Do you know how many stars there are in the universe? The answer is MANY! Our sun is one of about 100 billion stars in our galaxy(星系), the Milky Way(银河系). But the Milky Way is just one of billions of galaxies
Multiply that by all the seconds in one year, and you get 5.8 trillion miles (9.5 trillion kilometers). Just for reference, Earth is about eight light minutes from the Sun. A trip at light speed to the very edge of our solar system – the farthest reaches of the Oort Cloud, a ...
What you’re seeing is a portion of the Milky Way, our home galaxy, which measures 100,000 light-years in diameter. (A light-year is the distance light travels in one year — almost 6 trillion miles, or 9.5 trillion kilometers.) Its core hosts a supermassive black hole — a giant gr...
Do you know how many stars there are in the universe?The answer is MANY! Our sun is one of about 100 billion stars in our galaxy, the Milky Way.But the Milky Way is just one of billions of galaxies that we know about! Some other scientists say there are 2,000,000,000,000,000,00...
The Milky Way Galaxy Photo courtesy of NASA It's a dark, clear, moonless night. You look up into the sky. You see thousands of stars arranged in patterns or constellations. The light from these stars has traveled great distances to reach Earth. But what are stars? How far away are th...
of the Milky- May than we are. Because of space dust we can't see it with the naked eye (肉眼). It's about 100 times the size of our Sun and10 000 000 times as bright as the Sun~ The closest star to the Earth is the Sun! The Sun is about 93 million miles away. We ...
How far is Deneb from Earth? How many light years away can the Hubble Telescope see? How far away is Venus from the sun in miles? How far away from Earth is the Andromeda Galaxy planetary system? How long would it take you to reach the nearest star to Earth?
The core of the Milky Way in the night sky. Photo by Trevor Jones How big is the universe in miles?Ourbest guessis 540 sextillion (or 54 followed by 22 zeros) miles How old is the universe?Astronomershave determined that our observable universe is 13.7 billion years old. ...
How Many Stars Are in the Milky Way? Exploring the Milky Way From Inside the Galaxy The Milky Way, our celestial home, has fascinated astronomers for centuries. It is a vast galaxy, a large system that includes stars, gas (predominantly hydrogen), dust and dark matter, all bound together...
A light year is the distance light can travel in one year, or about 6 trillion miles. So the baby planet may seem far, but compared with many other distant stars and galaxies in our universe, it's actually very close. Our galaxy, the Milky Way, is 100,000 light years wide.Before ...