astronomy

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fallowseed, w Euclid reveals an Einstein ring around a nearby galaxy

‘nearby’ … speaking of relativity.

Greyghoster, w NASA Ordered to Remove Anything About 'Women in Leadership' From Its Websites: Report

The sad thing is that this was all telegraphed and baked into the platform. If people are kicking themselves now, it’s too late.

anindefinitearticle, w NASA Ordered to Remove Anything About 'Women in Leadership' From Its Websites: Report

Prior to Trump’s orders, NASA was named as one of the best employees in the U.S. for diversity in 2023. NASA’s workforce is composed of approximately 35% women and 30% minorities, according to a 2021 report by NASA’s Office of Inspector General. Still, the agency had more work to do to improve inclusion amongst its workforce. A 2024 report concluded that “despite support from Agency leaders and multiple initiatives to increase diversity, we found NASA has made little progress in increasing the representation of women and minorities in its civilian workforce or leadership ranks,” NASA’s Office of Inspector General wrote. “Specifically, over the past decade NASA’s overall workforce demographics have stayed roughly the same, with small increases (1 or 2 percent) for some groups.”

After decades of improvement, our strategies were stalling and starting to either hit diminishing returns or backfire. Instead of reflecting and listening and learning how to bridge the final gaps, we are going to forget and eliminate all progress made so we have to do it again and start from scratch.

Eyekaytee,
@Eyekaytee@aussie.zone avatar

Those numbers are interesting but what is the result of this? eg. because NASA has approximately 35% women and 30% minorities, it has what level of increased productivity? what has actually come out of this?

anindefinitearticle,

New perspectives and ideas and life experiences to draw from when a creative solution is needed. Diversity of experience yields creative solution-space possibilities. The more diverse your input space, the more potentially diverse your output space, depending on the function.

NASA is an organization whose activities push the boundaries of possible future technologies. We need people from all parts of society dreaming of and contributing to the future if we want a future society that is considerate of the needs of all parts of society. NASA’s wonder changes the world. The more people who are different and who are wondering in different directions, the more possibilities can unfold for the future.

Maybe short-term productivity benefits from a monoculture of people who are currently “the best” and all know how to work together seamlessly because they come from the same culture. Such a monoculture will not be adaptable as the landscape of technology changes the metrics by which “the best” get measured. It will not have the diverse foundation required for creative solutions. Being adaptable to a changing world requires creative solutions. Diversity is an investment of current productivity into future resilience. Diversity is extending the promise of contributing to grand societal projects like space travel to anyone who is capable. Diversity is building a future that can support all of us.

atro_city, w Astronomers seek global ban on space advertising

We won't stop polluting until the world is unlivable. Gotta love humanity.

oce, w A NASA astronaut may have just taken the best photo from space—ever
@oce@jlai.lu avatar
lemming, w Dark Matter Black Holes Could Fly through the Solar System Once a Decade

I thought these were disproved by lack of gravitational microlensing?

InvertedParallax,

The main way you’d see that kind of microlensing is if they aggregated.

But given the way gravity works, they should aggregate, otherwise why call them black holes?

Classy,

If they were relatively evenly distributed would that counteract lensing?

InvertedParallax,

Yes, it would just be surprising because, gravity should make them not be evenly distributed.

The whole thing with dark matter is that it’s this magic stuff that causes gravity but isn’t affected by it, which… is not how gravity normally works.

Though there is still room for it, we just need a better framework other than “I added 3 and 5 and got 12, so obviously I must mean to add 3 and 5 and 4 too”.

MartianSands,

You’re mistaken. Dark matter, whatever it is, isn’t affected by anything except gravity. It interacts with gravity just like “normal” matter.

The evidence is also significantly better than you’re describing

InvertedParallax,

Then it should also coelescce, particularly since it doesn’t have the em force to keep it repelled, the universe should be dominated by massive dark matter black holes.

Yes, there’s math that explains part of the distribution, but also there is 0 force opposing any collapse we’d have a lot more neutron stars and other degenerate matter catalyzed by dark matter.

We have hypotheses like this when our observations don’t make sense and we need to explain them, it’s definitely a possibility but we still have room to understand the large scale physics at play.

MartianSands,

You don’t need a force to prevent collapse if there’s no drag force to slow things down. It would actually be almost impossible for a cloud of dark matter to collapse since any individual particle has momentum and no way to slow down, so they’ll all be in some sort of mutual orbit

InvertedParallax,

I’m guessing you’ve seen as many lorentz attractor simulations as I have, what always happens is something like tidal effects or angular momentum means 90% slow down while a few particles get shot out of hell at ludicrous speed.

The effect is similar to drag, and is basically how we get entropy even without em effects.

PennyRoyal, w Starlink is increasingly interfering with astronomy, scientists say

It’s not the only problem with them, and potentially not the biggest either - there is no plan to remove or maintain them when they die other than de-orbiting them into the upper atmosphere. A recent study suggests that this will critically harm the ozone layer, and that adding metallic particles in the quantities implied by the number of starlink satellites that Elmo plans to launch could do far more damage to the ozone layer than our previous attempts to screw it up!

Article - sciencealert.com/satellites-like-starlink-could-p…

Study - agupubs.onlinelibrary.wiley.com/…/2024GL109280

threelonmusketeers,

Yeah, aluminium oxide particles may be a problem. Some scientists are experimenting with replacing aluminium with wood. I wonder if this would be feasible on future Starlink sats.

Thordros, w Elon Musk destroys astronomy
@Thordros@hexbear.net avatar

Still love the truck tho

featured,

Lmao

Zier, w Size Comparison: Pluto and Australia
@Zier@fedia.io avatar

As a former Plutonian, I can confirm it's small, that's why we immigrated to Earth. And fucking cold!

samus12345,
@samus12345@lemmy.world avatar
Zier,
@Zier@fedia.io avatar

Stop posting pictures of my family, they are very shy!!!

nnullzz, w OP: "This is my most advance moon photograph EVER it consist of 81000 images and over 708GB of data." (see comments.)

With all the impacts the moon seems to take, is there any footage of a new crater being made? That would be super cool to see.

Feathercrown,

Here you go! First time seeing this footage myself!

youtu.be/000iTCoEE1s?si=mKO_1XCDVLYS-Yqk

I seem to recall a story about a large impact visible to Europe from Earth sometime around the renaissance as well, but I couldn’t find it.

nnullzz,

Oh wow! Thanks for sharing!

Fizz, w OP: "This is my most advance moon photograph EVER it consist of 81000 images and over 708GB of data." (see comments.)
@Fizz@lemmy.nz avatar

Fuck that looks crisp

padjakkels, w The sun's magnetic field is about to flip. Here's what to expect.
@padjakkels@lemmy.world avatar

That title is click bait

Marin_Rider, w Voyager 1 contact restored

finally some good news!

will_a113, w Advanced solar sail mission prepares to catch the wind in the void of space

The interesting part of the article:

The new flexible polymer and carbon composite boom is coupled with a twelve-unit (12U) CubeSat built by NanoAvionics. After the mission launches atop a Rocket Lab Electron rocket from the company’s Launch Complex 1 in Māhia, New Zealand, the spacecraft will go into a Sun-synchronous orbit at an altitude of about 600 miles (~1,000 km) and the sail will deploy in about 25 minutes to cover an area of 860 ft² (80 m²) with the boom unfolding from the size of a hand to 23 ft (7 m) long. Once deployed, the sail will adjust the vehicle’s orbit by angling itself in relation to the solar wind.

Atelopus-zeteki,
@Atelopus-zeteki@kbin.run avatar

Yar! Sailing the Solar Winds! TBH, been waiting for this since I first heard of solar sails. Yay, ingenious tool using primates!!!

lvxferre, w After 30 years, I'm finally going to see a total solar eclipse. Also, Potato World is a thing.
@lvxferre@mander.xyz avatar

Three decades, two astronomy degrees, 5 years operating a planetarium, and 5 years as a guide at the local observatory later, and I’m fully prepared.

Me, watching a total eclipse 30 years ago: “MUUUUUM! WHERE’S THE OLD CAMERA FILM? I WANT TO MAKE ECLIPSE GLASSES!” Then I was fully prepared!

It was exciting. (I hope that those folks in MX/US/CA have fun.)

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