The universe is so immense; it is beyond the scope of our imagination. We occupy an extremely tiny part in the grand scale of things. Our solar system is the only place we have ever been in, and so the large part of space remains a mystery to us. Human life spans are extremely short as well. We have only been on this planet for a short amount of time, and also in comparison to the entire timeline of the universe, we will be gone in the blink of an eye. Yet in our short lives, we have tried to understand the world we live in. Our success at this attempt is varied and doubtful, but there are a few things that we now know for sure. A rough sketch of our solar history being one of them.
Brief Explanation Of Our Planet’s Solar System-
The planet Earth is a part of our solar system which consists of eight planets, a dwarf planet, and a sun. There are a lot of other smaller bodies hanging around in the space between the planets of the solar system as well. The four planets closest to the sun are the terrestrial planets, whereas the rest are Jovian, or gas planets; and the planets have their own satellites. The satellites revolve around their worlds in a parallel of the planets doing the same around the sun. We generally measure distances in space in Astronomical Units, Light Years, and Parsecs; each of whom has different uses.
Our Solar History.
Like everything else, our solar system formed at a certain point in time. Around 4.6 billion years ago, there was a cloud of dust in the nebula, which collapsed into itself and eventually formed the sun. Most of the matter got consumed by the sun, and from the remaining small amount of matter, our planets formed. After a lot of collision of matter and bodies, the planets got the shape and size we see them in. The gas planets and icy planets are farther away from the sun because they will not be able to exist stably near such a significant source of heat. Earth and the other terrestrial planets are able to bear the heat and energy coming off of it and benefit from it as well.
History Of Pluto In Our Solar System-
What do we count as a planet? The answer to this question keeps changing, and because of this, Pluto is no longer considered a planet. When people discovered it, we took it to be a planet, but in 2006, views changed, and now it is a dwarf planet. This is mostly because of its small size and inability to clear its neighborhood of other objects.
You would imagine that the planet closest to the sun will be the hottest, but it is not so. Mercury is closest of all, but Venus is actually much warmer because of its thick atmosphere that traps the sun’s heat. Pluto is small, that is common knowledge, but did you know, its diameter is less than that the width of United States.