Recent comments in /f/space
No-Zucchini2787 t1_jcw2ynw wrote
Reply to What is this exactly? I have seen this universe image a lot and never understood what it actually is by subatomicslim
It's zone of avoidance. This is the dense part of our galaxy including the black hole etc. Visible light in this area is adsorbed by galactic centre and dust. Not a good area for visible light photography and hubble. At the same time it's paradise for Gaia, jwst, Spitzer etc, basically any nom-visible light telescope.
Valuable-Extreme t1_jcw2ibn wrote
Reply to comment by jafinn in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
Don’t forget the radius… It is roughly 50 or 60 ly as early radio transmissions were to weak to get far enough without being weaker than background noise… Therefore we can only assume there is no intelligent life in a radius of 25 to 30 ly as they could have answered by now. That is just a super small area of space… We can only listen to them at this point…
ledfrisby t1_jcw21ew wrote
Reply to Moon and Mars by theillini19
Little known fact: the Moon is actually much smaller than Mars. It just looks bigger because it's so much closer. This is known as an optical illusion.
~The more you know~
ZealousidealClub4119 OP t1_jcw1a0g wrote
Reply to comment by mikebug in A Brief History of Time is ‘wrong’, Stephen Hawking told collaborator | Stephen Hawking by ZealousidealClub4119
No, because it isn't.
We can currently detect time dilation due to different strengths of gravitational field experienced by two 'atomic clocks', separated by a vertical distance of one metre.
Sargatanus t1_jcw0maq wrote
Reply to comment by Only_Interaction8192 in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
Two species that were so closely related that interbreeding was possible, and archaeological evidence suggests that Neanderthals copied the tools and practices of Homo sapiens rather than creating their own, so I don’t think that quite counts, but I digress. If a species of dinosaur or therapsid had built cities and spaceships (which would be cool, but there’s no evidence for that) then that would be a different story.
Professional-Owl2488 t1_jcw0ggu wrote
Reply to The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
I think it's a mix of everything, life is likely very common, intelligent life like humans is likely very rare.
Mass extinction events happen every so many tens of millions of years so we have a limited time to advance our technology to the point where we are immune to it happening to us.
I am surprised humans haven't destroyed ourselves yet considering nuclear weapons, bioweapons and other WMD's exist.
Our technology is good but is it good enough to detect life on another planet?
The universe is unimaginably big and the distances between civilizations may be too great. I feel like our technology is only good enough to detect alien civilizations if the alien civilizations sends us a direct message with powerful equipment aimed right at us.
We haven't really been looking that long, maybe messages have already gone by. Maybe we aren't interesting enough to send messages to, maybe it's not wise to call out to darkness.
I think there are plenty of great reasons why we haven't directed alien life yet, but I am 100% confident it's out there. There are trillions of galaxies and each galaxy has hundreds of billions to trillions of stars, I just doubt we are that lucky to be the only planet with life.
mikebug t1_jcvzwmb wrote
Reply to A Brief History of Time is ‘wrong’, Stephen Hawking told collaborator | Stephen Hawking by ZealousidealClub4119
just wondering - can we show that the passage of time has always been consistent?
theillini19 OP t1_jcvzlvp wrote
Reply to Moon and Mars by theillini19
My favorite picture I captured during the Moon/Mars occultation of December 2022. Captured with an Orion Skyquest XT8 8 inch Dobsonian and Nikon 1 J1 mirrorless camera.
Only_Interaction8192 t1_jcvzi5z wrote
Reply to comment by Sargatanus in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
I think your point is very much a possibility, BUT why do you think intelligent life is rare? Even on Earth humans were not the only intelligent humanoid species. Neanderthal was believed to have been as intelligent as humans. So if intelligence has happened at least twice just on this planet, I don't think it's a stretch to believe it's happened elsewhere.
wdd09 OP t1_jcvxgfx wrote
Reply to The Big Dipper over a Florida Beach by wdd09
The Big Dipper as photographed over a palm tree on a Florida Beach. This was at Wakulla Beach in the St Marks Wildlife Refuge.
Sony a7iii and Viltrox 20mm f/1.8 lens.
mrgreenw t1_jcvvh1a wrote
Reply to comment by AlbaneseGummies327 in Fallen Astronaut statue and a name plaque left on the surface of the Moon by the crew of Apollo 15 by AlbaneseGummies327
Elon launched a Tesla into space if that counts
rluzz001 t1_jcvv9sp wrote
Reply to comment by EduardoVrd in Untracked Milky Way on southern hemisphere skies by EduardoVrd
Silly question. I have almost the exact same set up. Do you have to move the position of the camera at all through out shooting or is this just from one position ? Beautiful picture.
Adeldor t1_jcvv9kj wrote
Reply to comment by crepesballsoffire in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
Unlike heavier-than-air flight, this isn't in the category of a technical problem yet to be solved. It's more along the lines of not being able to reach temperatures below absolute zero.
By all understanding, FTL travel between two points in space appears to be impossible even when attempting to bypass direct FTL travel through that space via wormholes or Alcubierre drives. Alcubierre himself has doubts regarding his drive, indicating it has the potential to violate causality, a point supported by Prof. Allen Everett. Such violation is anathema to most cosmologists and physicists.
In other words, the speed of light is set not by light itself, but by causality. It is deeply fundamental to the nature of the universe. Even were FTL travel possible, it'd only be through phenomena such as multiple forking universal timelines, that is, one way trips out of "our" universe.
Meanwhile, beyond this somewhat dated paper (PDF) refuting White and Juday's claims, I couldn't find any refereed papers or sources for their interferometer. Have you one to provide?
subatomicslim OP t1_jcvueve wrote
Reply to What is this exactly? I have seen this universe image a lot and never understood what it actually is by subatomicslim
Im trying to find similar images online, i have seen this in many youtube videos but I really cannot find anything close to this so there must be a certain name or something for images of the universe like this? With like a 3d 3 way intersection
[deleted] t1_jcvt3op wrote
Reply to Moon Shadow Over Jupiter by Photon_Pharmer
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subatomicslim OP t1_jcvsy0q wrote
Reply to comment by Antimutt in What is this exactly? I have seen this universe image a lot and never understood what it actually is by subatomicslim
Oh gotcha, so its like a map but the missing bits is where our galaxy is the the way?
Antimutt t1_jcvssm8 wrote
Reply to What is this exactly? I have seen this universe image a lot and never understood what it actually is by subatomicslim
It's the zone of avoidance, where the disc of our galaxy hides more distant objects.
Theometer1 t1_jcvsrdd wrote
Reply to comment by Nerull in A Mind-Bending Experience of Space-Time by Themysticaldimension
I looked into there profile a bit, self proclaimed “witch”. Probably a fabricated story to make them sound interesting and get people to follow them.
[deleted] t1_jcvspzu wrote
Reply to comment by Moist-Cut-7998 in Fallen Astronaut statue and a name plaque left on the surface of the Moon by the crew of Apollo 15 by AlbaneseGummies327
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d4rk_fusion t1_jcvsfx6 wrote
Reply to Containing an incredible half-million stars, this 8-billion-year-old cosmic bauble is one of the largest and brightest globular clusters ever discovered. Credits: ESA/Hubble by Davicho77
Does someone count that shit or do they just set up a computer to count every dot
Anonymous-USA t1_jcvs26a wrote
Reply to The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
The conclusion that there should be plentiful intelligent life is based upon probability of large numbers. Even if there were a trillion planets with intelligent life in our observable universe, that’s still less than one planet per galaxy. And there are about 100M stars in a galaxy (1T in Andromeda!), and dozens or more planets around most stars. So I don’t see the paradox. Advanced life is obviously incredibly sparse, and if there is one in the Andromeda galaxy, that’s still 2.5M light years away. Homo sapiens weren’t even around when the light we see from it today left that galaxy.
ergzay t1_jcvs0yx wrote
Reply to comment by Due_Menu_893 in Fallen Astronaut statue and a name plaque left on the surface of the Moon by the crew of Apollo 15 by AlbaneseGummies327
Note: This was placed as a private agreement between the artist and the astronauts and then later tried to claim that the agreement was different than what the astronauts claimed and he tried to later profit off of it and sell 950 copies of the statue.
From wikipedia:
> The crew kept the memorial's existence a secret until after completion of their mission. After public disclosure, the National Air and Space Museum requested a replica of the statue. Controversy soon followed, as Van Hoeydonck claimed a different understanding of the agreement made with the astronauts and attempted to sell up to 950 copies of the statue. He finally relented under pressure from NASA, which had a strict policy against commercial exploitation of the US government space program.
Theometer1 t1_jcvrkt1 wrote
Go see a doctor, sounds like a neurological issue. Do you have epilepsy by any chance?
Outside-Ice-1400 t1_jcvqvas wrote
Reply to comment by [deleted] in The Fermi Paradox and the Possibility of Intelligent Extraterrestrial Life by Beginning-Court1946
I like your theory. And if true, I find it entirely likely that the larger organism wouldn't have any idea that its sub-organisms were conscious - or perhaps that they even exist at all. The sub-organism environments might just be too damn small - like sub-particle small.
Then again I'm just riffing and have no idea what the hell I'm talking about.
subatomicslim OP t1_jcw32lf wrote
Reply to comment by No-Zucchini2787 in What is this exactly? I have seen this universe image a lot and never understood what it actually is by subatomicslim
What would I type into google to find this image