Journey to search for 'invisible' galaxies in the universe

Finding bands of "invisible" dwarf galaxies can help astronomers find the origin of the universe.

In the vast universe there are countless galaxies and Earth where we live in one of those galaxies.

Besides the kind of sight that can be seen with eyes and specialized devices, there are also invisible galaxies in the universe - called the dwarf galaxy - dwarf galaxy.

In the vast universe there are countless galaxies.

Studying the galaxy promises to be very difficult, but if successful can bring valuable information that can help shape and shape the universe.

"Dwarf galaxies" - invisible galaxies

The dwarf galaxy is a small galaxy consisting of several billion stars , a small number compared to 200-400 billion stars of the Milky Way.

When you think about the Milky Way, you will immediately think of a giant light image in space.

But dwarf galaxies are not like that, they are small and very difficult to see, sometimes just a collection of small groups of stars.

Dwarf galaxies are small and very difficult to see.

Normally, stars in a galaxy are enclosed in a space consisting of dark matter - dark matter. It is unidentified matter and occupies about a quarter of the universe as a kind of "glue" , which helps to attach galaxies in space.

Sometimes, this cohesion becomes too strong, leading to "collide" - merging - when some galaxies join together. Basically, this phenomenon can be considered as a dwarf galaxy "eaten" by a larger galaxy.

When 2 galaxies merged.(Illustration).

In space, extremely small dwarf galaxies. Dwarf galaxies may be independent, but there are also some that act as satellites orbiting a large galaxy.

For example, the Large Magellan cloud - the star cluster has more than 30 billion stars. This is a satellite cloud of the galaxy, but sometimes it is classified as a dwarf galaxy.

The existence of dwarf galaxies plays an important role in space research

So far, all theories about dwarf galaxies are only hypotheses, since no dwarf galaxy has been previously "dissected" for research.

Scientists say that the conjecture and hypothesis of a dwarf galaxy is simple, but the validation and study of them is extremely difficult.

Dwarf galaxies always know how to "hide" in the universe, because stars in these dwarf galaxies have no brightness "enough".

Dwarf galaxies always know how to "hide" in the universe.

However, if the dwarf galaxy does not exist, the whole hypothesis of dark matter in space is "pouring into the river".

The most effective method to identify dwarf galaxies today is to evaluate the amount of dark matter surrounding stars. This amount of matter can be determined through the spatial dimension affected by the gravity of dwarf galaxies.

Gravity of dwarf galaxies is determined to be relatively large.

The gravity of dwarf galaxies is determined to be relatively large, so that the star's path to light can be broken. This is the basis for dwarf galaxies to be identified.

The discovery of a dwarf galaxy also has another contribution to space research, which is the dark matter that surrounds the galaxy.

Dark matter is the determining factor in the quantity and density of existing dwarf galaxies.

Dark matter is the determining factor in the quantity and density of dwarf galaxies.

There are currently two hypotheses about the nature of dark matter, which is hot and cold . The fact that dark matter is hot or cold will greatly affect the structure of the galaxy, the density of planets in the star and galaxy and the planet's rotation speed.

The fact that dark matter is hot or cold will greatly affect the structure of the galaxy.

Until now, the dissection of dwarf galaxies is still facing many difficulties. But if scientists find positive results after research, there will be a lot of important information that can be used, making the study of the origin of the universe fast and easier.