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Jets From Black Holes Cause Stars to Explode, Hubble Reveals
  • We know it exists because it does interact with gravity.

    More accurately, we believe with high probability that it exists because our observations show that the rotation of stars in galaxies don't behave consistently with the amount of visible matter we can see, assuming that we've correctly calculated the universal gravitational constant (from observations of the solar system), that it's actually a universal constant, and that general relativity is correct.

    Maybe there's another explanation. But dark matter fits really, really well with the rest of our observations, without breaking everything else we believe we know.

  • "I LOVE haunting this old Victorian home" [Sarah's Scribbles]
  • Who wants a bland white wall?

    Hang some shit on that wall. Paintings. Photographs. Random yard sale taxidermy.

    Modern styles can still have plenty of personality. Yes, one of the modern trends is minimalism, but that's not the only modern trend, and there are plenty of ways to explore your own sense of style within a modern sensibility.

    I like having a house with really, really good insulation, with good plumbing and electrical up to 21st century fire/safety standards. I like having ducts for my central heat pump and air conditioning.

    I can fill in the appearance and style stuff after that on my own.

  • Empires fall
  • Oh and Best Buy owes its survival to investing heavily into cell phone plans and contracts. They would've folded without it.

    Radio Shack limped along for maybe a decade after their core business stopped making sense, because of their cell phone deals. This Onion article from 2007 captures the cultural place that RadioShack operated in at the time, and they didn't file bankruptcy until 2015 (and then reorganized and filed bankruptcy again in 2017).

  • In honor of the start spooky season (yay!), I have a question about an apparently beloved spooky meme/skit. What about "David S. Pumpkins" is so funny?
  • It feels so real in how disappointing the experience becomes for the straight characters.

    This hits the nail on the head. It's funny because of the point of view of the actual participants.

    The funny thing about this thread is that there are so many comments essentially agreeing with the central premise of the sketch, that it's relatable and disorienting when you stumble onto some kind of established fandom and can't seem to keep up with why it's popular or what is or isn't "part of it." The popularity is confusing in itself, and the need to dissect the lore (as OP is doing, perhaps even unintentionally following the sketch itself) distracts from the original purpose of going there to be entertained.

    In other words, the sketch is funny and relatable exactly for the same reasons why much of the audience doesn't find it funny and relatable.

  • Harris Backs Eliminating Senate Filibuster to Restore Federal Abortion Rights
  • The filibuster makes a big difference when the president, the speaker of the house, a majority of the House, and between 50-59 senators all support something.

    If you don't have all of those others lined up, the filibuster isn't the only hurdle.

    For example, Biden hasn't been president during a Democratic-controlled House, so everything he's accomplished legislatively has been with the support of either Kevin McCarthy or Mike Johnson, who have been the critical veto point while he has been president.

    Plus with only 51 Senators in the Democratic caucus (and 50 in the last Congress), getting 50 votes through Manchin and Sinema has been a challenge sometimes, too.

    The last time the filibuster has mattered for a Democratic president in actual legislation was the 111th Congress, when Democrats last held a trifecta. The Democrats did abolish the filibuster for presidential appointments, which don't go through the House, during the 113th Congress, when they controlled the White House and the Senate.

    I think it's pretty obvious that the filibuster is gone the next time it matters, the next time there's same party control of all 3. It's just that it's better if it's Democrats in control.

  • Justice Department accuses Visa of debit network monopoly that impacts price of 'nearly everything’
  • Yeah, you can think of it as a simple transaction fee for debit transactions, and a full blown credit and risk shifting system for credit transactions. The banks charge high fees for credit transactions because they're actually lending money and bearing some credit risk for them, whereas the debit transactions are just moving money from one account to another.

  • Justice Department accuses Visa of debit network monopoly that impacts price of 'nearly everything’
  • This stuff takes a while to get going.

    The FTC sued to stop Microsoft from acquiring Activision in December 2022, but lost.

    DOJ sued Google in January 2023, and won their trial last month.

    The FTC and DOJ started rulemaking on new merger disclosure and review requirements in June 2023.

    The FTC sued Amazon in September 2023.

    DOJ sued Ticketmaster/Live Nation in May 2024.

    The last two years have shown aggressive antitrust enforcement for the first time in about 50 years, when Robert Bork basically convinced the Supreme Court and all Republicans to impose almost impossible standards for antitrust regulations.

  • Star jelly
  • Observations made of star jelly in Scotland support the theory that one origin of star jelly is spawn jelly from frogs or toads, which has been vomited up by amphibian-eating creatures.[15] The German terms Sternenrotz (star snot) and Meteorgallerte (meteorite jelly) are known to refer to more or less digested frog spawn vomited by predators (Schlüpmann 2007).

    Yeah I'm not trying it

  • In a First, Young Men Are More Religious Than Young Women
  • I think this article misleadingly states what the stats show.

    Each American generation is less religious than the older generations, and Gen Z is no different. It's just that Gen Z women are far less religious than previous generations, a bigger gap than the men. From the study that provides the underlying stats:

    What’s remarkable is how much larger the generational differences are among women than men. Gen Z men are only 11-points more religiously unaffiliated than Baby Boomer men, but the gap among women is almost two and a half times as large. Thirty-nine percent of Gen Z women are unaffiliated compared to only 14 percent of Baby Boomer women.

    In other words, Gen Z men are less religious than Boomer men. This basic conclusion doesn't seem to come through in the original article, which almost suggests that young men are more religious than older generations.

  • Elon Musk destroys astronomy
  • It's a complete non-issue for starlink-sized objects at that altitude.

    Yeah. The mass and altitude are too low.

    The thing with Kessler Syndrome is that collisions create debris, which cascades with more collisions, until there's too much debris. But each collision actually results in the loss of kinetic energy or gravitational potential energy overall, so that the subsequent pieces are less energetic and/or less massive. Start with enough mass and enough altitude, and you've got a real problem where it can cascade many, many times. But with smaller objects at low altitude, and there's just not enough energy to cause a runaway reaction.

  • World now has five times more photovoltaics than nuclear power
  • The kinetic energy in that stardust, and the gravitational potential energy of stardust pulling itself into tighter balls, doesn't necessarily come from fusion. There's all sorts of cosmological forces and energy out there, and I don't think they all trace back to nucleii smushing together.

  • Jill Stein Is Killing the Green Party
  • Nader 2004: 465,650

    Nader wasn't even the Green candidate in 2004. Nader ran as an independent in 2004.

    That year the Green Party ran David Cobb, who got 119,859 votes, putting him behind the Constitution Party, the Libertarian Party, and the independent Ralph Nader.

    In 2008, Nader ran again as an independent and beat the Green Party once again, with 739,034 votes, versus McKinney's 162k. In between were the Libertarians in fourth place, and the Constitution Party in fifth place.

    The Green Party has never even come in third place, and several times hasn't even come in fifth place, in our two party system.

  • Starlink v2 satelites will ruin science.
  • The geosynchronous satellites are about 650 times higher than Starlink satellites, so the speed of light is a significant limiting factor.

    Geosynchronous orbit is 35,700 km (3.57 x 10^7 m) above sea level. At that distance, signals moving at the speed of light (3.0 x 10^8 m/s) take about .12 seconds to go that far. So a round trip is about .240 seconds or 240 milliseconds added to the ping.

    Starlink orbits at an altitude of 550 km (5.5 x 10^5 m), where the signal can travel between ground and satellite in about 0.0018 seconds, for 3.6 millisecond round trip. Actual routing and processing of signals, especially relaying between satellites, adds time to the processing.

    But no matter how much better the signal processing can get, the speed of light accounts for about a 200-230 millisecond difference at the difference in altitudes.

  • Amazon should've made Prime Day fall on a date corresponding to an actual three-digit prime number.

    Amazon is running a Prime Day sale on July 16 and 17. Setting aside the fact that this is two separate days, neither 716 nor 717 are prime numbers. They should've done 7/19 instead.

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    booly @sh.itjust.works
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