Recent comments in /f/askscience

abeinszweidrei t1_j6sg22l wrote

Reply to comment by Negative-Relative402 in Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science by AutoModerator

I think you're confusing anti matter with dark matter.

But for dark matter you're pretty much right. For example, we can see things orbiting with some speed and can deduce the mass needed for such an orbit. The mass of stuff we see is mich smaller than the needed mass, so apparently there is some stuff that is "dark", i.e. doesn't shine or reflect light, also doesn't absorb. More like glass in this respect, or air. The light just doesn't care about it being present. So physicists started calling it "dark matter" as it doesn't shine, plus it fits well with the fact that we don't know yet what it is.

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keyboardstatic t1_j6sennb wrote

Reply to Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science by AutoModerator

With dating the age of old human places like the Egyptian pyramids is it possible that they are older? Or that they can't be easily dated due to a lack of what they need to find to date?

What are your thoughts on the ability of the simple tools found. To produce the stone artefacts and stone work found in Egypt?

What are your thoughts on civilisation being older then we currently think?

By civilisation I mean organised city states.

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Skiracer6 t1_j6sbfvs wrote

Reply to Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science by AutoModerator

Earth science: What happens when a divergent plate boundary, such as a mid-ocean ridge, gets subducted beneath a continental plate?

I believe this has happened in the past with the Farallon plate undergoing subduction with the North American plate, with the Juan de Fuca plate being all that remains of the Farallon.

How does this affect subduction based volcanism related to the subduction zone?

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Zealousideal-Hunt343 t1_j6pbden wrote

Reply to AskScience AMA Series: I'm Birgül Akolpoglu, a doctoral researcher at the Max Planck Institute for Intelligent Systems in Germany. I work on microalgae and bacteria-based microrobots that could one day be used to deliver drugs and battle cancer! AMA! by AskScienceModerator

Hi , Amazing work!
Just wanna share some of our research on controlling the spatial variance of such microbots. We propose a light weight motion primitive based control method for aggregation of a swarm using global magnetic input. hope you find this interesting.

https://link.springer.com/article/10.1007/s11370-022-00421-x

Hi, Amazing work!
Just wanna share some of our research on controlling the spatial variance of such microbots. We propose a lightweight motion primitive-based control method for the aggregation of a swarm using global magnetic input. Hope you find this interesting.

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Brockelley t1_j6p2bu3 wrote

Reply to AskScience AMA Series: I'm Birgül Akolpoglu, a doctoral researcher at the Max Planck Institute for Intelligent Systems in Germany. I work on microalgae and bacteria-based microrobots that could one day be used to deliver drugs and battle cancer! AMA! by AskScienceModerator

microbots vs Ideonella sakaiensis (the bacteria that eat plastic)

Which will win the race in cleaning our waters and lowering the number of microplastics on the planet?

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amigo-vibora t1_j6ozmfe wrote

Reply to AskScience AMA Series: I'm Birgül Akolpoglu, a doctoral researcher at the Max Planck Institute for Intelligent Systems in Germany. I work on microalgae and bacteria-based microrobots that could one day be used to deliver drugs and battle cancer! AMA! by AskScienceModerator

when can such a treatment become a reality to fight cancer? are we talking decades? is affordability ever contemplated in these type of research?

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red75prime t1_j6oyhjp wrote

Reply to comment by djublonskopf in Do furry pet owners experience respiratory problems at a higher rate than non-pet owners, due to hair/dander in the home? by Articulated

> and that those symptoms persist at a higher rate than experienced by non-animal-owners even if the household goes animal-free.

Is it a causal link? Or is it because non-animal-owners are a mix of people with and without respiratory issues at approximately population-average proportion and people who'd gone animal-free are more likely to have pre-existing respiratory issues?

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