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Clone Force 99 - Star Wars - Hoodies

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What is space and how does it exist?

From Earth's perspective, outer space is an area about 100 kilometers (60 miles) outside the planet where there isn't enough air to breathe or to scatter light. In that area, the blue turns black because the oxygen molecules aren't enough to make the sky blue.

What's more, space is a vacuum, which means that sound can't travel because the molecules aren't close enough to carry sound between them. However, that is not to say that space is empty. Space contains gas, dust, and other parts of matter that float around "empty" regions of the universe, while densely populated regions may contain planets, stars, and galaxies.

No one knows exactly how big space is. The difficulties arise from what we can see in detectors, which measure distances in space in “light years”, which represent the distance it takes light to travel in a year (about 5 0.8 trillion miles, or 9.5 trillion kilometers).

From the light seen in our telescopes, we've enumerated galaxies so far away that they've almost gone back to the Big Bang - the explosion that started our universe about 13.8 billion years ago. That means we can "see" into space at a distance of 13.8 billion light-years. However, astronomers are not sure if our universe is the only one that exists. This means that the space can be much larger than what we see.

Radiation is invisible to the human eye

Most of the space is relatively empty, meaning there is only a little dust and air circulating within it. This means that when humans send a spacecraft to a distant planet, the object will not experience "resistance" in the same way as an airplane when it flies through space.

The vacuum in space, or on the moon, for example, is one reason the Apollo lunar landers look so angular - like a spider. Because the spacecraft is designed to work in airless areas, it doesn't need smooth edges or an aerodynamic shape. While space may seem empty to the human eye, studies have shown that there are forms of radiation emitted through the universe. In our Solar System, the solar wind - composed of plasma and other particles from the Sun - penetrates the planets and sometimes causes auroras near the Earth's poles. Cosmic rays also pass through nearby regions, resulting from supernova explosions (supernovas) outside the Solar System.

In fact, the universe is overflowing with the cosmic microwave background, which can be understood as the remnants of the explosion that formed our universe (often called the Big Bang). The CMB - which is best seen in the microwave range - has exposed the oldest radiation that our instruments can catch.

A great feature of space that we have yet to see or understand. it is the hypothetical presence of dark matter and dark energy, which is a form of matter and energy that can only be detected through its influence on other objects. As the universe is expanding and expanding faster and faster, that expansion is considered an important piece of evidence for dark matter. Another feature is gravitational lensing that occurs when light bends around a star from a very distant background object.

Stars, planets, asteroids, and comets

Radiation is one of the characteristics of space, but the universe is also filled with objects that we can see. The objects most familiar to humans are planets and stars.

Stars (like the Sun) are giant balls of gas that emit their own radiation. They can range from red giants to lower-temperature things like white dwarfs, the remains of a supernova, or a stellar explosion that occurs when a massive star runs out of fuel to burn. on fire. These explosions scattered elements into the universe, and that's why we see elements like iron in the universe. Star explosions can also increase the number of super-dense objects called neutron stars. If these neutron stars emit pulses of radiation, they are called pulsars.

Planets are objects defined after a 2006 vote when astronomers debated whether Pluto could be considered a planet. At that time, the International Astronomical Union (IAU - the governing body at Earth for these decisions) ruled that the planet (in the Solar System) was a celestial body orbiting the Sun, has enough mass to form a nearly circular shape, and must clear debris from its orbit. By this definition, Pluto and similar objects are considered "dwarf planets".

The definition of extrasolar planets has yet to be confirmed by the IAU, but astronomers basically understand them to be objects similar to planets around us. The first exoplanet was found in 1992 (in the constellation Pegasus - Pegasus) and since then, hundreds of exoplanets have been confirmed - and with thousands of more candidates under consideration.

Asteroids are rocks that are not large enough to be dwarf planets. In our solar system, they are considered leftovers when the surrounding planets formed, and they are most concentrated in a belt between Mars and Jupiter. Other younger solar systems also have asteroid collections, but if planets have not yet formed, astronomers may also sometimes use the term "protoplanets" to refer to Planets that are in the process of forming.

In our solar system, comets (sometimes referred to as dirty snowballs) are considered objects that originate from a large collection of icy objects called the "Oort Clouds". As a comet approaches the sun, the heat from its star causes the ice to melt and the dust to be impacted, creating a stream drawn from the comet. The ancients often associated comets with destruction or a great change on Earth, but it started with the discovery of Halley's comet and its connection to the "cycle" or comet phenomenon. back, has shown that it is just a common phenomenon in the solar system.

Galaxy and Black Hole

One of the largest cosmic structures we can see are galaxies, which consist mainly of huge numbers of stars. Our galaxy is called the "Milky Way", and is said to have a "spiral" shape. There are many types of galaxies, from spirals to ellipses to irregular shapes, and their shapes can change as they approach other objects or as the stars within them grow old.

Galaxies often have a supermassive black hole at their center, which is visible only through the radiation each black hole emits as well as its gravitational interactions with other objects. If a black hole is very active with a lot of falling matter, it will produce a huge amount of radiation. This type of galactic object is called a "quasar" (it's just one of many similar objects).

Smaller black holes can also form from the gravitational collapse of massive stars, forming a singularity from which nothing can escape - not even light, which is why hence the name "black hole".

Once thought to be a theoretical object, scientists have now found evidence of black holes in the universe. No one is sure what lies inside a black hole, or what will happen to a person or object when dropped inside.

Groups containing large numbers of galaxies can form to form galaxy clusters (or clusters of galaxies) and may contain up to hundreds or thousands of galaxies bound together by gravity.

What is the difference between space and time?

Space, as we experience it, is simply three-dimensional (flat) Euklidean space. There's a flat area in which parallel lines never cross. Consider your kitchen table's two-dimensional space: this room is flat if your table is new. But the surface of a sphere, which is also a two-dimensional space, is not flat. In a similar way, three-dimensional space can be curved (although this is difficult/unthinkable).

Time as we experience it is simply linearly progressive. You can combine space and time to make a four-dimensional space-time, one of which is time-like. The current theory of relativity says that this four-dimensional space-time is not always exactly flat and that any curvature of space-time is equivalent to a force. Any form of energy (and rest mass energy being the most compact such form) warps space-time and thus produces a force - called gravity.

This space curve affects both space and time, so gravity also affects clocks, etc... For weak forces (anything we experience as humans), the effect curvature is extremely small.

Interesting things about space

There are likely to be more than 500 million planets in the galaxy that are habitable. Planets that can meet the minimum needs for life require an acceptable temperature, water exists in two forms of liquid and gases, there are combinations of chemicals that are there to build a life.

Planets can meet the minimum needs for life. According to scientists, it is likely that there are more than 500 million planets in the galaxy that can meet those needs. They call planets within a star's habitable zone "Goldilocks Planets." If this is correct, the potential for extraterrestrial life is immense.

All the galaxies, planets, and stars make up only 4% of the universe. All that we see in space is only 4% of the universe, the remaining 96% we cannot see. We cannot even determine what the rest of the universe is. According to some physicists, this phenomenon is referred to as dark energy or dark matter. With mathematical formulas, we can estimate the gravity of these entities, but those are just theories, there is no way. to decipher them. It is still a mystery that challenges scientists.

It takes the Solar System 225 million years to orbit the Milky Way

The Solar System is about 28,000 light-years from the center of the Milky Way. The Solar System is about 28,000 light-years from the center of the Milky Way.

The Milky Way is a spiral galaxy that resembles a garland and is always rotating. It is spinning at about 168 mph (269km/s) or about 600,000 mph (960,000km/h). The Solar System is about 28,000 light-years from the center of the Milky Way, and it takes about 225 million years to orbit the Milky Way.

Is there a "cannibal universe"? The definition of "cannibal universe" is to refers to the galaxy colliding with a certain star or planet and "swallowing them". The Andromeda Galaxy (or Andromeda Galaxy) is the closest spiral galaxy to our own Milky Way galaxy ever suspected of becoming a "predator" that has "swallowed up" the smaller and more distant galaxy. close to it.

Days on Earth begin to get longer. By convention, a day is equal to the time it takes the Earth to rotate on its axis. The average day on Earth increases by a few milliseconds per year, but Earth's rotation is affected by many factors including the gravitational effects of the Moon. In addition, disasters such as earthquakes or tsunamis can also affect the rotation of the Earth's axis and they can add or remove the few milliseconds that the day on Earth increases each year.

A good example is a devastating earthquake in Japan in 2011 that shortened our days by 1.8 million milliseconds. Since the Earth's day is continuously extended, it is estimated that the dinosaur period still exists, the Earth's day is only about 22 hours.

Sunlight reaching your face is more than 30,000 years old. Sunlight must endure a lengthy trip to reach Earth. So far, the Sun is estimated to be 4.6 billion years old and is going through its final 5 billion years before burning up helium, becoming a red giant. After about 1 billion years as a red star, the Sun will shrink to a white dwarf. The sun's rays take about 8 minutes to make the journey through 93 million miles (equivalent to 150 million km) to Earth. Even so, these rays were formed more than 30,000 years ago at the Sun's core through an intense process of nuclear fusion in which the Sun consumed helium and hydrogen.

Possibility of more than one universe. The view that we live in the universe which is one of many existing universes is becoming more and more accepted. It is developed from the everlasting inflation idea. This theory holds that after the Big Bang (the explosion that gave birth to the universe), space and time expanded at different rates and in different places. This could lead to the possibility of separate bubble universes. Many scientists have even hypothesized the existence of parallel universes.

Space products are available on Printerval.com

Printerval.com is always stocked with items such as T-shirts, Tanktops, Hoodies, or other products such as Hats, Mugs, available in a variety of colors and sizes to suit the preferences of each person.

In addition to the variety of sizes and colors, the image designs on the products are also diverse, especially the designs of artists around the world, showing the uniqueness of each product. on Printerval. Space theme designs are for those who love to explore the universe or simply those who love Printerval products.