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Extraterrestrial

NASA scientist answers the question - 'do aliens exist ?'

October 26, 2021 | Comment icon 130 comments



Could we really be alone in the universe ? Image Credit: CC0 Pixabay
NASA astrobiologist Lindsay Hays takes a stab at answering one of life's most fundamental questions.
The question of whether we are alone in the universe remains one of the biggest philosophical conundrums of our time. While it seems almost inconceivable that our civilization is alone in the cosmos, the fact still remains that we have yet to see any evidence to the contrary.

For some, scouring the cosmos for signs of alien life has become a life-long passion.

In a recent video (viewable below), astrobiologist Lindsay Hays discusses at length the search for life outside of our planet and exactly where, in our own solar system at least, scientists are looking for it.

Much of the focus has been on looking for signs of microbial life - something that is likely to be far more abundant throughout the universe than complex, sentient beings like ourselves.
"We've only explored a tiny fraction of Mars... and that's only one of the promising bodies to look for life in our solar system," she said.

"There are icy moons in the outer solar system like Saturn's moon Enceladus and Jupiter's moon Europa that look like they may have subsurface oceans that could be habitable."

"And that's just what's in our solar system. The more exoplanets we find around other stars, the more we learn about how many different environments could exist for life."

At the end of the day, given the sheer scale of the universe and the number of planets that we now know exist in our own galaxy alone, the likelihood that the Earth is the only planet on which life has emerged seems unlikely to the extreme.

"Two possibilities exist: either we are alone in the universe or we are not," science fiction writer Arthur C. Clarke once said. "Both are equally terrifying."



Source: Sci Tech Daily | Comments (130)


Recent comments on this story
Comment icon #121 Posted by Manwon Lender 6 months ago
My first introduction to a Computer was during my Miltiary Career, below is of the model I learned on its Wang model 240. It had MS-DOS 2.1, and 5.25 floppy disk drive that would store a wopping 1.2 MB, it had very early Intel 286 processor. and the system was Command Prompted, so you had to type in the necessary code to open file ups and access the Floppy Drive. I was sent to school for two week to learn how to use the system. It also came with Microsoft Basic which a computer language that allowed you to make your own programs. Man I thought I was in heaven, this was the future man and I was... [More]
Comment icon #122 Posted by Nobu 4 months ago
I ate lunch with one last week. I feel pretty confident on what “they” have. but you do you.
Comment icon #123 Posted by Skulduggery 4 months ago
I think that humans far too often assume a greatly advanced extraterrestrial civilization would think similarly to humans, but of course more advanced. Whatever life may be out there probably developed much differently and wouldn't be recognizable as life, let alone think like humans. No space stations, no cataloguing of other life forms in the galaxy/universe, no human thoughts. Think of all the life on Earth that predates humans. Birds, caimans, insects, viruses, whatever. Are they more advanced? Well, they were here much longer. When I think of the possibility of life in the universe, micro... [More]
Comment icon #124 Posted by Montello 4 months ago
https://www.cryptopia.us/site/2018/09/potosi-sheep-slayer-bolivia/
Comment icon #125 Posted by badeskov 4 months ago
Ok, so another unevidenced anecdote.    Cheers, Badeskov
Comment icon #126 Posted by Montello 4 months ago
Badeskov hello greetings  something happenned that alien kill.all.sheeps
Comment icon #127 Posted by Rlyeh 4 months ago
Something happened, therefore aliens
Comment icon #128 Posted by Earl.Of.Trumps 4 months ago
Evidence evidence everywhere and not a drop to drink
Comment icon #129 Posted by badeskov 4 months ago
I have still to see any evidence, Earl. Anecdotes are plentiful, actual evidence not so much.    Cheers, Badeskov
Comment icon #130 Posted by Earl.Of.Trumps 4 months ago
I see.  So when modern graphics forensics techniques show that there is an object under the cloud of smoke in the LA Times photo in the Battle of LA, that is "anecdotal"?? Or when the military says that radar picked up the object coming in off the ocean before it went on to LA - that too is anecdotal?  Or when the US Army General in charge of the LA sector says 1,400 rounds of anti aircraft shells were fired at the object, that too is anecdotal? Or when the US military says that the skybound object that night over LA was a weather balloon, you call it anecdotal??   Or when eyewitnesses say wha... [More]


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