Space, Stargazing and the Night Sky

Shouldn't laugh , but I did

 

That's the thing when people have these debates about life on other planet. They always base their criteria on conditions which life on earth would require to survive.

Life on other planets will likely have evolved to suit their own habitat.

 

Well we don't really have anything to base things on other than life on earth. Until there is actual evidence life exists in a way we don't expect there's not much point speculating about that, as it is just science fiction at this stage. Yes it could well be different in other places, or perhaps life everywhere needs water to begin before it can evolve to suit its environment. We just don't know. What we do know are what the criteria for life to start here were and,as that's the only foundation we have, it makes sense to start looking there.

 

Footage of Perseverance landing on Mars.

Pretty cool.

https://www.bbc.co.uk/news/av/science-environment-56159376

 

Well they done it. SpaceX the mad * only went and landed Starship SN10...

I mean it blew up spectacularly a few minutes later but they stuck the landing.

 

I know I shouldn't laugh, but that was funny. I don't know if that video was edited but if not they couldn't really have timed the explosion any better to tie in with the voiceover saying it was a beautiful test flight.

I'm sure they will learn a lot from that, then it's onwards and upwards, as they say. Followed, no doubt, by a lot of downwards and spread for miles in all directions knowing SpaceX.

 

great landing EVEN BETTER EXPLOSION

 

https://www.google.co.uk/amp/s/www....3/key-universe-works-may-have-discovered/amp/

Love * like this.

 

And I struggle to control the remote helicopter I got at Christmas ..

Seriously though this is amazing what they have managed to do and the pictures we are going to, hopefully, get in the coming weeks/months are going to be worth the wait.


https://www.bbc.co.uk/news/science-environment-56799755

 

Moon looks nice tonight.

 

Virgin Galactic managed their first successful full-crew test flight today.

 

Scientists believe there could be an ‘anti-universe’ next to ours – where time runs backwards


A wild theory suggests there may be an "anti-universe" that runs backwards in time before the Big Bang.

The concept, explained in a paper accepted for publication in the journal Annals of Physics, suggests that the reason for this universe is because there are fundamental symmetries in nature – such as charge, parity, and time. This fundamental symmetry is known as CPT symmetry.

Physical interactions generally obey these symmetries, but physicists have never observed a violation of these laws of nature simultaneously. The researchers posit that while this symmetry applies to interactions, it could also apply to the entire universe.

As such, to preserve this symmetry, there could be a mirror-image cosmos to balance our own.

The consequences to this universe existing could explain dark matter. There are currently three known types of neutrino: electron-neutrinos, muon-neutrinos and tau-neutrinos, all of which spin in the same leftwards direction. Physicists have wondered if there might be right-spinning neutrinos, but have never detected them.

A reverse universe would necessitate the existence of one of these new kind of neutrinos, but it would be undetected in physics experiments and could only interact with the universe through gravity – similar to dark matter.

If true, the number of right-spinning neutrinos in our universe would be enough to account for the dark matter physicists have detected, Live Science reports.

Although we would never be able to access this universe, because it exists prior to the Big Bang, scientists can test the hypothesis. They predict that the three known neutrino kinds would also be their own antiparticles (in contrast to electrons, for example, whose antiparticles are positrons). This classification is known as Majorana particles; currently, scientists do not know if neutrinos have this characteristic.

Moreover, one of these new kinds of neutrinos should be massless – and should physicists ever be able to conclusively measure the mass of these subatomic particles, and discover they have none, it would reinforce this theory.

Finally in this model inflation, the natural expansion of the universe, has not occurred. Physicists believe that inflation had such an effect on space-time that gravitational waves flooded the universe, but in this alternate universe no waves should exist. Under experiments, if primordial gravitational waves are not found, this could reveal that a CPT-mirror universe model is accurate.

 

I've always found reverse time symmetry and parallel universe theory as wackadoo as religion and *'s wee boy feeding thousands with 3 fish.
There's not much point speculating on the direction and mass of neutrinos if none have been verified.

 

Just noticed this thread. Don't know too much about astronomy or physics but very fascinated by it. Took this photo last year at Loch Doon if anyone likes this kind of stuff.

 

Beautiful photo Wilm.

 

That is a beautiful picture

 

Cheers mate. Great place to go if you are ever up in the area. Perfect to view meteor showers and you can watch see satellites pass over. Milky way very clear on a low moon too.

 

Thank you

Was saying to Buchananbhoy it's well worth going to see. Got tons of photos and a couple of timelapses but the experience of it is much better.

 

Just googled it and I must say it looks like a beautiful place and would be great for spotting wildlife too