Alien megastructures like massive telescopes the size of large planets used to study other civilizations in the galaxy could create transiting light curves that mimic planets.

They could also create light curves that appear to be noise as each orbit could present the megastructure with a different orientation.

These light curves would also likely not correlate with radial velocity indicators because they would be essentially massless compared to a similarly sized planet.

Who wants to search the data for these possibilities? We've all heard about those systems with massive changes in the light curve, put smaller changes should be evaluated. With current physics, the best way to explore the universe is with massive telescopes, and one would expect any advanced civilization to be using them.

Doing a question on radial velocity variation for a planet around a distant star. I've got what I believe is the correct answer, but I'm stuck on the units. I can't seem to find an answer online and doing a dimensional analysis gave me "m^3 kg^-1 s^-3" which... might be right but it's a mouthful and I wouldn't know where to start on simplifying it.

Any help is much appreciated.

So I am reading up on extra solar planet discovery techniques and was just wondering if there where multiple planets orbiting close to a sun would it not mess up the Doppler effect since two or more masses would be pulling on the sun and thus you would not be able to tell its true wobble? Thanks in advance!

In other words, how do scientists rule out the possibility that the wobble is caused by multiple planets at different orbits, or by one planet with a moon, etc. ? It seems like a distant observer using the radial velocity method to detect the Earth would have a difficult time distinguishing the amount of the Sun's wobble caused by the Earth versus that caused by the seven other planets.

My question excludes planetary detections that can be verified using the transit method.

When a cd spins too fast it begins to warp, and eventually shatter/explode... Why? The disk wobbles perpendicular to the direction of the rotation of the disk and the amplitude of the wobble grows with each oscillation... I saw it watching a Slow Mo guys video...

https://www.youtube.com/watch?v=zs7x1Hu29Wc

I'd first like to clear up a few things:

• While I'm not new to Nerf having owned several blasters, I only have some knowledge in terms of modding, custom blasters and dart types.
• Since I don't participate in local Nerf wars, I won't really have to worry about an FPS limit, although I'd like to know what is the maximum 'safe' FPS is. (As in at what velocity do darts become dangerous? e.g. damage walls, windows, cause bruises, etc.) So if ever a stray dart flies off and hits someone/something, I can be sure that it won't be causing physical damage.
• Essentially, my goal is to build a blaster that I can shoot around my backyard and hit targets accurately from a distance much further than a typical stock blaster can. I understand that a 'sniper rifle' in the traditional sense can't realistically be achieved, as Nerf darts are easily affected by wind and drop much quicker than real-steel ammunition.

The Blaster

• So there are many options to choose from: springers, flywheelers or HPA and whether they're Nerf branded or custom kits. What would you recommend as a base for my 'marksman' blaster?

The Darts

• What I've gathered is that the type of dart dramatically impacts accuracy, and it seems that half-length darts provide the greatest accuracy. Does the dart tip (whether it's accustrike, wafflehead, etc.) matter as well? Since darts have hollow centres, does adding mass to the dart improve performance at all?

Mods

• I've heard of terms being used such as scar barrels, brass-breeches, plunger tube seals and plunger padding, what are they and how does it affect performance? Also, I've seen metal replacement parts for the trigger, plunger and bolt sled, are they also worth purchasing?

Lastly, are there any other factors and mods to consider? Sorry for the large post, it's just that I've taken a much greater interest into the modding scene and kinda want to jump into making some high performance blasters.

Suppose a satellite body with a fraction of the mass of our moon orbits a planet of considerable mass (giants, brown dwarfs etc.). Hypothetically, could such a satellite orbit so quickly that conditions on the outward-facing surface resemble Earth's surface gravity? I.e., when standing on the outward-face, the inward pull of the planet as well as the centrifugal force of the orbit balance out to resemble gravity on Earth. Would this be physical possible? How high would such a satellite's velocity have to be, and how massive the central body? Would it have to be a star or could it be as small as a planet?

Yes

Welcome to “The Eternal Pursuit of Atomique”, a complete guide to Atomic camo by XVI!

Volume 2: Submachine Guns

https://preview.redd.it/wgsgrxodta881.png?width=1643&format=png&auto=webp&s=f30f56af0560e8fc860e9b3e589c2d5bd04356ae

Did you miss Volume 1: Assault Rifles?

• Volume 1: Assault Rifles - bit.ly/3ehcnEC
• Volume 2: Submachine Guns – RELEASED!
• Volume 3: Shotguns - Thursday, December 30
• Volume 4: Light Machine Guns - Sunday, January 2
• Volume 5: Marksman Rifles - Wednesday, January 5
• Volume 6: Sniper Rifles - Saturday, January 8
• Volume 7: Pistols - Tuesday, January 11
• Volume 8: Melee - Friday, January 14
• Volume 9: Launchers - Monday, January 17

This guide is designed to be one of the most comprehensive, detailed, and helpful resources for you on your Atomic journey. What you will find in this guide:

• The “Cookie Cutter” loadout for any SMG with best attachments analysis
• A strongly-tested, highly-recommended general build customized to each SMG
• Listing of challenges you can combine with others for maximum efficiency
• Individual guides and prebuilt loadouts for each 3-attachment challenge, tailored to best completing that challenge
• Playlist, pacing, map, and playstyle recommendations
• Longshot spots & recommendations
• A lot more you aren’t expecting.

Here is the complete gallery of every loadout recommendation in this guide!

I personally have achieved Atomic (minus the glitched Panzerfaust). This is the second of nine volumes on the complete Atomic grind, one for each weapon category, all rolling out on this subreddit on the dates listed. If this guide looks helpful to you, you will certainly want to stay tuned for the next volumes. The guide is broken up into the following sections. Let’s begin!

1. The Cookie Cutter Loadout (Best SMG Attachments Analysis)
2. General Class Setup
3. MP-40
4. Sten
5. M1928
6. Owen Gun
7. Type 100
8. PPSH-41
9. SMG Longshot Guide
10. Conclusion

Since Vanguard follows the traditional “Get X gun(s) gold in this weapon class”, you only need to get any six SMGs Gold in order to achieve Diamond for SMGs – so you don’t need to do all of the base weapons, you can do any combination of base weapons and DLC weapons so long as you hit that required Gold count. Naturally this becomes much more flexible as Vanguard ages and adds more DLC weapons, but there are currently no DLC SMGs in Vanguard. As such, at this time, it is mandatory that

Hi folks of this subreddit!

In this post, I want to give new players a hint, how make ridiculous money at the start of your campaign. With ridiculous, I mean having 1 billion worth of ships after about 12hours.

All without any repurcussions reputation-wise! This will be from the perspective of the Terran Cadet start, but it is generally applicable to all starts. This is not my finding, but of many different users on this subreddit. Therefore I want to extend my thanks to all you users out there who showed me the way.

So let's get started:

As you propably already know: Crystal hunting, mining and adv. sattelites trading have all been nerfed into oblivion as of 4.0 and onwards.

The only way to fast money in ealy game now, is piracy. This means making pilots abandon their S- and M-ships or boarding L-ships and above. If you don't want to do criminal things in the game, then this is sadly not for you. And why specifically terran ships?

Answer: Not only the ships, but rather also their space: It seems to be hard-coded, that at all times, there are always a number of XL-ships present. If you don't look, you might think they just spawn in. It's propably thanks to their simplified economy in resource rich and safe sectors. Unlike the Split who are surrounded by Xenon-Strongholds. Also they don't start at war with anyone, but you can change that as player in later missions. In fact, it's the opposite really. They easily and happily destroy the Xenon and when they do go to war with anyone else, they usually steamroll them.

Again, this applies to the Terran Cadet start, but it should be valid for all gamestarts with minor differences.

1. Bar a custom gamestart, all of us start in an S-class ship. Some with a small fighter, others in a scout. The Terran cadet starts in a Kukri fighter. A very bad ship in my opinion, very slow and low shield capacity. I recommend to play the story for now until you get the Gladius heavy fighter from your fellow cadet. Not a good ship too, even slower, but with a bit more shields and 4 weapon slots.
2. If you are confident in your piloting skills, you can instead immediately travel towards the outer edges of Sol and look for Kuraokami and Moreyas, both ships from the Yaki Pirates. Their icons on the map and radar are pink, as they are hostile.
3. These ships will get destroyed relatively fast after gamestart and won't appear again after that. For the reason jump to step 20. It is not quite easy, but certainly possible

In the latest Tango's video the AI Holsten mentioned that a 1.21GN force would be required to return the moon to it's previous orbit, which sounds like a lot but i decided to find out how much that really is

One way to apply a next to instantaneous force is pistons, so if we find out how much force can a piston exert we can find out how many pistons would be needed to move the moon

Knowing that pistons can move 12 blocks and that gold blocks are the heaviest blocks at 19,300kg per block (based on this article: https://www.forbes.com/sites/briankoberlein/2018/07/09/what-minecraft-can-teach-you-about-neutron-stars/)Now we only need to find out the gravitational acceleration to find out how many newtons of force would be required to lift 12 blocks of gold

Ok i'm dumb netherite blocks take a lot more gold than gold blocks so i redid the calculation assuming that netherite is lonsdaliate as suggested by game theory and getting the density values from http://webmineral.com/ (because they give no units for density and i can't be bothered to figure it out i just used the gold block weight from the article above in combination with the densities to calculate the netherite weight)

For this step i opted for a simple fall test timing myself falling 197 blocks, and with 2 measurements of 4.35 and 4.55 seconds which resulted in the acceleration being 19.03 and 20.82 i decided to take the average of 20m/s^2 The accuracy of the acceleration measurements could definitely be improved but that doesn't matter for the rough calculations

Now that we have gathered the info to calculate the force each piston can exert we can simply use newtons second law (F=m*a) and we get F = 12 * 19300 * 20 = 4 632 000N

calculations with Netherite

Converting the 1.21 GN to N gives 1 210 000 000 and 1 210 000 000 / 4 632 000 = 261.2 pistons and that is definitely doable

just over a stack of pistons is honestly a laughable amount to move a full moon

But the analysis doesn't end there, i want to fact check the 1.21GN force number too

Here a discrepancy with orbital mechanics and what's in the video can immediately be noticed,

Let's assume that the moon is a rocket with an engine that can apply force

CHAPTER 1

My adventure started last February—well, I guess you could say it really began 25 years ago when Carla gave birth to our daughter, Beatrice. My wife and I were fairly well-off residents of Uranus's orbital ring, known colloquially as The Wreath. I was ready to spend the rest of my life with her, making my way selling mass privileges and raising our daughter to be an honest Uranian.

Then Carla left me just days after Beatrice's cord was cut. I begged her to stay. She said she had to "chase her dreams" in the Kuiper Belt and walked out of our apartment with bag in tow.

Poor baby Beatrice, poor baby 'Trice, deprived of her birth mother.

And I had been little better, being so angry as to abandon my lucrative position on The Wreath and move us to the Mid-Sky region of Uranus. We settled down on one of the hundreds of Floaters (a giant planet term for a mobile aerostat colony) that mine the planet's atmosphere for rare gasses and hydrocarbons. We've been on our own and financially struggling ever since.

Fast forward to last February. Beatrice was rarely home and overall uncommunicative. She kept busy filling the odd position to earn her keep and staying overnight with various friends. That was fine; at least she stayed aboard the ship.

I woke up on February 5th to a lonely room, slid out of my bunk made of PVC and netting, and hit my head on Beatrice's identical one above. About an earth-normal gee greeted my legs. After stretching I strolled out the door in my pajamas/uniform (the dichotomy of dress and casual doesn't exist when you’re only allowed one kilogram of clothing). The neighborhood I lived in was very close-knit. Everyone knew each other by full name, smell, and, thanks to the centimeter-thick walls, sound.

My neighbor, Quentin, barreled out of his room after me yelling, "Hey Doug, slow down. Doug!" I increased my speed, but that jet of a man was faster. "Why didn’t you ease up?" he said.

"How am I supposed to avert our morning talk otherwise?"

"Har, har. Tissue paper does well to avoid tight asses."

"Tell that to the makers of our uniforms."

Quentin turned the beginning of a laugh into a disgruntled huff (lest he admit my joke was better) and changed the subject. "Intakes are running sub-optimally," he said, "no doubt a consequence of assigning youths to the maintenance crew."

I didn't tell him that Beatrice had been assigned there for a few weeks in December. Why should I? Almost everything was automated down there and what

##"It ain't magic if it ain't flashy. Danmaku's all about firepower."

#Marisa Kirisame

Themes

The "Perfectly Ordinary Magician", Marisa Kirisame is the deuteragonist of the Touhou series, the best friend of Reimu Hakurei, and the (self proclaimed) second strongest human in Gensokyo. Originally just an ordinary girl from the Krisiame household living in the human village, Marisa struck it out on her own in the forest of magic and through lots of hard work and trial and error, has learned enough magic to be able to tangle with some of the strongest residents of Gensokyo. Marisa operates a magic shop out of her house that performs all variety of odd jobs (even if she never gets any customers) and will also pursue after any incident or event she finds interesting. While she can be extremely blunt and selfish, her outgoing, straightforward personality and tendency to treat everyone the same regardless of race or power means she tends to get along with a whole variety of youkai. She also has a habit of trying to steal anything interesting interesting that isn't nailed down, often under the pretense of "I'm just borrowing it until I die of old age"... even though she also has some interest in immortality.

Note:

• Source Index

• This thread covers only Windows games and spin off material. Click here for PC-98 feats

• Perfect Memento in Strict Sense and Symposium of Post Mysticism is an in universe book written by Hidea no Akyuu. She has a tendency to exaggerate and speculate, so her claims should be taken with a grain of salt.

• Marisa is the deuteragonist and scales to the majority of Touhou characters. As such here is every existing Touhou respect thread for scaling purposes

##Defining Some Terms

Spell Card System: The Spell Card Rules were put in place by Reimu Hakurei in order to make duels between everyone fair, formalized, and safe. It is also the method nearly all Touhou characters will use in-character. Spell card battles have very clearly defined rules and attacks that are agreed upon before a duel with the purpose being that the most beautiful attacks win. In general Spell Cards

The Rask Rebellion Cover

At the edge of Coalition space, a kingdom of desert pirates launches a surprise attack against their former allies, plunging the territories of Borealis into a brutal civil war. As the cruel Matriarch deploys her armies to take control of the planet's trade routes, the UNN lands an armored battalion on the surface in an attempt to restore order. Little do they know that she has more up her sleeve than ramshackle technicals and stolen anti-satellite weapons. On one side, a multi-species scout vehicle crew tries to find common ground, while on the other, the newly appointed Fleet Admiral wrestles with the weight of her duties.

Please note: this story contains adult content which will be tagged on a per-chapter basis.

CHAPTER 1: PREEMPTIVE STRIKE

The sound of claws scratching against the metal deck echoed through the cramped corridor as the Crewmaster made his way to the bridge, ducking under exposed pipes and bundles of electrical cables. This warren of winding passages was made for humans, not Borealans, his eight-foot stature requiring him to hunch over to avoid hitting his head. Their smell still permeated the vessel, but it was fading now, overcome by the scents of oil and alien machinery.

His furry ears brushed the doorframe as he emerged into a more open space, finally able to stand upright. Before him was a room occupied by half a dozen console banks, more of his kind hunched over before the glowing, holographic displays. They waved their clawed fingers through the projections, adjusting their course, and tracking radar contacts. The bridge was a little more homely than the rest of the ship. As the command center, the bare hull had been decorated with crimson drapes in the traditional style, the flowing fabric cascading from the ceiling to the carpeted floor. A large window wrapped around the room, occupying his entire field of view. The glass doubled as a monitor, displaying information in small boxes that the crew were moving around with gestures from their furry hands, the angular hull of the frigate visible beyond.

It extended into the distance like an artificial horizon, tapering into a dull point a good two hundred meters in front of them, the subtly raised conning tower giving them a fine view. It was broken up in places by the streamlined blisters that housed the ship’s railgun turrets, and the closed hatches of the torpedo launch tubes. The vessel bristled with weaponry, but it