NASA’s Quiet Supersonic Jet Is Ready for Its Biggest Test Yet | The X-59 is preparing to fly faster than the speed of sound for the first time.
https://gizmodo.com/nasas-quiet-supersonic-jet-is-ready-for-its-biggest-test-yet-2000766417
https://redd.it/1tuwkfm
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Clear evidence found that some supermassive black holes form without a stellar collapse
https://www.earth.com/news/clear-evidence-found-that-some-supermassive-black-holes-form-without-a-stellar-collapse/
https://redd.it/1tuqu8y
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The Trebuchet eruption as seen in the SDO AIA 304 angstrom filter.
https://svs.gsfc.nasa.gov/14126/?hl=en-IN#media_group_314973
https://redd.it/1tulfuv
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China conducts surprise launch of Long March 12B, delivers Qianfan satellites on debut flight
https://spacenews.com/china-conducts-surprise-launch-of-long-march-12b-delivers-qianfan-satellites-on-debut-flight/
https://redd.it/1tuebiy
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Blue Origin launchpad damaged in rocket explosion may not be restored until 2028, NASA's Isaacman says
https://www.cnbc.com/2026/06/01/blue-origin-launchpad-may-not-be-restored-until-2028-nasas-isaacman.html
https://redd.it/1tudob3
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The Search for Extraterrestrial Life May Be Flawed
https://time.com/article/2026/06/01/scientists-overlooking-signs-of-extraterrestrial-life-study/?utm_source=reddit&utm_medium=social&utm_campaign=editorial
https://redd.it/1tu4k2h
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Amazon's satellite internet chief addresses Blue Origin explosion: Read the memo
https://www.businessinsider.com/amazon-blue-origin-rocket-explosion-memo-leo-starlink-spacex-2026-6?utm_source=reddit&utm_medium=social&utm_campaign=insider-space-sub-post
https://redd.it/1ttyt54
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New high res satellite imagery showing the damage to LC-36 by New Glenn's May 28 explosion with a before and after comparison
https://x.com/soaratlas/status/2061288973209878718
https://redd.it/1ttqdnw
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Planet Mass and composition allocation determined entirely by AU, Stellar Mass, Stellar Rotation and Disc mass
I posted a link to my model but I didn't explain what it was, how it worked, or what it did, and I realize I left people just confused, so I will explain:
First here is my github with all of my source code: https://github.com/jamesgdahl/HYDROS-Planet-Formation-Model
All declared variables:
Z 0.014 Solar metallicity
f rock 0.22 Rocky fraction of condensables (Lodders 2003)
f ice/rock 3.5 Ice/rock ratio past full condensation
M ⊕ thresh 3.0 Core mass for gas accretion onset
ϵ pebble 0.40 Pebble capture efficiency (Lambrechts)
η rock 0.78 Rock retention (Mulders pebble drift loss)
A 0 58 H/He envelope amplification at t form = 0
k H/He 0.684 H/He decay rate (per Myr)
t disc 5 Myr Disc dispersal time at Sol disc-mass
M ⊙ / M ⊕ 332946 Solar mass in Earth masses
On formation of a stellar system like ours, the accretion disc is governed primarily by viscosity and torque being the primary drivers of mass dynamics. This disc is bounded on its inner and outer edges.
The inner edge, the Alven radius, is calculated:
RA=0.20⋅M⋆M⊙,prim⋅Ω4/7 AU
The outer edge is also determined by the same forces
Rdisc=30⋅M⋆M⊙,prim⋅Ω−1/2 AU
The inner edge, in a normal system, is the main backstop of mass accretion potential, providing a baseline, as the inhibition of viscous flow from the Alven radius backstop increases the overall accretion potential of the entire rest of the disc. In highly compressed systems, the outer edge is not a "dead zone" as it is in our system (and there is a very slight backstop at our outer edge, it is not in fact dead) which also increases the "ambient" accretion potential of the rest of the disc.
Disc compression is calculated:
C=RA/Rdisc
This can result in an inverted system if spin is extreme enough, with the outer line being pushed below the inner line, resulting in the radial mass accretion potential from all outer radii compressed into the innermost parts of the solar disc.
This establishes a linear and uniform accretion potential that scales linearly with AU:
slope=M⋆⋅Z⋅frock⋅fdisc⋅ηrockRdisc M⊕/AU
With "slope" being the AU determined rocky accretion potential at that AU for planetary formation. This "slope" calculation then determines the rock content of any planet at a precise AU:
Mrock(r)={slope⋅[(r+0.078)−RA\]if RA≤r<2RAaintercept+slope⋅rif 2RA≤r≤Rdisc0otherwise (inner/outer void)
With intercept defined as:
aintercept=0.596⋅M⋆M⊙,prim⋅Ω2/7 M⊕
The Snow Line is determined as a property of the viscous heating of the disc, with scenarios ranging from "small grains" scenario (high viscous heating) to a "large grains" scenario (low viscous heating), Sol's observed Snow Line at 2.7 AU results in a moderate-to-low grains scenario of 0.82 between those ranges.
rsnow=[1.6+1.7,g2.2\]⋅(M⋆M⊙,prim)!2⋅fdisc0.01 AU
Within the Snow Line, the earlier stated accretion potential is the main driver of initial planetary mass, other factors being negligible. Beyond the snow line, ice can become solid and then is available for accretion:
ηice(r)=exp![−r−rsnow0.8⋅Rdisc\]
There is a pile up at the Snow Line, due to melting and re-freezing at that point
Mbump(r)=0.5⋅slope⋅rsnow⋅exp![−(r−rsnow)22⋅(0.15,rsnow)2\]
So the amount of ice accretion a planet can recieve is calculated:
Mice(r)=slope⋅(r−rsnow)⋅3.5⋅ηice(r)+Mbump(r)
Pebble accretion is available to all planets but not all benefit equally. Pebbles defined as:
Mpeb,total=fdisc⋅Z⋅(1−frock)⋅M⋆⋅ϵpebble
Per planet weight:
wi=1ri−rsnow(ri>rsnow)
With only sufficiently massive planets benefitting:
Mpeb,i=Mpeb,total⋅wi∑j∈eligiblewj
H/He defined:
A(tform)=58⋅exp![−kH/He⋅tform\]
Solar wind will not allow H/He accumulation at a defined distance
wwind(r)=11+(Ω/30)⋅(0.5/r)2
So the calculation for available H/He:
MH/He=Mcore⋅A(tform)⋅wwind
Is allocated to a defined H/He envelope:
kH/He=0.684⋅max![1,(Mdisc,SolMdisc,sys)2\]
Taken all together, a
Article: Blue Origin rocket exploded on launchpad, throwing the future of NASA’s Artemis program into question
https://theconversation.com/blue-origin-rocket-exploded-on-launchpad-throwing-the-future-of-nasas-artemis-program-into-question-284133
https://redd.it/1ttejl5
@r_space
recommendations to read
Anyone have any (non fiction) literature recommendations about space. Could be anything really explaining planets stars the universe multiverse idk. Just looking to read something
https://redd.it/1ttbeok
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Planet Modelling from just spin, mass and AU
I have created a working model that can determine the exact initial mass and composition of a planet from only mass, spin and AU.
https://jamesgdahl.github.io/HYDROS-Planet-Formation-Model/
https://redd.it/1tt1419
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Dashcam in Central New York captures video of meteor heard entering atmosphere near Boston
https://www.localsyr.com/news/local-news/dashcam-in-central-new-york-captures-video-of-meteor-heard-entering-atmosphere-near-boston/
https://redd.it/1tsuvlj
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Huge booms reported as meteor travelling at 75,000mph shakes US buildings | US News | Sky News
https://news.sky.com/story/huge-booms-reported-as-meteor-travelling-at-75-000mph-shakes-us-buildings-13549429
https://redd.it/1tslx1u
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Meteor explodes over Boston
https://www.msn.com/en-in/news/world/boston-meteor-explosion-update-experts-reveal-what-happened-in-mass-new-bolide-news/ar-AA24rTJF
https://redd.it/1tscoea
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Blue Origin has set a very aggressive return-to-flight timeline | “The propellant farm, oxygen, liquid hydrogen, and LNG tanks are all in good shape.”
https://arstechnica.com/space/2026/06/blue-origin-vows-to-fly-its-new-glenn-rocket-before-the-end-of-this-year/
https://redd.it/1tuu6zs
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Astronomers discover exoplanets with magnetic fields
https://www.yahoo.com/news/science/articles/astronomers-discover-exoplanets-magnetic-fields-090406404.html?ncid=redditnewsus
https://redd.it/1tumv4w
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On June 2, Blue Origin CEO Dave Limp stated that "We will fly again before the end of this year"
Here's his post:
https://x.com/davill/status/2061655383610114124
The key thing being that they won't need a new transport erector because they are switching to vertical integration (like Starship). So presumably they'll also be switching to vertical assembly?
"we had already been working for some time on eliminating our transporter-erector in favor of an alternative vertical conop, and we’ll now go directly to that; so we don’t need a new transporter-erector."
They still need a launch tower of course.
https://redd.it/1tuk7nh
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Article: NASA bets big on nuclear engines to cut journey times to Mars
https://theconversation.com/nasa-bets-big-on-nuclear-engines-to-cut-journey-times-to-mars-282748
https://redd.it/1tudzhp
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Surveyor 1: America’s First Lunar Landing - 60 years ago
https://www.drewexmachina.com/2016/05/30/surveyor-1-americas-first-lunar-landing/
https://redd.it/1tuc6rt
@r_space
What would happen to a human who was instantly transported (with no protection) to the surface of the moon for exactly ONE second and immediately transported back to Earth?
Maybe two humans, one to the dark side and the light side of the moon.
Would holding your breath for the trip matter?
Assuming the human lived, what would be the short and long-term effects?
Thanks for any info!
https://redd.it/1tu4tjn
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FAA documents outline SpaceX plans for Starfall reentry vehicles
https://spacenews.com/faa-documents-outline-spacex-plans-for-starfall-reentry-vehicles/
https://redd.it/1ttxoxf
@r_space
Planetary mass potential at a given AU is:
M(r)=Mrock+Mice+Mpebble+MH/He+δM
This all factors into my simulator I linked to yesterday:
https://jamesgdahl.github.io/HYDROS-Planet-Formation-Model/
https://redd.it/1tthbcw
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Article: Scientists used a method from ecology to identify whether icy moons could hold conditions for life
https://theconversation.com/scientists-used-a-method-from-ecology-to-identify-whether-icy-moons-could-hold-conditions-for-life-283855
https://redd.it/1ttekld
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I couldn’t find calming space videos, so I made my own channel
https://youtu.be/fdaZHMrEVBw?si=xUT-FevcIgfeHIri
https://redd.it/1ttdttg
@r_space
All Space Questions thread for week of May 31, 2026
Please sort comments by 'new' to find questions that would otherwise be buried.
In this thread you can ask any space related question that you may have.
Two examples of potential questions could be; "How do rockets work?", or "How do the phases of the Moon work?"
If you see a space related question posted in another subreddit or in this subreddit, then please politely link them to this thread.
​
Ask away!
https://redd.it/1tt2g1c
@r_space
The meteor that blew up over Massachusetts on Saturday was a good reminder that space is way busier than most of us think about day to day.
The thing was only about 3 feet across, basically a yard-wide rock, and it came in at roughly 75,000 mph. When it broke apart about 40 miles up near the New Hampshire border, it released energy equal to around 300 tons of TNT. A storm had the sky socked in, so almost nobody actually saw it. What people got instead was the boom, a double crack that rattled buildings from Delaware to Montreal. It fragmented high in the air, so nobody got hurt and the pieces that survived dropped harmlessly into Cape Cod Bay.
You’d think a rock 10 times bigger would hit 10 times harder, but it doesn’t work that way. Energy scales with the cube of the diameter, so 10 times wider means roughly 1,000 times more energy.
Take that 3-foot rock up to 30 feet and you’re not talking about a loud boom anymore. A stony asteroid that size coming in fast could release energy in the range of a nuclear bomb. It would probably still break up before hitting the ground, but the shockwave alone could shatter windows, damage buildings, and injure people across a wide area. We’ve already seen it. Chelyabinsk, Russia in 2013 was a roughly 60-foot rock that airburst and hurt about 1,500 people, almost all from flying glass.
Go up to 300 feet and it’s a completely different category. An object that big could release energy measured in the megatons. The exact damage depends on speed, angle, composition, and where it comes down, but a strike or low airburst over a major city could flatten much of a region. Not extinction-level, but easily one of the worst natural disasters in modern history.
The good news: events like that are rare. The better news is we’re not just sitting around hoping anymore.
NASA runs a Planetary Defense Coordination Office built specifically to find, track, and study near-Earth objects. Thousands of asteroids are monitored constantly, and astronomers tag new ones every year.
The big milestone came in 2022, when NASA’s DART mission deliberately slammed a spacecraft into an asteroid called Dimorphos and measurably changed its orbit. First time humans proved we can actually nudge one of these things off course.
For almost all of Earth’s 4.5 billion years, every living thing was completely at the mercy of whatever fell out of the sky. Now we’ve got telescopes scanning around the clock, dedicated defense programs, global monitoring networks, and a deflection method we’ve already tested in space.
Most people never even saw Saturday’s meteor through the clouds, but the boom carried across the entire region. It was a reminder that planetary defense isn’t science fiction anymore. It’s a real field now, working on one of the oldest questions we’ve got: what happens when the next rock is bigger? For the first time, we might actually have an answer. ☄️🌎🚀
https://redd.it/1tsw8bf
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Meteor explodes over United States, triggering sonic boom
https://www.dw.com/en/meteor-explodes-over-united-states-triggering-sonic-boom/a-77361548
https://redd.it/1tsndtb
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Something Just Passed Between Us and a Distant Star. - Universe Today
https://www.universetoday.com/articles/something-just-passed-between-us-and-a-distant-star
https://redd.it/1tsclt2
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NG-4 Hotfire Updates
https://www.blueorigin.com/news/ng-4-hotfire-updates
https://redd.it/1ts4ug2
@r_space
