the billions of hydrogen bones. back that then won't you impact is so violent that the impacting object is destroying less fuel for the surface of the earth is completely liquefied and the core of the impacting body penetrates the earth's mantle becoming part of the earth's core we think the earth's core fused with that of the impact and body. though. the collision was so violent that the water contained in they are was driven deep into with school mixing with the water already present them in this way they are hydrated the depths of the earth's mantle making it possible later for the plate tectonics system to function. as a species speculative us but if it's right and it's impressive it shows us that for life to have existed on earth all this time that we needed that chance impact a very early in earth's history to hydrate the mantle and maintain its lubrication and have this phenomenon this geophysical thermostat all throughout the planet's

existence would have been at. least seen in catastrophe you would end up being beneficial in another way as earth gained a new companion which would play a major role in the blossoming of our ecosystem out of the cloud of debris resulting from the collision a new body would gradually form the move. to. resist them of the earth moon system is unique in the solar system and as far as we know in the galaxy system it's a very particular system where both objects are large objects this is why certain astronomers talk about double planet but i may have to go.

barely had it come into existence than the moon was already exerting a powerful influence over the earth because of its considerable signs. the history of the earth moon relationship has been studied very closely thanks to the apollo missions. miniature poodle and in the apollo missions placed reflectors on the moon surface these were factors are used today to reflect back laser beam as emitted from earth such as this one behind me. there's a regular emission from here the color and plateau and the friends seen that i phones. today many observe the trees around the world like this one in the outdoor provosts moment of the moon closely every night scientists use

a laser beam to make a precise measurement of its distance from the earth. so this balance will close up on these are important experiments because we can measure how long it takes the laser beam to go to the moon and back. so we can measure in real time the distance to the moon. and one major finding which we sort of knew before but are now sure of is that the moon is moving away and it's moving away at a speed of 3 or 4 centimeters per year ready. these measurements have shown that when it formed the moon was much closer to the earth than it is today. that is soon after the moon formed if anyone had been here to see the moon it would have been gigantic in the sky because it was so close to them said it's going to it's now it's 380000 kilometers from earth but 4000000000. years ago we think it

was only 15000 kilometers distant doesn't think you meant that out there. that post any delay proximity of the moon had a 1st consequence of creating bigger tide and therefore maybe stimulating via logical evolution in. 'd the times caused by the moon churned up the oceans and contributed to the dynamism of our ecosystem and the mutual attraction between the 2 bodies also had a crucial effect on me a rotation all access. this interface of a something more than what the effect wasn't just the tides it was much more to that effect that it's stabilized to the famous tilts on the angle of $23.00 degrees i would urge will act as a filter in relation to its trajectory around the sun all the way and this angle has stayed constant for billions of years i mean yeah then it seems you know we both knew no dollar that if the moon hadn't been there the earth's rotational axis

would have oscillated causing rapid changes in the climate and this could have had huge consequences on evolution that fail with rapidly alternating periods of glaciation and warming for example on the bell the less assume that valuation of one. the moon helps the earth maintain a climate stable enough for the slow and gradual evolution of life. without the moon the earth would have been faced with the same up he evil's as its neighbor months. saw the mounds of mars phobos and deimos are so small. or that they play no

stabilizing role on the rotational axis. i mean if there have been a very big variations in the rotational axis of mars laughs. what's more this rotational axis has moved all around the surface of mars yes there as far as ops. mars became a desert earth a garden of eden. live at the present earth moon system is the result of a long series of accidents making the earth and moon a unique couple in which. earth now had a stable climate and atmosphere and liquid water and surely everything was perfectly set up for life to appear and evolve but the earth still lent to the basic

ingredients of life organic molecules. all living things on earth a made of the same building blocks long carbon based molecules scientists now think that a large proportion of these molecules came from outside planet earth. limerick you know on many of the organic molecules that is the basic elements necessary for life is are found in space or your destiny are already there in media right now some are 60 percent organic material which is you know and a lot still to earth. the original organic molecules which may have sown in the seeds of life on earth were present in the distant cold zone of the solar system but how did these building blocks of life travel to our planet the rosetta miss. the 1st to ever attempt

landing a module on a comet sheds some light on this mystery. jumpier be bring was one of the scientists behind this all dangerous mission se go on that was really this is what we saw on the 14th of july 2014 of when we got there so we thought why should i suppose we can't land on that it's not feasible with us if this is tiny at regular america the whole thing is only 4 kilometers and it's revolving around an outward act like that without we'd never find a spot to stand down and it was crazy so it covered more for. a few months later the probe feel a managed despite all the difficulties to touch down on the comet cheery. always you have killed a few days here you see the lies leg and an object made just a few years ago and here the oldest object in the solar system so they are the same

as when it formed 4600000 years ago it was the 1st time and it will happen again so much more that we set something down in a common cause. with the 1st analyses the scientists realized that comets a very different from what they had supposed he may have value to do it as well for there's no water on this comet surface you know there isn't an ounce of ice we thought it was in the ice with a few molecules and not at all i always see here is organic material for them at allegheny. thanks to the rosetta mission scientists discovered that comets are abundant in the building blocks of life. up until then they had thought that only asteroids little rocky bodies with us in doubt. since the. earth of the solar system comets and asteroids

have gravitated in the colder regions where they capture and store these original organic molecules. then these comets and asteroids veritable messengers of life transport these molecules into the inner zones of the solar system. as they pass close to a planet they disseminate these building blocks on to the surface providing it with the wherewithal for life. scientists are keen to undertake libertarian alice's of organic molecules similar to those which fell into earth's oceans this was the aim of the high up boozer to mission launched by the japanese space agency to bring back to earth the few fragments of this original organic matter. the sample was collected in july 201-9300 1000000 kilometers from earth the mission was

a success of them all this is the moment when it touched down the hallways you could pick it to see the leg touching down there with all its mind blowing on it well probably then you see it take off again proceed to create the principle for taking examples as for it not to linger in this song it touches down the fires the bullet and leaves again with the debris that the guy it takes a few seconds with us and it all happens very far from earth of course that there is you're. a slave it's completely mind blowing we hope that in a sample of this carbonaceous material from which we think life on earth began appearing. the probe is bringing back a 10th of a gram of these precious building blocks of life similar to those which landed on the planets of our solar system some 4000000000 years ago. a population of the order from this material we want. to find out what the initial

ingredients were in the waters of earth primordial oceans made possible the great chain of terrestrial biology your vision. comets and asteroids could be the missing links of a long chain the chain began with the simple molecules found in the early cloud dusts and culminated with the building blocks of life from which life on earth 1st sprang the chain leading to life.

back. everything on life. the labor market completely digital and this start up even much comes out of the printer. what about working from us an email here a child message there was the calm way from burn out more psychological hygiene or you'll get a remote telling off from the doctor maybe he needs that more screen time is out of the question we have to turn back or else it's really going to be good for me in germany. 30 minutes w. . the power of words. where i come from i never saw

the sun the way to. having grown up in brazil in the sun was always a man since the portuguese word 1st sun it's masculine when i moved to germany as a 10 year old i watched a cartoon on t.v. that would change how i see the world because in german the 1st family didn't. see me now but the side of a good listener so i responded to it instead of a deep voice extroverted guy seemed absolutely incredible. i realized how language shapes and thinking how definitions are not only mental image just put out a whole perception of the world. is inside save my life and was one of the reasons i became a journalist i'm a storyteller and i use my words to help with intercultural understanding my name is that when i'm away you can i work and to tell people.

this is the news live from prosecutor some jail surely images to make that case against donald trump on the 1st full day in his impeachment trial a show rioters breaking into the capital as overwhelmed police officers. but. also coming off germany stands it's locked down even though infection numbers are going down there are some exceptions spot fears of coronavirus mutations have chancellor angela merkel insisting on keeping restrictions tight courtney's.