The civilization around the world.

  A planet is a large object such as Venus or Earth that orbits a star. Planets are smaller than stars, and they do not produce light. Jupiter is the biggest planet in the Solar System. Planets are shaped like a slightly squashed ball (called a spheroid). Objects that orbit planets are called satellites. There are more planets than stars in our galaxy. The current count orbiting our star: eight. The inner, rocky planets are Mercury, Venus, Earth and Mars. The earth has conditions that support life . It is neither too hot nor too cold. It has both water and air, which are both indispensable for life . Presence of oxygen in the air in an appropriate proportion supports life .

  A star is an astronomical object consisting of a luminous spheroid of plasma held together by its own gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night, but due to their immense distance from Earth they appear as fixed points of light in the sky.   star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. ... Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements. The Sun is the closest star to Earth. SUPER NOVA A supernova — specifically, a core-collapse supernova — can only occur when a star many times more massive than our Sun runs out of nuclear fuel to burn in its core. ... When our Sun runs out of hydrogen fuel in the core, it will contract and heat up to a sufficient degree that helium fusion can begin.

  The Milky Way is the galaxy that includes our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.   The Milky Way is a large barred spiral galaxy . All the stars we see in the night sky are in our own Milky Way Galaxy . Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.

  A  galaxy  is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity. ... It's a small part of the Milky Way  Galaxy . A  galaxy  is a huge collection of gas, dust, and billions of stars and their solar systems. A  galaxy  is held together by gravity. The best estimate from a 1999 study set that number at about 125 billion  galaxies , and a 2013 study indicated that there are 225 billion  galaxies  in the observable  universe . In 2016, that number was upped to 2 trillion, in large part because a new analysis included all the tiny, fluffy  galaxies  in the early  universe .

  A comb jelly. The evolutionary history of the comb jelly has revealed surprising clues about Earth's first animal . Despite going extinct over 400 million years ago, ancient comb jellies are still blowing scientists away. Long thought of as entirely soft-bodied creatures — like their modern counterparts — these predatory marine animals may have had hard, skeleton-like parts, according to a study published in Science Advances today. All comb jellies are meat-eaters. They swim in surface waters using sticky tentacles to catch tiny creatures in the soup of plankton that the sea supports. Most comb jelly individuals are both male and female. ... Unlike other jellyfish , comb jellies do not sting people so they are safe to swim with and to handle .

  Leech has 32 brains. A leech's internal structure is segregated into 32 separate segments, and each of these segments has its own brain. In medicine , particularly plastic and reconstructive surgery, leeches may be used to help improve blood flow in an area of tissue or a skin flap that has poor blood circulation. Leeches do this by removing clotted blood (congested blood) from delicate areas, such as underneath a flap of skin or on a finger or toe.

  Kepler - 22b has an estimated mass of 36 Earth masses and a radius of 2.38 Earth radii, making it a "super-Earth." It is an ocean planet instead of having a rocky, Earth-like composition. ... Liquid water is a key ingredient to life, so planets found within this zone are more likely to be habitable worlds. scientists say that this planet contains life on it.

  The fiber in  carrots  can help keep blood sugar levels under control. And they're loaded with vitamin A and beta-carotene, which there's evidence to suggest can lower your diabetes risk. They can strengthen your bones.  Carrots  have calcium and vitamin K, both of which are important for bone health.

 Which is your favorite colour? The colours says the characters of people living around the world so text your favorite colour on the comments. 

 This is the world. We are living now from the past 3100 BC .the civilization started on the earth and  now its 2021 it is the 21 century . By then and now humans are developing the world . Yes! We all need to agree that excep the animals in our planet .  Because they don't know what is earth,world,civilization. They only think about their life that how to work how to get food how to survive and to protect them self from danger. What if the animals know these things 🤔 and  They communicate to each other .then the life  And civilization is different in earth 🌎 . How it will be ? On next.>