All Things Space

Gromit

Habitué
Messages
8
I was out with my camera today and shot a few photos of the Sun. Not as cool as the photo of the black hole, but if you zoom in you can see some sun spots.

SOL.jpg
 

mlnevese

Innkeeper
Staff member
Messages
634
Here's another lecture by Kipping in which he argues (contrary to what he says in his other lecture, shared by @OrlonKronsteen) why we might be surrounded by alien civilizations.


Another possibility is we are the most advanced civilization in this corner of the Galaxy and that's why we are not seeing anyone... or the others use technologies to communicate we have not developed yet. There are many better ways to communicate in long interstellar distances than radio, that mostly becomes noise after around 1 light year. Gravimetric wave, tachyon beans (if tachyons even exist.), etc.

In other words, everyone may be chatting around us. We are just deaf.

Of course, we should be seeing something but in some ways it's like trying to locate a needle 10km away with a pair of cheap binoculars... we MAY be able to see star sized structures if they are out there somewhere....
 

Antimatter

Administrator
Staff member
Messages
1,382


Of course, telescopes don’t see the past, but they detect the light that was emitted billions of years ago. This is because light can only travel 300.000 km/s in a vacuum. So, it takes significant time for even the light to travel across the vastness of the universe.
 
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