For more information about some of those questions, I found some more in depth research papers from both NASA and Harvard:
Not realy science so therefor here.
A Colorful âLandingâ on Pluto. What would it be like to actually land on Pluto? This movie was made from more than 100 images taken by NASAâs New Horizons spacecraft over six weeks of approach and close flyby in the summer of 2015. The video offers a trip down onto the surface of Pluto
Woolly mammoth on verge of resurrection, scientists reveal
(This can go into real science once it works⌠and I =found this thread first!)
Starâs seven Earth-sized worlds set record:
The interesting thing is that NASA is calling it habitable, but only by zone. Thereâs no way to know if humans could live there (atmosphere composition, temperature, air pressure etc).
The cool thing I did learn though is that we would have to migrate to a place that had to be within the size of our Earth. Gravity is larger on larger planets, and although it would be ideal to have a larger place to live⌠water and life may not be able to flourish on a planet the size of Jupiter.
Itâs actually very important that theyâre around 1x g. Any planet with significantly higher gravity would probably drastically reduce life span as your heart has to work much harder to pump blood around your body.
Statistics like that make me wonder how we could provide a scientific manifesto of just how rare something like the Earth is/how hard it would be to find a new home.
2 Likes
I know itâs hard, but scientists must find a way to explore these world, not just to measure them. So much things to see in our galaxy. I want to see how life is formed in planets with higher velocity, higher/lower gravity, and itâs obvious Earth is not the only planet with life (Iâm sure weâre going to have surprises in our own system (realistic surprises though)
Is it not the most stupid thing to be born just a little too early before we start to discover all of this ? Please Universe make humans find a way quicklyâŚ
1 Like
Donât ask the Universe ask yourself. If you want it that badly then work for it, donât wait for others to do it for you.
Assuming we can effortly and quickly accelerate to c, itâs a 40 year trip to that system. Itâs not just hard itâs impossible as far as we know to beat that. So today we can start with baby steps. We are still dipping our toes into our solar system but I promise itâs not the universe making it happen but thousands of people working hard towards that goal.
1 Like
Yeah like if humans wasnât maiking wath Universeâs laws âdecideâ (sorry for that word , I donât see what to use instead, as you can guess)
And it is 40years if the shortest distance is an unmovable straight line of space-timeâŚ
Earliest evidence of life on Earth âfoundâ
âThis is the oldest evidence found to date of the beginning of life.â That statement makes more sense.
Anyway.
1 Like
First form of life was Canadian, eh?
Metacanada.
Strangely enough at the LA County Museum, a lot of the T-Rexes primarily lived in Montana area. Montana was one scary darn place to live back then.
1 Like
This is speculation at this point. But how they want to check out the possabal (spelling) satellite is worth the read. (at least for me)
Signal may be from first âexomoonâ
A team of astronomers has potentially discovered the first known moon beyond the Solar System.
1 Like
The Results of The Best EM Drive Test Yet - Scott Manley discusses.
2 Likes
It hadenât done anything yet so I put it hereâŚ
1 Like
Well they have to start somewhere I guess. But far to little effort and funding being put towards solving the space junk problem. What happens when private flights want to go up and around the earth and out further to the Moon etc. It all needs to be cleaned up in the next 20 odd years else its going to really cause some really serious problems. It only takes one large satellite to break up by being hit by space junk then the snowball effect will take out everything in orbits high and low, equator and polar.
Edit: It appears I was wrong (see below) thinking there was little effort under way, when there appears to be many ideas in the works.
1 Like
Thatâs just not true at all. There are many universities and companies working on prototype satellites using many methods to attempt to deorbit space debris. We are actively researching right now because it is such a problem.
https://www.space.com/35543-space-junk-japan-tether-experiment-space-station-htv.html (Failed, but thatâs space)
You have the guys from Surrey from the article Bentware posted.
Another satellite was just or about to be launched that will be testing 3 different methods of capturing debris. I donât know if thatâs from Surrey or another one I heard about.
On top of all that, we donât have the proper research done to allow such a scale of RPO(Rendezvous and proximity operations) to be done. If we send up 500 satellites how do we have them report their constantly maneuvering positions to avoid collisions with other satellites? Who do they report to?
Before you can have the necessary hundreds to thousands of satellites you need rules of the road that are only being established now.
https://www.darpa.mil/news-events/2017-10-04 For the record, on orbit servicing can be refueling, repairing, or deorbiting space craft and debris.
I can assure you the problem is being taken very seriously in the space community.
This is also not true. The way Gravity portrayed orbital mechanics was 100% wrong.
When the US tested their ASAT missile it was on a LEO sat. Most if not all of the debris from that event has already deorbited. Debris tends to stay where it is. A collision in GEO will not effect LEO in any way and vice versa. Under ~-600-700km Altitude the debris will deorbit ârelativelyâ (A decade or two) quickly. The rest is pretty permanent.
You can definitely have those events that lead to a snowball effect that essentially destroy an entire orbit, but for the most part it will be just that orbit.
2 Likes
I spoke without checking the current projects in the works, my bad. I watched a space junk docu (2015) where a scientist created a simulation showing how one satellite collision might snowball and eventually cause this effect. Debris from a collisions could be thrown into low and high orbit and also the earth not perfectly spherical, this might cause the debris ring to stretch out around the planet eventually.
I remember seeing it in a BBC docu about space junk back in 2015. Thats was what I was thinking off. BBC Horizon - The Trouble with Space Junk (2015) - watch from 10 minutes >
2015, things might have changed since then, and that simulation might not be a accurate now. BBC Horizon do tend to be as factual as they can when they make these programs.
Your right of course, there does appear to be plenty more efforts in the works that I had not been aware of. A massive and highly complex task to clear it all up, its going to take many decades.
1 Like
Most of the time, those simulations are depicted as being as wildly catastrophic as possible in order to entertain viewers.
Skyentist is taking a degree in which his class some time ago (I never did solve that problem you gave me 
) was Orbital Mechanics. Iâd trust his word to a pretty strong degree if for no other reason.
EDIT: That being said, the âdestructionâ of an orbit has a great many problems, including the need to armor future craft against impact if they have to pass through that orbit at all, or extreme tracking and launch planning to avoid catastrophic damage.
2 Likes
Saturn moon a step closer to hosting life
What? Has it been going to âhosting life schoolâ?
Still interesting.
Asimovâs 2019 predictions - fiction or fact? - BBC
Back in 1983, science fiction writer Isaac Asimov was asked to predict how the world would look in 2019.
His thoughts, written originally for the Toronto Star newspaper, can now be compared against reality.
Many have proved surprisingly accurate.
1 Like
Itâs 2019, the year Blade Runner takes place: I can has flying cars? - theregister
Harrison Ford with a spinner in a still from the 1982 Ridley Scott film. Pic: Warner Bros
1 Like