Recent comments in /f/space
tabletop_guy t1_jd8pfyh wrote
With some clever tweets they could probably sell it to Elon Musk for more money than it's worth
Riptide360 t1_jd8pb3b wrote
Reply to comment by bookers555 in Industry sees missed opportunity in deorbiting ISS by ye_olde_astronaut
Low earth orbit is where all the action is at. Boosting to a higher orbit means physically more space and increased time to react.
bookers555 t1_jd8ourc wrote
Reply to comment by Riptide360 in Industry sees missed opportunity in deorbiting ISS by ye_olde_astronaut
It would if there wasn't the risk of a dead satellite crashing into the ISS and turning it into a massive cloud of space trash.
QuietGanache t1_jd8opve wrote
Reply to comment by tms102 in Virgin Orbit raising $200 million from investor Matthew Brown, closing deal as soon as Thursday by cnbc_official
It strikes me as a solution in need of a problem. The cost to orbit is almost 30x per kg of that offered by Spacex. The supposed selling point is that the relatively small throw weight offers mid-size customers the orbital parameters of their choosing (taxi vs bus) but it's hard to imagine who would find that worth the added cost.
b_a_t_m_4_n t1_jd8n5r0 wrote
The nearest star Proxima Centauri is about 2687070au from us. The Solar system is 1921.56au in diameter. So 139.87x is the conversion factor. If the solar system was a 6.8cm tennis ball then Proxima would be about 9.5 meters away.
Anonymous-USA t1_jd8mvra wrote
Reply to comment by Express_Artichoke383 in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
Intelligent/advanced life is entirely different than intelligent design. We have proof of the former in ourselves, and it’s a testable theory even if we haven’t found any signs yet in the vastness of space. The latter — intelligent design — is faith and not a field of scientific study.
[deleted] t1_jd8mrv8 wrote
syentifiq t1_jd8mmnt wrote
Using a tennis ball to represent the heliosphere, I get proxima centauri at about 18 km and the nearest Galaxy at a bit less than half the current distance to the moon. Can someone check this?
[deleted] t1_jd8lwj5 wrote
Vernerator t1_jd8lu1y wrote
If I did the math correctly, with your Earth equals a tennis ball. Earth equals about 7900 miles dia. A tennis ball equals about 2.5 inches. Proxima Centauri is 2.53xE13 miles away.
With the conversions, another tennis ball would have to be placed 126,363 miles away from the first.
JoshuaACNewman t1_jd8l9l0 wrote
Reply to comment by BeepBlipBlapBloop in Trying to understand the scale of the visible universe. by 00Askingquestions00
That makes Earth somewhere around the size of the ball of a ballpoint pen.
BeepBlipBlapBloop t1_jd8kt9k wrote
If the sun were the size of a pea the distance to the edge of the solar system would be within the length of a football field and Proxima Centauri would be 225 miles away.
reddit455 t1_jd8kodw wrote
>But scaling it down and using a tennis ball or a marble to represent either earth or the solar system could it be possible?
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it is not possible to print a picture of the solar system to scale.
either the distances are too big, or the planets are too small.
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On a dry lakebed in Nevada, a group of friends build the first scale model of the solar system with complete planetary orbits: a true illustration of our place in the universe.
https://en.wikipedia.org/wiki/Sweden_Solar_System
The Sweden Solar System is the world's largest permanent scale model of the Solar System.
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Cycle the Solar System
https://www.york.ac.uk/physics-engineering-technology/outreach/astrocampus/cycle-solar-system/
The York Solar System model is a scale model of the Solar System, spread out along 6.4 miles (10km) of the old East Coast mainline railway. Along it you can find scale models of all the planets in our solar system as well as models of the Cassini and Voyager spacecraft.
Majestic_Pitch_1803 t1_jd8k6n4 wrote
Reply to comment by Postnificent in Couldn’t we land on an asteroid that is passing through our solar system and use that as a vessel for interstellar travel? by [deleted]
No, I’m not suggesting you need to keep accelerating. The speed aspect is only one reason you might want to save on the fuel you take, how do you plan on slowing down? If you could somehow mine the asteroid for fuel, this may be a possible solution.
You could also send smaller payloads that all reach the ship more easily and coalesce to fully establish sensory instruments and research stations. Rather than trying to get one heavy ship to a high speed and then somehow slowing it down.
Express_Artichoke383 t1_jd8iwen wrote
Reply to comment by Anonymous-USA in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
Honestly though do you ever wonder why there are SO FUCKING MANY pointless stars and planets? Seems weird if this was all “intelligently” designed.
Express_Artichoke383 t1_jd8i8wf wrote
Reply to comment by NerfSchlerfen in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
True but the time our little brains have been able to potentially detect something is a tiny sliver of the history of the university right?
75MillionYearsAgo t1_jd8huam wrote
Reply to comment by boundegar in Research team finds indirect evidence for existence of dark matter surrounding black holes by karmagheden
No idea. Universe is wierd as hell though so i’m sure its possible. I mean we don’t even know why gravity happens, we just know how it works. Maybe smth similar with the friction thing.
SaltyDangerHands t1_jd8f7q4 wrote
Reply to comment by NotMalaysiaRichard in Is there another massive planet beyond Neptune? If so, why haven’t we found it? by Always2ndB3ST
I mean, it's not my theory, I'm most certainly not an astrophysicist either, so it could well be a primordial one, sure. I think the documentary in which I saw it mentioned, and I couldn't tell you the name, they're my background noise, the idea that it was captured as opposed to native to our solar system.
dusty545 t1_jd8ejbd wrote
"Small companies that do not have the financial backing to scale up see missed opportunity for US taxpayers to subsidize their studies and development"
[deleted] t1_jd8ehff wrote
[deleted]
reddit455 t1_jd8c996 wrote
>For some in industry, though, spending as much as $1 billion to bring down the station sends the wrong message and is also a missed opportunity to instead repurpose elements of the station, recycling material that could be used for other commercial applications.
exposed to temperature extremes, radiation and pressure for decades.
how do you assess fatigue?
Postnificent t1_jd8btwx wrote
Reply to Couldn’t we land on an asteroid that is passing through our solar system and use that as a vessel for interstellar travel? by [deleted]
OP doesn’t understand the absence of resistance in space.
Riptide360 t1_jd8bmjd wrote
Moving the structure to higher orbit and making it a tourist space museum spot would be a better use.
cbusalex t1_jd88zh4 wrote
Reply to comment by MesaBit in Japanese lander enters lunar orbit by Afrin_Drip
There are actually a lot of moon landings scheduled for this year:
FridgeBaron t1_jd8pv96 wrote
Reply to Trying to understand the scale of the visible universe. by 00Askingquestions00
its not exactly what you were asking for but reminded me of this
https://joshworth.com/dev/pixelspace/pixelspace_solarsystem.html
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It does an ok job of the magnitudes involved in just our solar system.