Recent content by calis

would a baloon or a barrel 'filled' with vacuum act as a hellium balloon and float in air? of curse that would require hard shell balloon... density of air at sea level is 1.22521 kg/m3. so if we could make a vacuum chamber one m3 big that would weigh 1.22 kg it would float right...

Hello. I used to be a newbe in this forum, but this questione is easily answerable to me. someone allready answered to you that you shoul read the 2nd theory by Albert Einstein - general theory of relativity. the trick about this is that gravity is being emited,created, effected by every...

Hmm a filosofical point of view about SETI. We would call intelligent a creature that cares, comprehends and tries to reach out for the outer space (without built in curiosity one can never grow intelligent) now reagrding that if we will ever meet any form of life it is very slim chance they...

Hello i was concerned about how fast should Earth spin so that on equator gravity would be 0 due to centrafugal force i got 84 minutes - full spin since it is more like 24 hours than on equator currently centrafugal force is 0,039g but there is also one smaller centrafugal force coming from...

Yes that is what I am saying. It is built so that it can detect planets not moons. which in my opinion is incorrect. I don't know how a moondetecting instrument should work...probably the same way - measuring the dip in solar radiation (light) of a star made by host planet and see if that...

If a rocket is flying towards a radio transmitter that emits radiowaves (100 fm for instance) fast enough. does these radio waves get stacked up and become visible light. extrapolated question. can we (by changing the relative velocities between transmiter and receiver) shift from any...

keppler mission (loounched march 2009) which is the most expensive and promising planethunting device... is built to detect earthlike planets in an area as big as two constilations. it is not explicitly pointed to known jupiters in habitable zone. 1. so i guess we are concentrating on...

why planethunters and astrobiologists are concentrating on finding life on Earth like planet with an orbit around host star rather than on jupiterlike planets moon i was browsing through the essentials of complex life to evolve on a planet. i am sure you all pretty much know that. plate...

i know that there have been certain success in transforming nerve to elevtric impulses in both directions. it seems to be really hard to find anything on that topic. have we managed to implant a calculator or a dictionary, or a mobile phone in human head yet? can we operate machines by...

actually I was thinking of not 3 bn years old single cell organisms, I believe we will not find any fossils or any leftovers. with this topic I tried to say that life just as well shuld have formed recently, let's say couple of millions of years ago. then the fossil record whould not be...

Ok but I know that there is no mouse size organism. I am saying that leftovers from alienlike single cell organisms are not even found. every single cell organism that has EVER lived have ONLY one tipe of DNA. We have found a LOT of extinct single cell organisms but they all use DNA. Could...

Ok OK. Even if I think that entirly new life forms that began life after world was inhabited does not neceserally have to be eaten stright away. (I mean there are so many speceis in world that should not exist because someone should have eaten them well before it even got started ( for...

the question of curse is not about artificial life creation

Ok but it is not said that new life forms necesserily have to be food for someone else. well it started first time when there was no oxigen. life can get through hardship. I mean advanced life on Earth have been for something like 500 million years. is it really so that for all this time it...

Hello I am new to the field. Can someon answere, i cannot find the answere in books. if life 3.8 billion years ago could form in very harsh conditions. then whay cannot it happen again today. whay cannot it have been happening all the time for almost 4 billion years. i have read that all...