The Space Thread

[EdamAnchorman]

2 hours ago, auxien said:

it's mostly readable and was pretty interesting in that it's such a view from far out, and sticks pretty closely to just the hugest moments and classifications.

Yeah I mean when you try to classify every single thing that exists (and maybe some that don't?) by one metric (density), you're bound to miss some things like the fact that we're (probably) not living in a black hole.

[auxien]

9 hours ago, randomsummer said:

Yeah I mean when you try to classify every single thing that exists (and maybe some that don't?) by one metric (density), you're bound to miss some things like the fact that we're (probably) not living in a black hole.

lol yeah i mean they explain why they're some criteria why the universe is NOT a black hole but it's flimsy, i still like the vibe of that idea personally. science ain't there tho so who cares about vibes lol

[auxien]

cool detailed tour of the VLT (with tour of the in-progress ELT)

Edited October 2, 2023 by auxien

[auxien]

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Poking these pebbles and rocks with sophisticated equipment here on Earth may allow Lauretta and the other scientists to answer questions about how terrestrial planets like Earth and Mars formed and possibly whether asteroids seeded Earth with the building blocks for life.

In a preliminary analysis of some of the dust, Lauretta said scientists hit the jackpot with a sample that is nearly 5 percent carbon by mass and has abundant water in the form of hydrated clay minerals. It is highly plausible that asteroids like this delivered the vast majority of the water now found in Earth's oceans, lakes, and rivers billions of years ago.

https://arstechnica.com/space/2023/10/nasa-finds-water-and-organics-in-asteroid-sample-possible-clues-to-origin-of-life/

[iococoi]

Quote

The Satellite Problem

https://skyandtelescope.org/astronomy-news/a-new-hope-taming-the-satellite-swarm-in-our-skies/

Quote

In 2019 SpaceX began deploying a constellation of internet relay satellites called Starlink. The satellites are relatively large (about 3m flat-panel bus with 8m solar array) and in low (300-550 km) orbits, and in their initial design are unexpectedly bright naked-eye objects. Various proposals filed with the FCC described constellations of 4000, 12000 and ultimately 30,000 satellites.

https://planet4589.org/astro/starsim/index.html

 

[Rubin Farr]

 

[t yst r]

"Contact binary" moon around asteroid Dinkinesh

This image shows the asteroid Dinkinesh and its satellite as seen by the Lucy Long-Range Reconnaissance Imager (L’LORRI) as NASA’s Lucy Spacecraft departed the system. From this perspective, the satellite is revealed to be a contact binary, the first time a contact binary has been seen orbiting another asteroid.

https://www.space.com/nasa-lucy-asteroid-dinky-3-space-rocks-contact-binary

[cloud capture]

nasa launched a new streaming app called nasa+

https://plus.nasa.gov/

no subscription & no ads

 

[Rubin Farr]

https://www.nasa.gov/image-article/nasas-webb-delivers-deepest-infrared-image-of-universe-yet/

[auxien]

using pulsars in our galaxy as measuring rods to track gravitational waves. super cool stuff.

[decibal cooper]

New pics of Jupiter from NASA's Juno mission:

[EdamAnchorman]

That's one sexy gas giant.

[YEK]

[ignatius]

[EdamAnchorman]

https://bigthink.com/starts-with-a-bang/singularities-dont-exist-roy-kerr/

Quote

“Singularities don’t exist,” claims black hole pioneer Roy Kerr

The brilliant mind who discovered the spacetime solution for rotating black holes claims singularities don't physically exist. Is he right?

Couldn't quite grasp everything 100% in this article, but what I could seems pretty cool.

[zazen]

It makes sense, same way you cant divide by zero

See also

https://en.wikipedia.org/wiki/Magnetospheric_eternally_collapsing_object

Quote

[Mitra] argued that all proposed black holes are instead quasi-black holes rather than exact black holes and that during the gravitational collapse to a black hole, the entire mass energy and angular momentum of the collapsing objects is radiated away before formation of exact mathematical black holes. Mitra proposes that in his formulation since a mathematical zero-mass black hole requires infinite proper time to form, continued gravitational collapse becomes eternal, and the observed black hole candidates must instead be eternally collapsing objects (ECOs).

 

[EdamAnchorman]

6 hours ago, zazen said:

It makes sense, same way you cant divide by zero

See also

https://en.wikipedia.org/wiki/Magnetospheric_eternally_collapsing_object

 

I get the jist of it and it makes sense, but they lost me when they were talking about the mathematical extensions of the Kerr space.

[decibal cooper]

Pics of Uranus from James Webb Space Telescope, lookin' good!

Seeing all of these new space pictures of planets always leaves me in awe at the special effects from Kubrick's 2001. Just seems like him and the team of effects people nailed the reality.

[MaartenVC]

New Shepard flew its 24th mission on Tuesday, December 19.

The manifest included 33 payloads and 38,000 Club for the Future postcards from students around the world.

More details about the mission can be found here:

https://www.blueorigin.com/news/new-shepard-ns-24-mission-announcement

[Rubin Farr]

https://aeon.co/essays/space-junk-could-have-a-transcendent-purposeful-afterlife

[chim]

On 12/19/2023 at 3:02 PM, decibal cooper said:

Pics of Uranus from James Webb Space Telescope, lookin' good!

Seeing all of these new space pictures of planets always leaves me in awe at the special effects from Kubrick's 2001. Just seems like him and the team of effects people nailed the reality.

That is quite impressive but I find it a slippery slope as to how "real" is it? We can already tell space photography changes wildly with the optics used, from the diffraction spikes to the multispectral sampling, and them Nasa boys love artifical coloring. The lighting in this suggests to me that it's synthesized multispectral data. The Cassini probe photos felt a bit more dull and authentic. 

[may be rude]

1 hour ago, chim said:

That is quite impressive but I find it a slippery slope as to how "real" is it? We can already tell space photography changes wildly with the optics used, from the diffraction spikes to the multispectral sampling, and them Nasa boys love artifical coloring. The lighting in this suggests to me that it's synthesized multispectral data. The Cassini probe photos felt a bit more dull and authentic. 

JWST is non-visible light

Edited December 26, 2023 by trying to be less rude

[Rubin Farr]

 

[Rubin Farr]

X-37B launch 

[Rubin Farr]