|
|
Post by perrykneeham on Sept 12, 2023 18:05:56 GMT
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 13, 2023 12:50:22 GMT
thanks! very exciting discovery. 120 light-years is virtually next door.
|
|
|
|
Post by flatandy on Sept 13, 2023 13:31:48 GMT
I think the presence of life is quite likely out there. The presence of large organisms is much less likely. The presence of "intelligent" life, much less likely yet. And the presence of intelligent life that builds technologically advanced stuff so they can fly about in space and communicate should be vanishingly rare.
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 13, 2023 14:47:04 GMT
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 13, 2023 15:11:54 GMT
why vanishingly rare? and why should life in the rest of the universe be only single cell microorganisms? doesn't evolution guarantee advancement of single to multicellular? the number of planets and moons in the detectable and undetectable universe (too far away to observe) is head spinning. then again, the rest of the universe may be totally lifeless. the only thing guaranteed is that we will never know. whatever we detect, we will always find an alternative explanation for it. Mars, for instance. we are so eager to find life there, but if we do we will write it off as contamination from earth probes or an exchange of material between the earth and mars. look how fast we wrote off the Viking lander discovery and the methane discovery.
planets and moons revolving around k-type stars would be great candidates for life more advanced than unicellular. they make up about 15% of stars in the universe. thats a lot of stars. they live much longer than stars like our sun and are much more stable than our sun. far fewer eruptions/temper tantrums. given their longer life and calmer personality, chances for advanced life to evolve in such a system would seem better than ours.
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 14, 2023 3:32:21 GMT
|
|
|
|
Post by flatandy on Sept 14, 2023 4:03:17 GMT
Because there's no obvious evolutionary reason to be technological. And because in the case of earth, we've had maybe 100 years of technology advanced enough to communicate beyond our planet during 4 billion years of life. Which would suggest one in every 40 million life-bearing planets would have technology. It absolutely doesn't. Single cellular species evolved and stayed as the sole species' for billions of years. As long as they're surviving and reproducing and not threatened, there's not necessarily a force to push to multicellular species. That is true. But most of them are incredibly distant. If one on every 40 million planets had intelligent life, which is way too high a guess, that means the closest to us are thousands of light years away. |
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 14, 2023 17:58:04 GMT
That is true. But most of them are incredibly distant. If one on every 40 million planets had intelligent life, which is way too high a guess, that means the closest to us are thousands of light years away.
fair enough. but civilizations don't have to be capable of space travel. there could be civilizations out there that range anywhere from a mesopotamia to 1700's-1800's level.
|
|
|
|
Post by flatandy on Sept 14, 2023 18:05:35 GMT
I consider that more likely. I think space aliens coming to visit us in UFOs or even talking to us by radio is deeply, deeply improbable. Not impossible, of course, but my expectation is that it we should assume it's not happening. It feels about as likely as me winning the lottery.
|
|
voice
New Member
Goals are a form of self inflicted slavery
Posts: 41,222
|
Post by voice on Sept 14, 2023 20:19:27 GMT
On that point NASA has just published it report into UAP's saying there is no evidence aliens are behind such things. NASA UAP report finds no evidence of "extraterrestrial" UFOs, but some encounters still defy explanation www.cbsnews.com/news/nasa-ufo-report-uap-study/Obviously there will always be those who insert 'aliens did it' into the space left open by 'we don't yet have an explanation'. While I love the idea of space faring aliens and other SF stuff, I have to bow to wise heads than mine and accept its just very very unlikely. |
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 15, 2023 3:56:24 GMT
U.S. Has UFOs of 'Non-Human Origin', Ex-Intelligence Officer Claimswww.newsweek.com/ufo-uap-craft-found-covered-whistleblower-claims-1804733the intelligence officer couched his words carefully. he did not claim they were of extraterrestrial origin. (which is still a possibility) he said they were technological craft of 'non-human origin.' and just because we haven't cracked the light speed restriction nut doesn't mean another sufficiently advanced civilization hasn't. in terms of space travel, we're still on the back porch of the house.
|
|
|
|
Post by flatandy on Sept 15, 2023 4:54:10 GMT
Yeah, but, you know, time dilation and lorentz contraction and so on does make superluminal travel somewhat challenging.
|
|
|
|
Post by flatandy on Sept 15, 2023 4:54:56 GMT
And "unspecified officer makes unspecified claims about UFOs" is pretty weak.
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 15, 2023 13:40:11 GMT
And "unspecified officer makes unspecified claims about UFOs" is pretty weak. i posted this stuff the beginning of june. Crashed UFOs? Bold claims from a former intelligence officerearthsky.org/human-world/crashed-ufos-whistleblower-uap/"The whistleblower, David Charles Grusch, 36, a decorated former combat officer in Afghanistan, is a veteran of the National Geospatial-Intelligence Agency (NGA) and the National Reconnaissance Office (NRO). He served as the reconnaissance office’s representative to the Unidentified Aerial Phenomena Task Force from 2019-2021. From late 2021 to July 2022, he was the NGA’s co-lead for UAP analysis and its representative to the task force."thedebrief.org/intelligence-officials-say-u-s-has-retrieved-non-human-craft/unspecified officer? hardly. unspecified claims? hardly. grusch is hardly a crank. he has a very good reputation. i know this stuff is hard to accept or digest. sometimes i wonder too. we like our perch at the top and don't want to be knocked off of it. our arrogance is limitless. |
|
voice
New Member
Goals are a form of self inflicted slavery
Posts: 41,222
|
Post by voice on Sept 15, 2023 14:41:20 GMT
As ever there are those who belive a lack of clear explanation means aliens, despite its being very very unlikely. Sure it's an outside possibility, but the best we can say is, while we can't explain UAPs there is zero evidence they are aliens.
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 23, 2023 17:26:30 GMT
old article but still interesting. Did volcanoes erupt on the moon while dinosaurs roamed Earth? "Scientists thought the moon has been cold and dead for roughly a billion years. But strange small features on the surface discovered by NASA’s Lunar Reconnaissance Orbiter reveal that there could have been volcanic activity during the time of the dinosaurs. That’s practically just last week, by geological timescales." www.latimes.com/science/sciencenow/la-sci-sn-moon-volcano-recent-nasa-lunar-20141014-story.html |
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 24, 2023 15:00:10 GMT
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Sept 24, 2023 15:08:45 GMT
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Oct 3, 2023 15:42:59 GMT
|
|
rick49
New Member
Posts: 17,031
|
Post by rick49 on Oct 6, 2023 1:21:22 GMT
|
|
