgun round can only push on its target as hard as the target can push back on it. If the round just punches through the entire ship like it's made of paper, most of the energy stays in the railgun slug as it exits the other side of the ship and you get a neat hole rather than a gigantic flash as trillions of joules of kinetic energy turn into heat.

And obviously, if we're trying to kill things, we want the latter. The solution to this problem is fairly obvious: you need fragmentation. While it's great to have a tungsten cube all tightly packed together as you accelerate it, if you're shooting at a ship, you want a fairly diffuse impact, especially if we're talking about a 10% of C railgun slug. There aren't a lot of things out there in the solar system which can take 500 kilotons of hate and come out the other side in one piece. Moreover, at the distances at which a rail-gun fight happens, that spread would help ensure that you hit your target. Like a shotgun loaded with birdshot, a fragmenting railgun round would provide a cone of impact rather than a line, making dodges less effective.

And, as I mentioned earlier, you don't need a ton of mass to make this work. If a PDC round can go straight through a military craft then we can safely assume that a chunk of tungsten with the same kinetic energy will do the same thing. PDCs look rather a lot like the close in weapons systems in use on many naval ships today so we'll use those as a guide. The 20mm cannon on a Phallanx CWIS tosses out rounds at about 1,035 m/s. Those rounds weigh about 100 g (0.1 kg) which gives them a kinetic energy at the muzzle of 53,422 J.

So, if we could predictably shatter our 1% C railgun round into 421,136 pieces, each would have about the same kinetic energy as a PDC round and be able to hole the ship. At 10% C we could go even smaller and do the same thing with upwards of 40 million shards. 1% is plenty though. Each hull-penetrating piece of our original 5 kg bullet needs only weigh about 1/100th of a gram, which works out to being about 1/100th of the size of a grain of sand.

Put another way, if the fragmentation of a rail round could be precisely controlled, a target ship would experience hundreds of thousands of individual hull breaches with the mean distance between them determined only by the geometry of the ship and the angle of the attack. The result of this would be either the delivery of a titanic amount of energy to the ship itself as the armor attempts to absorb the impact or, if no armor is present (as seems to be the case in the Expanse) the rapid conversion of the interior of the ship to a thin soup.

This, however, seems never to happen in the series and what leaves me scratching my head. As a book and TV series, The Expanse does an otherwise bang-up job with hard science fiction. Most things in universe make sense. This, however, does not. We have take as a given that the materials science technology exists to allow the mounting and firing of a railgun on a ship -- there are a lot of challenges there -- but the straight-line-of-fire use of them is a rare problem with the world-building.

Any fans have any suggestions to help me square this circle?

I thought it was pretty good, it's just that the whole season seemed a little off. I feel like the actual overarching plot of the season didn't even start until over halfway through.
Still enjoyed it overall and can't wait for the next season.