Nothing is standing or stationary.
The sun is travelling through space at an amazing 792,000 km/h around the enormous core as you read this, while the Earth is spinning about its own axis as it orbits the sun, which is moving through space at a staggering 2.1 million km/h.
You might think about that as you read this with your body in a still position. However, everything in the cosmos is in motion, including the Milky Way Galaxy and our planet Earth, which orbits the sun at a speed of about 1700 km/h.
The moons of each planet in the solar system likewise travel through space. Actually, the Earth needs to move at a speed of about 30 km/s in order to maintain a stable orbit. Mercury and Venus, the two innermost planets in our solar system, move through space more quickly than Mars and the outer planets, which move more slowly.
But try to think larger and better. The Sun is at the center of our solar system, yet it is also moving across space at an incredible rate of speed.
If we think even bigger, we will see that everything that is always moving in the universe, including stars, gas clouds, planets, black holes, and even the massive dark matter, is moving, including our enormous Milky Way galaxy.
Similar to how Earth rotates around the Sun, which orbits the galactic center in an elliptic trajectory as seen from Earth (2500 light-years away). About every 225 million years, a revolution is completed. It’s called a galactic year right now.
It is predicted that since the Sun and Earth came into being, 20 galactic years have passed, which means that we ended 20 successful revolutions orbiting the galactic center. However, if we relate detailed human history to our movement through the universe, we would understand we hardly moved in our galactic path.
What about the Speed, though? The Star (Sun) must move at the astounding speed of 792,000 km/h in order to complete a successful revolution around the galactic center. All of the planets in our solar system, including Earth, follow the sun at this obscene rate.
Light moves at a fascinating 1.09 BILLION km/h, in contrast.
However, the galaxy also moves across space, propelled by the gravitational pull of other gigantic objects in the cosmos, in addition to moons, planets, and in this case, our sun.
It turns out that our galaxy is currently being thrown toward a specific location in the cosmos by other big galaxies and clusters nearby.
But hold for a second, with regard to WHAT are we actually computing motion throughout the universe? Researchers can estimate our speed relative to the Milky Way Galaxy’s heart when determining how quickly we are traveling around it.
The Milky Way Galaxy, on the other hand, flows across space and is neither immobile nor fixed. Then, is there anything whose motion it may be likened to?
For a long period time, astronomers and scientists were not able to answer any questions like this. We can compare our galaxy’s speed with other galaxies, but all the other galaxies travel through the universe just as the Milky Way Galaxy does.
In order to answer this mystery, astronomers and scientists point towards the CBR (Cosmic Background Radiation) and the Big Bang.
The Big Bang theory postulates that the early cosmos was a very hot place and that as it grew, the gas within it cooled. This is according to N.A.S.A. The “Cosmic Microwave Background,” or CMB, which is the heat left over from the Big Bang, should therefore be abundant throughout the universe. 13.7 billion years ago, the Cosmic Microwave Background (CMB) radiation was created.
The CBR implies experts who have a point of comparison for the entire universe, in comparison to which we can determine and quantify our motion.
Astronomers must subtract the speed of Earth around the Sun and the Sun around the Milky Way’s center from the movement measured in comparison to the Cosmic Microwave Background in order to determine how quickly we are moving through the universe (CBR).
This indicates that the Milky Way Galaxy is moving through space at an incredible speed of 2.1 million kilometers per hour, exactly where the so-called Great Attractor is located in the direction of the Virgo and Leo constellations.
Soucre: blog.thespaceacademy.org
