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Tue Sep 8, 2020, 11:40 PM

yortsed snacilbuper (7,823 posts)

Scientists find no sign of aliens in study of 10 million star systems

Australian astronomers say they've found no technological signs of alien life in a study of more than 10 million star systems.

Perth-based researchers used the Murchison Widefield Array (MWA) radio telescope in the Western Australian outback, in a project dubbed 'looking for ET'.

The MWA searches for powerful radio emissions at low frequencies, similar to FM radio frequencies on Earth that allow radio broadcasts.

These emissions from space, known as 'technosignatures', could possibly indicate the presence of an intelligent aliens with technological innovations similar to our own.

The team completed the 'deepest and broadest search' of a patch of sky known to include at least 10 million stars, in the southern constellation of Vela.

But the researchers concluded that, in this part of the universe, other civilisations are 'elusive, if they exist' at all.

aliens

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15 replies	Author	Time	Post
Scientists find no sign of aliens in study of 10 million star systems (Original post)	yortsed snacilbuper	Sep 2020	OP
What if the don't use	qazplm135	Sep 2020	#1
Lasers would be less wasteful, not spread in all directions.	Buckeye_Democrat	Sep 2020	#2
Not to mention that's just a TINY fraction of our galaxy	Buckeye_Democrat	Sep 2020	#4
Or at least they are smart enough to want not to be found by us. n/t	PoliticAverse	Sep 2020	#3
no technological signs	JustFiveMoreMinutes	Sep 2020	#5
Our VHF transmissions would be undetectable at that range.	lagomorph777	Sep 2020	#12
In the words of Don Henley,	Bayard	Sep 2020	#6
People who think there are aliens with advanced technology alive now dont grasp the size of universe	Eko	Sep 2020	#7
Yes, could be same pattern each time advanced life develops - they bring about their own extinction.	Doodley	Sep 2020	#8
I saw a video of a physicist once where he described it.	Eko	Sep 2020	#11
Actually, using your numbers of 1070 and 13.7b...	Layzeebeaver	Sep 2020	#9
Checking mine and your math	Eko	Sep 2020	#10
I think that if we can survive the next 200 years we will probably be around	StevieM	Sep 2020	#14
A big "if", indeed . . .	hatrack	Sep 2020	#15
Damn, chances of aliens saving us from Dotard are pretty slim. Nt	raccoon	Sep 2020	#13

Response to yortsed snacilbuper (Original post)

Tue Sep 8, 2020, 11:43 PM

qazplm135 (5,306 posts)

1. What if the don't use

Radio for space communication?

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Response to qazplm135 (Reply #1)

Tue Sep 8, 2020, 11:46 PM

Buckeye_Democrat (10,502 posts)

2. Lasers would be less wasteful, not spread in all directions.

And maybe they're more like Stephen Hawking and wary about advertising themselves?

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Response to qazplm135 (Reply #1)

Tue Sep 8, 2020, 11:52 PM

Buckeye_Democrat (10,502 posts)

4. Not to mention that's just a TINY fraction of our galaxy

... and our Milky Way is just one galaxy among hundreds of billions of other galaxies out there.

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Response to yortsed snacilbuper (Original post)

Tue Sep 8, 2020, 11:51 PM

PoliticAverse (22,511 posts)

3. Or at least they are smart enough to want not to be found by us. n/t

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Response to yortsed snacilbuper (Original post)

Wed Sep 9, 2020, 12:03 AM

JustFiveMoreMinutes (2,083 posts)

5. no technological signs

which must match ours from the first/last light years away.......

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Response to JustFiveMoreMinutes (Reply #5)

Wed Sep 9, 2020, 08:40 AM

lagomorph777 (19,728 posts)

12. Our VHF transmissions would be undetectable at that range.

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Response to yortsed snacilbuper (Original post)

Wed Sep 9, 2020, 12:14 AM

Bayard (10,755 posts)

6. In the words of Don Henley,

Do you think aliens go screaming through the universe, just to get McNuggets?

If the search parameters only include what humans can understand, we're not likely to find anything.

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Response to yortsed snacilbuper (Original post)

Wed Sep 9, 2020, 12:17 AM

Eko (5,047 posts)

7. People who think there are aliens with advanced technology alive now dont grasp the size of universe

And the immense time of it. The age of the universe is 13.7 billion years. Out of that 13.7 billion years how long have we been able to even see our solar system with enough tech to be able to know that we are the only life in it? 70 years? How much longer do you expect for us to be around? Lets say another thousand years. What is that like .07% of the time the universe has been here?

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Response to Eko (Reply #7)

Wed Sep 9, 2020, 12:39 AM

Doodley (7,647 posts)

8. Yes, could be same pattern each time advanced life develops - they bring about their own extinction.

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Response to Doodley (Reply #8)

Wed Sep 9, 2020, 01:47 AM

Eko (5,047 posts)

11. I saw a video of a physicist once where he described it.

He held out his hand and would make a opening and closing gesture with a psst noise quickly to show how civilizations would have risen to the level that they could see even part of their solar system and then died compared to the time of the universe. Wish I could find it.

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Response to Eko (Reply #7)

Wed Sep 9, 2020, 01:00 AM

Layzeebeaver (420 posts)

9. Actually, using your numbers of 1070 and 13.7b...

It computes to 0.00000007810219th of the life of the universe.

Dividing by 100 to format as a percentage just makes me remember that I’ve forgotten way too much math during my portion of the universe’s life.

Regardless, your point is very valid!

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Response to Layzeebeaver (Reply #9)

Wed Sep 9, 2020, 01:44 AM

Eko (5,047 posts)

10. Checking mine and your math

I think it is 0.00000781021897810219%. I went to here https://captaincalculator.com/math/percent/percentage-calculator/. Feel free to correct me if Im wrong. Thanks for backing me up!!
Eko.

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Response to Eko (Reply #7)

Wed Sep 9, 2020, 01:03 PM

StevieM (10,031 posts)

14. I think that if we can survive the next 200 years we will probably be around

for more than another 1000 years.

If climate change does not finish us off then I think we will find ways of preserving ourselves, and growing our opportunities here on Earth, and eventually throughout the cosmos.

But that is a big if. Once we hit 3 degrees Celsius of warming some pretty serious feedback loops will kick in that will be hard to control. We will need a very advanced, and presumably expensive, program of geoengineering.

We need to start transforming our energy economy right away. And we need to get to work on developing geoengineering strategies. If we don't then the human race could be extinct in 200 years, along with a whole lot of other species.

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Response to StevieM (Reply #14)

Wed Sep 9, 2020, 03:21 PM

hatrack (52,206 posts)

15. A big "if", indeed . . .

For a Preview Of Coming Attractions just check the West Coast today:

Link to tweet

Link to tweet

Link to tweet

Link to tweet

This is at an increase of 1C and a bit.

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Response to yortsed snacilbuper (Original post)

Wed Sep 9, 2020, 11:49 AM

raccoon (29,173 posts)

13. Damn, chances of aliens saving us from Dotard are pretty slim. Nt

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