Mercury, the smallest of the inner planets, is the closest to our Sun and the smallest of the terrestrial planets. It has a grayish color, deep craters, and a thin layer of tiny particle silicates. Its magnetic field is only about.
The four most likely planets to sustain life based on their environment are Mars, Europa, Enceladus, and Titan. Life on a planet requires liquid water, at least one source of it. Seismic measurements directly probe a planet’s interior, determining structure and providing constraints on composition and mineralogy. On Earth, volcanism is generated because the planet’s interior is hot, with much of the volcanic activity caused by plate tectonic activity. However, on Venus, there is no evidence of plate tectonic activity.
Terrestrial planet interiors consist of three basic parts: a dense, metallic core, a lower density solid mantle surrounding the core, and a solid outer shell called the crust. Jovian planets have a core. Planetary interior refers to the internal structure of a planet, including the mantle and core, where heat is generated and transferred through processes like convection and thermal. At least six of these worlds—two orbiting Saturn, three orbiting Jupiter, and one by Neptune—might host watery oceans, sandwiched between a warm planetary core below and ice crust above.
The inner planets, or terrestrial planets, are the four closest to the Sun: Mercury, Venus, Earth, and Mars. The status of Mercury, Venus, Earth, and Mars as inner planets is recognized by everyone, as they are relatively close to the sun and also have similar structures. Students will make scale models of the interiors of the nine planets and compare them, observing that the structures of the four inner planets are similar.
📹 How You’d Look Living on Different Planets – 3D Animation
Why do we look the way we look? Most of it’s down to our planet Earth, its atmosphere, gravity, that kind of stuff. When you go on a …
What is most of the interior of our planet like?
Earth’s core is the hot, dense center of our planet, located about 2, 900 kilometers below the surface and with a radius of 3, 485 kilometers. It is the center of all life in the known universe. Earth was formed around 4. 5 billion years ago as a uniform ball of hot rock. Radioactive decay and leftover heat from planetary formation caused the ball to get even hotter. After about 500 million years, Earth’s temperature heated to the melting point of iron, causing the iron catastrophe.
This event allowed greater, more rapid movement of Earth’s molten, rocky material, while buoyant materials like silicates, water, and air stayed close to the planet’s exterior. Droplets of iron, nickel, and other heavy metals gravitated to the center of Earth, becoming the early core. This process is called planetary differentiation.
What is the closest likely habitable planet?
The list of the closest extrasolar planets to Earth is Proxima Centauri b, c, and d, each located 4. 22 light years away. Proxima b is the closest potentially habitable planet. The list contains 37 extrasolar planets, with 11 likely in the “habitable zone” of their stars. There are approximately 2, 000 stars at a distance of up to 50 light-years from the Solar System, with 64 being G-type stars like the Sun. As many as 15 of these could contain an Earth-sized planet in the habitable zone.
Has anyone been to the Earth’s core?
It is improbable that the Earth’s core will be reached due to the elevated levels of heat, pressure, and radioactivity. Even if it were possible to bore through 6, 000 km of rock and metal, it would not be feasible for a probe to survive the conditions. Nevertheless, our planet’s vibrations, generated by seismic activity and interpreted by scientists such as Inge Lehmann, enable us to explore regions that are inaccessible to us through direct observation.
Which planet is most likely to be habitable?
TRAPPIST-1e, one of seven Earth-size planets orbiting TRAPPIST-1, is considered the most potentially habitable due to its similar density and potential water on its surface. These planets are ideal targets for future observations of potentially habitable exoplanets due to their intriguing characteristics and proximity. However, it may take years before biosignatures can be detected, and it may take another 10 years to develop facilities. It is crucial to develop facilities as most of the closest potentially habitable worlds are detected via the RV method only.
Which inner planet is the hottest?
Venus, the second planet from the Sun and our closest planetary neighbor, is the hottest and third brightest object in the sky. Its thick atmosphere traps heat in a runaway greenhouse effect, making it the hottest planet in our solar system. Venus’ surface temperatures are hot enough to melt lead, and below dense clouds, it has volcanoes and deformed mountains. The ancient Romans could easily see seven bright objects in the sky: the Sun, the Moon, and the five brightest planets: Mercury, Venus, Mars, Jupiter, and Saturn, named after their most important gods.
Can humans live on Kepler-452b?
Kepler-452b, a planet in our solar system, is in the “Goldilocks zone” due to its perfect distance from its star, allowing water to be liquid at temperatures between 0°C and 100°C. This is similar to Earth, where Venus is too hot to boil water, and Mars too cold to freeze it. Astronomers have also measured Kepler-452b’s mass, as it passes in front of its star once every orbit, as seen from Earth. This aligns with the Earth’s ideal conditions for life.
Can a rocky planet have rings?
Large, gaseous outer planets have ring systems, while small, rocky inner planets do not. Scientists are unsure of how these rings came about, but they may have formed from leftover material from the planet’s formation or the remains of a moon destroyed by impact or broken apart by the parent planet’s gravitational force. The reason only gas giants have rings is related to the same process that resulted in gas giants forming only in the outer Solar System while rocky planets formed only in the inner Solar System.
The energy from the Sun expelled most light gases and volatile molecules from the inner regions, leaving heavier elements to form inner rocky planets. The combination of large gravitational forces, the existence of volatile materials like ices, and the shepherding of material by numerous moons likely made outer planets more likely to form and maintain planetary rings.
What planet is most like Earth?
NASA considers Kepler-452b, a rocky exoplanet, to be the closest analog to our planet and Sun. Despite being 60 times larger than Earth, Kepler-452b is within the habitable zone of a G-type star similar to ours, known as the Goldilocks zone. This zone is the right distance from the star for liquid water to exist on the surface, potentially allowing life to exist there.
The TRAPPIST-1 system, located about 40 light-years away, has gained interest due to its seven Earth-sized, rocky planets and three in the habitable zone of their star. However, these planets are not Earth’s long-lost twins, as some computer modeling suggests they may have developed like Venus, making them too hot to host water. TRAPPIST-1e may be the only planet in the system still welcoming life, but without more data, it’s impossible to confirm.
Exoplanet research has evolved over the years, starting with the discovery of the first exoplanet in the 1990s and progressing to the era of exoplanet characterization. As we find more exoplanets and large populations of different types, we are introducing the era of exoplanet population statistics. This allows us to study ensembles of planets to determine which types are more common and special, and ultimately, to determine if Earth is special as a planet.
Will the Earth’s core ever cool?
Scientists have discovered that Earth’s core, which provides protective magnetic fields, is cooling faster than expected, potentially causing it to become similar to Mars. This could impact all planetary processes. The study, led by Professor Motohiko Murakami at ETH Zurich, suggests that Earth, like Mercury and Mars, is cooling and becoming inactive much faster than expected. The findings could provide a new perspective on the evolution of Earth’s dynamics and could help us understand the impact of climate change on life on Earth.
Which planets are most likely inner planets?
The inner planets, namely Mercury, Venus, Earth, and Mars, are the four planets that are in closest proximity to the Sun. These planets have shorter orbital periods around the Sun and rotate at a slower rate. Mercury and Venus are devoid of moons, whereas Earth possesses one and Mars has two. These planets are composed of cooled igneous rock with iron cores and have exhibited geologic activity since their formation. The inner planets lack rings.
Which is colder, Saturn or Uranus?
The mean temperatures of various planets in our solar system are subject to variation in accordance with their distance from the Sun. The temperatures of the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto exhibit variation. The dense atmosphere of Venus functions as a greenhouse, raising the temperature of its surface above the melting point of lead. This phenomenon represents an exception to the general trend of decreasing surface temperatures observed in other planetary bodies.
📹 5 Most Likely Places To Find Alien Life in the Universe…
Alienlife #space #spaceisamazing #astronomy Website: https://www.top5s.co.uk Store: https://www.destinationdeclassified.com …
I think what be really crazy if ended up discovering that we humans were originally a space-faring civilization, but something very bad happened resulting in us going back to Stone Age. In Halo series this basically is what happened to the human race. Forerunner won a war against us and devolved us and chosen Earth has a place to dump us on. Or another weirder thing would be discover other humans on other planets. Like how would you be able to explain that you know?
With all the life we have here on earth you would think people would be happy enough but all were doing is just perusal it all disappear i’m confused… were gonna have to forget about money races what country your from and what language your speaking and different sexuality gender and space travel for now if we want this world to change… join together as one and we could be an extremely powerful species capable of things that we can’t even imagine today.
Yes, I believe there is alien life out there of some kind. The likelihood that there is life I think is fairly likely in my opinion, but the possibility of intelligent life is far more uncommon. The time needed for life to get to the advanced stage we have gotten to would mean that life would have need to have started early and with little interference from outer space, such as asteroid impacts, a stable star, etc. I have no doubt that there is both life, intelligent or otherwise. Let us not forget that if a planet has life that isn’t intelligent, that doesn’t mean that it is necessarily microbial in nature. Whales, dolphins, primates, cats, dogs, spiders, etc. are all complex life forms, but can’t communicate with other species, much less other planets. So there may be a great deal of life, even complex life, on other planets without species that have the ability of interstellar communications.
You know I thought I read a scifi novel when I was super young about earth splitting off from the sun and all sorts of weird shit evolving in the pitch black wasteland afterwards. I always thought that was a fever-dream concept, but it’s wild to think anything like that could actually exist in the real world. All the crazy stuff that could live there, all with ecosytems just as advanced and complex as the ones here, all hidden away in complete darkness or under miles of ice. There could be whole fields of science devoted to the study of just a handful of planets like those in a few thousands years, maybe even sooner. Makes me wish I was born then, the unvierse has too many interesting things to discover that we’ll probably never even know about in our lifetimes
Regarding the comet, those constituents wouldn’t require any living organisms to be found there. I don’t know if there are aliens out there. In theory there ought to be but that doesn’t mean there are. Apart from huge spatial distances, the universe covers a huge range of time. This means that if there was an advanced alien civilization it could be long before or long after our time. That being said, our power to observe non-advanced civilizations is very limited and life apparently emerged on earth relatively quickly.
Arthur C. Clarke said: “There are two distinct possibilities…either we are alone in the universe or we’re not…both are equally terrifying.” Fermi’s paradox is undeniable. We should see life everywhere we look but not only can we not detect life elsewhere in the universe, but we can only detect a single genesis for life on our own planet where logic dictates there should be multiple “trees of life”. Even after mass extinction events cleared niches for a second genesis to occur it did not. The single genesis simply restructered itself to fill the gaps. It seems the more science tries to disprove intelligent design or creator of some sort, the more it comes up empty which only adds credence to the ideology that we are somehow special. That we were created by someone or something on purpose and with purpose. Finding life somewhere else or finding a second genesis here on earth would be the single biggest piece to the puzzle of us. If it’s out there, then life and the universe most likely started randomly as mainstream science suggests but if it’s not out there then we MUST be special and MUST have been created. But then who created the creator? The answers to life and its origins will only beget more questions. I take solace in knowing that as these discoveries are made you will be there with new Top5s to get me thinking on the next new mysteries. Thanks for the brain food!
As another comment mentioned it’d be terrifying if we were alone just think about it billions and trillions of stars an infinite space and just us? I doubt it tho but can you imagine? Think relatively how advanced our society is and we are still a relatively new galaxy as opposed to other galaxies. Think of how much we’ve evolved and just think 🤔 how many microbes similar to us have evolved in a longer time than us..
Hi Top5s! I love your articles, but I have a request. Do you think it’s possible to start writing out the names of the things you list? A lot of these sound really interesting and I’d like to learn more about them, but in many cases I have absolutely no idea how to spell them so I can’t do any further research. In this case it was number 3, I just couldn’t figure out how to write it. Just putting the names on screen when you first mention them (like “Number 1: (Name)” maybe) would help a lot! Thanks for your time.
Story time. I met this woman last night. She and I hit it off and I noticed she wasn’t wearing a ring, so I asked if she’d like to spend the night. All was going well until I noticed a brown paper bag… I asked why are you hiding it?.. what’s up? She immediately started getting violent and started swearing! Wow. I couldn’t believe how it went from 0 to 100 in less than a couple of hours. The yelling stopped and with all her rage she stormed out all mad.. with all the commotion. She forgot the brown paper bag that she was guarding the entire evening. It was hilarious!!! Wow. After all that she had forgotten the bag.!!
A few scenarios to ponder: 1: Alien life exists and “they” have been visiting/living amongst us for years, and our government’s have spent the last however many decades attempting to keep it secret from us through fear of mass hysteria and social collapse, and we have been working with said beings to further advance our technologies and knowledge. And through decades of media, such as ufo and alien films, documentaries etc, our government’s have been familiarising us with the known species/beings, so that when their existence is announced globally we will avoid war. 2: life exists but they’re far superior and either don’t deem us worthy of their knowledge and power because of our primitive, destructive and violent behaviour, or they just aren’t interested in us . 3: life exists in several forms and in several solar systems but it’s yet to be discovered.4: life exists and other world races are studying us and waiting for the best opportunity to reveal themselves regardless of what “their” intentions are. They’ll either be peaceful or hostile but either way if they’ve got the technology to come here and greet us it’ll either be to our benefit or demise, we’ll have no control over it. 5: alien life doesn’t exist but we’ll believe it does and use it as a distraction from reality whilst we continue to ignore the problems on our own planet, and keep searching the stars for some miracle. All While we’ll keep reproducing and increasing our population size, producing more waste and pollution, continue wasting finite resources, keep exploiting animals and keep destroying natural habitats to the point that the planet is beyond repair- all in the blind and vain hope that we can be saved by some higher power, but deep down we all know the human race and the world we live in, is condemned by our own actions.
“Why we haven’t found it yet” we’ll the shear size of the universe will make it mathematically impossible. Secondly we always see in the past, and this is usually thousands of years, with the exception of a handful of stars close by. Thirdly we know next to nothing about the universe and what an advanced civilization will actually look like.
observing/noticing another life form without us actually going to that planet, requires another century of revolutionary technology. so far, we are only building weapons that could destroy our own home without actually having a plan B. we can’t even leave the Earth if becomes hell. i’m sure that after we descovering life somehwere else we will begin to appreciate what’s around us. so far, we can’t go to Mars. we can’t even go to the Moon.. almost 95% of our oceans is still a mistery to us..life forms somewhere else? i like to believe there is.
The information about black holes in this article is a bit misleading. Spaghettification only occurs in small super dense black holes, large less dense black holes would not cause this effect. Also black holes do not suck anything in, as implied by saying that nothing can escape them. Speed also makes no difference; as past the event horizon, spacetime is bent in such a manner that there is no radially outward trajectory that is possible to travel, all directions of travel point towards the center. However, outside the event horizon, a space craft could orbit without being “sucked” in.
Top5s u forgot about Titan.. Titan is in my opinion one of the more likely places to contain life.. and not only that but methane dependent lifeforms instead which means they would be sooo very different from our life forms.. also it would not be anything wilder than bacteria and 1 celled organisms but it would be life.. and well Titan is the only other place in our solar system with lakes and seas, albeit methane and ethane seas yet seas none the less. which is pretty interesting and i am sure u could talk about that topic for a good 15 mins right?? 😉
You have to think about it this way the basic ingredients needed for life are the most abundant components in the universe. Among the millions of galaxies and billions of stars, statistically life might be much more common than we think out there in unknown. So big the question humanity is asking “are we alone?” The answer is simple, if the same process occurred here on earth, why couldn’t it happen anywhere else?
We have the same problem, they also knew that we exist but they cant get to us, i believe in alien life but i dont think their technology is superior, they should have been here if that’s the case, they could still be on early stages or more modern but the technology of travelling in space seems to be impossible to achieve maybe in a thousand years, but we will never know
Why does no one talk about space time Andromeda 2 light years away and if someone from the andromeda galaxy had big enough telescope to see earth they would see dinosaurs walking on earth now imagining us looking at planet 100 light years away we are looking in the past so we are looking at that planets billions of year in past
rougue planet could harbor complex alien life, deeb in its surface, close to its core .Just watch ” how to survive the end of the world” – they talk about an iceage, where ppl go deeb underground, same as if the earth was going rougue, we could survive by going to the core, and stay for very long …
Absence of evidence is not evidence of absence, you must always keep that in mind because evidence can appear in some surprising places for instance Otsi the ice man frozen in the alps between Italy and Austria, the contents of his last meal was still in his stomach and they discovered the he had arrowheads embedded in his body suggesting that he was on the run from whoever shot those arrows.
We have so little data about the presence of live on any celestial body. For example, we could not answer definitely if there is microbial life on our own moon! Remember that scientists have detected that our moon has a centre with a liquid in it, probably water. What there there was microbial life in that water? We have never dug deep to reach that water and run some tests. So we can’t answer that question definitively. I’m surprised that we are wondering of Jupiter’s moon Europa has life because it has a water ocean, when our own moon also has water. Why don’t we test our moon first? Maybe they both have water. Reaching our own moon is so much easier and faster!
I forget who said it but that if an alien civilization has mastered space travel and broken the bonds of their planet they have most likely used up all the natural resources of their home planet therefore are looking for a new one to settle. Could it be peacefully or hostilely? We don’t know but if you look at our own history a civilization or group that comes into contact with a more advanced group the less does not last very long and will quickly be wiped out
Space is crazy huge it’s impossible to actually process it. Imagine if we were capable of space travel and found a planet that was still in their Stone Age time period and we helped them develop. So really it’s not crazy to think that spaceships at one point came down in the pre historic age or at any time.
hey Top5s! i have a cool article idea/ question. Why dont we become god? i mean take the first moon. Why dont we fly some of these creatures of ours to that moon, inject them in the ocean there, and see if it is able to live there? That way we can atleast find out if live on other planets is even possible or not.
The problem with alien life being out there is the distance. I read some comments below about how the universe is endless and while that is correct, life outside of our galaxy probably wont reach us. Given the fact that the maximum possible speed is the one of the light and even it isnt enough i dont expect to see alien life in the future
I know there is life somewhere else I don’t believe we are alone and if you think about it is common sense that we aren’t the only life in this galaxy or other galaxy’s sooner or later their going to let them self be known Well that my opinion I’m an open minded person I do believe an the super natural
The fallacy of the Fermi Theorem that EBE fans always overlook is, it guestimated a probable number of Earth-like planets in the then known universe – but it fails to take into account the odds of any kind of life ever developing on these planets, even if they did have running water, sustainable atmosphere and adequate gravity. I read somewhere that human life is the result of a series of statistical ‘bottlenecks’ ie evolutionary stages when we evolved and survived despite overwhelming odds dictating that we should have died out. In other words, if time was rolled back two billion years and life on Earth started to evolve again, this time it would be almost certain that we would never exist. Given this the prospect of any similar, sentient life ever developing in a similar way anywhere else are vanishingly small. To put it another way, it is as if those infinite monkeys in that famous thought experiment actually did manage to reproduce the complete works of Shakespeare at random, and the scientists are trying to find another copy of it which has also been produced at random, because if it could have happened once then it has to have happened again. Complete foolishness.
Salut, in data de 7 spre 8 octombrie, atat eu cat si familia mea am trecut prin miste momente ingrozitoare. O anexa invecinata plina cu lemne a izbucnita in flacari iar blocul in care eu locuiam a fost si el mistiuit la randul lui de flacari. Daca poti sa imi dai share pe orice retea de socializare pentru a imi fi auzita povestea, atat eu cat si familia mea iti vom fi vesnic recunoscatori! m.facebook.com/story.php?story_fbid=1701733323285429&id=100003463322613
I don’t think we have to look far for alien life. It is all around us on this planet. We just so happen to be fortunate enough to live on a planet that can sustain life brought here. Such as interstellar life from comets, other planets such as mars, or things like cephalopods who’s ancestors could very well not have been simple chemicals arriving on this planet but already evolved frozen organisms. Knowing that as well I wouldn’t doubt we have had some intelligent visitors genetically altering species over the millions of years due to the right conditions for sustainable life for scientific observations. Some such stories goes back to some of the oldest recorded history talking about visitors genetically splicing their dna with coexisting species here on earth and once such creation is humans as we know it. The universe is a bizarre place, and with our just now developed and in some ways elementary scientific way of trying to understand it, will only continue to get more bizarre and puzzling. We can not even observe the majority of it but it would be interesting to find similar life forms even intelligent ones wandering about the small dimension of space we occupy simply to observe for ourselves and further our own understanding of what could potentially be out there.
I personally dont think that out of the infinite amount of planets/solar systems/galaxies in the universe we cant be the ONLY planet in the universe with life we’re not that special 💀. Alien life probably are nothing like humans or any life we know of they might not need water or food or even oxygen. Maybe we’re isolated and other galaxies’ might have every planet full of life that can travel between planets a socialize (kind of like Futurama) that part probably isn’t true (though it can be cause nothing’s impossible😉) but its fun to imagine. But we definitely cant be the ONLY planet in the whole universe with life.