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Earth is the only planet with water, the universe is in a static state . the myths about the universe that many people still believe.

Mistakes about the universe

Unlike the culture of art and science, it changes and changes every day. Therefore, there are correct scientific studies at this time, but in later stages it becomes not very accurate.

However, there are still many "conservative" people who believe in old research. Let's review some of the myths about the cosmic science of the 90s but still many people believe.

1. Earth is the only planet with water

Many believe that Earth is the only planet that exists. But scientists have shown evidence that the Moon and some planets contain a lot of water.

Data from NASA space satellites from 1995 to 2003 show that Jupiter's moon Europa has a deep, wide ocean with a surface of 80 to 170 km of ice. If 'gathering' all countries on Earth are only half to one-third of the volume of water here, and if ' gathering' all countries on Europa will be a water ball radius of 877km.

Besides finding the largest moon on Jupiter's moon, experts also have evidence of the occurrence of water on Saturn's Moon - Enceladus.

2. The universe is in a static state

Until the final years of the 1990s, scientists still thought that gravity could reduce the expansion of the universe. Recently, however, scientists have discovered that our universe is growing, at a very fast rate.

Based on observations of distant supernovae, three physicists Saul Perlmutter, Brian P. Schmidt and Adam G. Riess have shown the accelerated expansion of the universe through the discovery of the cosmological constant, dark energy .

These three physicists have unraveled a mysterious angle of the universe that still contains a lot of things we don't know. Many big problems (dark energy, dark matter, .) are still waiting for future solutions.

3. Pluto (Pluto) is a planet

Many believe that Pluto is the 9th planet in the Solar System. But after studying, the experts found that Pluto is much smaller in size than other planets , and has a strange trajectory. Besides, they also discovered Pluto and its satellites are actually only large bodies belonging to the Kuiper belt.

Along with Kuiper, the scientific community discovered a lot of celestial bodies that grew bigger, just a little smaller than Pluto. Finally in 2005, an object named Eris was discovered to be about the size of Pluto.

So if Pluto is a planet, Eris must also be a planet, and may find countless more planets. Since then scientists decided that Pluto became an 'asteroid' .

4. Black holes do not appear near 'little old' stars

According to Peter Galison, the Hubble telescope has changed everything, when through this lens, a giant black hole is seen in the center of the Milky Way .

In the 90s, black holes were not too familiar concepts. Many people at the time believed that the Milky Way was the only place where black holes and black holes appeared only around the oldest, oldest stars.

But the truth is not that, almost in the center of any Milky Way, there are black holes and the emergence of new, "long-lived" stars that are not related to the existence of black holes.

Recently, experts also discovered that the "neighbor" Milky Way galaxy right next to us, named M87, also has a central black hole with a mass equivalent to billions of Sun.

5. The universe exists only 9 planets

In the 1990s, many scientists affirmed that our vast universe only existed 9 planets. But according to scientist Peter Galison, one of the greatest discoveries in the past 20 years is that we discover the existence of billions of small planets around the stars.

Just in the immediate Milky Way, we also have more than 100 billion planets of different sizes , and there are many planets that look like Earth. This finding promises that, one day, we will be able to find extraterrestrial life.