Interesting Facts of Milky Way Galaxy

The solar system has few or no moons. They are relatively small. Mercury is the smallest and closest to the sun. Its orbit is about three Earth months. Venus is the hottest planet, reaching temperatures up to 867 degrees Fahrenheit. This is due to its carbon dioxide atmosphere and extensive lava flows. Earth is a world of water. Its water systems create a unique environment capable of sustaining life. Mars, the last terrestrial planet, might have supported life about 3.7 billion years ago. It had a watery surface and moist atmosphere. Beyond the terrestrial planets are the Jovian planets. They include gas giants like Jupiter and Saturn and ice giants like Uranus and Neptune. The gas giants are made mostly of helium and hydrogen. The ice giants also contain rock, ice, and a liquid mixture of water, methane, and ammonia. All four Jovian planets have multiple moons, ring systems, no solid surfaces, and are immense. Jupiter is the largest planet in the solar system. Saturn has wide, thin rings. Uranus is bigger and famous for rotating on its side. Neptune is the outermost and one of the coldest planets. Orbiting the terrestrial planets is the asteroid belt. It is a flat disc of rocky objects left from the solar system's formation. The Kuiper Belt is another disc of space debris further out and orbits the Jovian planets. It is home to dwarf planets like Pluto and birthplace of many comets. The Oort Cloud is a vast, spherical collection of icy debris beyond the Kuiper Belt. It marks the edge of the solar system. The solar system's configuration and celestial objects revolve around a life-giving star, making it a special place to call home.

RN's rings are huge. Some fragments are as big as mountains. But our Sun is even bigger. Earth is tiny compared to the Sun. Earth looks small from the moon and Mars. Earth also looks small from behind Saturn's rings and beyond Neptune. A billion is a big number. It's over 31 years. Earth is terrifyingly small compared to the Sun. Mars shows how tiny the Sun is. There are more stars than grains of sand on Earth. Some stars are even bigger than the Sun. VY Canis Majoris is 2,000 times bigger than the Sun. But galaxies are even bigger. The Milky Way is about the size of the United States. It's 100,000 light-years wide. That's 621 quadrillion 371 trillion 192 billion 237 million three hundred thirty-three thousand eight hundred ninety miles. You live in a tiny part of the Milky Way. NGC 674 is twice as wide as the Milky Way. It stretches over two hundred thousand light-years. There are thousands of galaxies in this picture. Each galaxy has millions or billions of stars. Some formed 11 billion years ago after the Big Bang. This is just a small part of the universe. So don't worry about small things like canceled shows or early Christmas music. Earth is your home.

Because of gravity, orbital paths constantly rotate. After two days, the path resembles a spirograph pattern. Black holes snack on stars, causing them to lose mass and grow in size. The star's orbit becomes more circular. Scientists think it could eventually spiral away and turn into a Jupiter-sized planet, but it may never happen due to the immense timescale. There are countless black holes in the Milky Way and beyond. Telescopes may not be strong enough to spot them. Most galaxies have supermassive black holes, either billions of times heavier than the sun or just three times its mass. The closest black hole is 1,000 light years away, visible with the naked eye. Scientists found it by observing a star behaving oddly. The hungriest black hole weighs as much as 34 billion suns and devouring one sun per day. Sometimes, black holes even consume others nearby. Thankfully, Earth is safe from their destruction. The largest black hole couldn't come closer to us than the sun. In rare cases, a passing black hole could impact Earth's orbit. In theory, anything can become a black hole, but they form from the collapse of supermassive stars. Thus, the sun will never become one.