5 Questions About Earth and Space Answered by Astronomers

As humanity, we continue to increase our knowledge about our planet and the universe with each passing day. This is the basis of our development. our endless curiosity lies.

Here is a website where those who have questions about the universe, even if they are not scientists, get answers directly from astronomers, aiming to satisfy our curiosity. led by Cornell University researchers We have compiled 5 interesting questions and answers from readers of that site.

1. What happens if a supermassive black hole approaches our planet?

Considering that the mass of this type of black hole is equivalent to one million solar masses, when it comes close to us a thousand light years, our Solar System Orbiting around the Milky Way We begin to notice that some changes are taking place.

When the distance gets smaller and the distance is reduced to a few hundred light years, we see that the orbits of all the planets in the Solar System change. The world is also affected by this change and in a short time either we freeze completely or we evaporate and perish.

What determines this is our approach to or away from the Sun after the orbital change. In the next or We head to the sun and perish or ejected from the Solar System and orbit around the new black hole.

The third possibility is directly our being drawn into the black hole. If this third situation occurs, we will be shattered by the spaghetti effect as we approach the black hole.

2. How does your weight change as you approach the center of the Earth?

Contrary to popular belief, it gradually decreases. It is a well-known fact that your weight decreases as you move away from the Earth, so when the opposite happens and you get closer to the center, the weight is expected to increase. But the distance from the center of mass isn’t the only thing that determines weight; The masses of the substances between you and the center are also effective.

In this situation, when you come to the center point, since your distance is zero, the diameter of the distance you are at becomes zero, and therefore there is no mass between you and the center. This causes the gravitational effect to be reset. That’s why your weight disappears.

3. Is it possible to buy stars?

The answer to this interesting question is “no”. You cannot buy and name stars. The only organization authorized to name stars is the International Astronomical Union. But nowadays there are scam companies that claim to sell stars and people who lose their money by believing them.

Even these people by communicating with the institutions engaged in space exploration They ask for a description of its place in the sky, saying that they have bought a star but do not know where to find it.

4. What is a white hole?

Most people know about a black hole, but not many have heard of a white hole. In white holes, which are the opposite of black holes; substances do not enter, on the contrary, it is thrown out. In addition, matter cannot come out of black holes, and matter cannot enter through white holes.

But most scientists believe that white holes it is physically impossible and therefore thinks it cannot exist.

5. In what is the universe expanding?

This is one of the crucial questions about the universe. If our universe is expanding all the time, what’s in the areas where it’s expanding? What is it expanding into? If we took a step outside the boundaries of the universe, what would we see in this area where it would soon expand?

Dave Rothstein replied, “What we think is the expansion of the universe is actually as if the spaces between galaxies are being pulled from all sides. consists of yawning. Since our universe is infinitely large, it continues to be infinitely large even when its texture is stretched; so its size doesn’t actually change at all, so it doesn’t actually expand.

But if our universe isn’t infinitely large, then it’s possible that there’s a region into which we’re expanding. However, since we did not have a chance to observe this, It’s also impossible for us to answer scientifically.”