12

Disclaimer: I know enough about astronomy to know that I know pretty much nothing.

As dark energy was explained to me, it is a placeholder in the equation(s) for measuring the expansion of the universe. Rephrasing, we know the universe is expanding but we can't account for some amount of the force involved.

I hope I am making sense and I am not too far out in the weeds.

To my question: all of the stars are blasting out not just photons but also substantial amounts of physical matter in various states (gas, plasma, solid) that also includes material from the various objects in the solar system (eg atoms of water from mars). Wouldn't that mixture of massless photons and physical material have some significant influence on everything else?

you are viewing a single comment's thread
view the rest of the comments
[-] cecilkorik@lemmy.ca 0 points 1 day ago

Yeah it is sort of like a physics in-joke, it doesn't really mean that anyone believes there is actual matter or energy that we would recognize sneaking around right under our noses, there's no obvious explanation for it, it makes the math work the way we expect but it doesn't seem to really be there. But it's sort of fun to ironically pretend it is a familiar and practical physical phenomenon, and for lack of a better explanation why not run with it, but that doesn't mean it IS the explanation. It's sort of like how you might pretend your car has feelings. You know everything about it that tells you it actually doesn't, there's no actual sign of it at all. You might be able to make it fit the facts from time to time, but it doesn't mean you're going to make sure to go ask how your car is doing after every major life event. It's fun, it's harmless, but it's not real.

[-] LurkingLuddite@piefed.social 1 points 2 hours ago* (last edited 2 hours ago)

Nope, wrong. Dark matter is LITERALLY modeled as matter we cannot detect.

... how... do you think science works?? We get EVERY sign of matter, call it Dark Matter, yet have no basis for saying yes it's actual mass out there?!

You are a fool if you think science does not say Dark Matter has mass...

this post was submitted on 18 Jul 2026
12 points (87.5% liked)

Ask Science

17174 readers
59 users here now

Ask a science question, get a science answer.


Community Rules


Rule 1: Be respectful and inclusive.Treat others with respect, and maintain a positive atmosphere.


Rule 2: No harassment, hate speech, bigotry, or trolling.Avoid any form of harassment, hate speech, bigotry, or offensive behavior.


Rule 3: Engage in constructive discussions.Contribute to meaningful and constructive discussions that enhance scientific understanding.


Rule 4: No AI-generated answers.Strictly prohibit the use of AI-generated answers. Providing answers generated by AI systems is not allowed and may result in a ban.


Rule 5: Follow guidelines and moderators' instructions.Adhere to community guidelines and comply with instructions given by moderators.


Rule 6: Use appropriate language and tone.Communicate using suitable language and maintain a professional and respectful tone.


Rule 7: Report violations.Report any violations of the community rules to the moderators for appropriate action.


Rule 8: Foster a continuous learning environment.Encourage a continuous learning environment where members can share knowledge and engage in scientific discussions.


Rule 9: Source required for answers.Provide credible sources for answers. Failure to include a source may result in the removal of the answer to ensure information reliability.


By adhering to these rules, we create a welcoming and informative environment where science-related questions receive accurate and credible answers. Thank you for your cooperation in making the Ask Science community a valuable resource for scientific knowledge.

We retain the discretion to modify the rules as we deem necessary.

For answers to historical questions, please check out our sister community: !askhistorians@lemmy.world


founded 3 years ago
MODERATORS