2020-07-10

8 Hubble Space Telescope universe images you have never seen before! under

By yqqlm yqqlm

NGC 5033

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Hot stuff

Spiral galaxyNGC 5033 is very similar to our Milky Way. It is roughly the same size, spans about 100,000 light-years, and its core is a supermassive black hole that weighs about 10 million to billions of solar mass. However, unlike the Milky Way, the central black hole in NGC 5033 is not docile. Instead, it is surrounded by a rotating disk of gas and dust, moving so fast that it overheats. This causes it to emit bright light, forming a so-called active galaxy core.

Over the years, Hubble discovered hundreds of supermassive black holes by observing the dust movement in the center of the galaxy. If the material moves quickly, there must be a black hole that holds it in place, otherwise it will accelerate into the rest of the galaxy.

Hubble observations of the centers of massive galaxies indicate that there are supermassive black holesin the center of almost every galaxy. Scientists now believe that supermassive black holes play a vital role in shaping galaxies.

Fomalhaut

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The lonely star

Before the Hubble launch, the only planet we knew was a planet in the solar system. Today, we know that thousands of exoplanets orbit other stars.

Hubble has always been at the forefront of studying exoplanets. Although this is not a good tool to find them, because the field of view is too small, only a small window can search the vast sky, but what can be done is a detailed follow-up observation.

A rare case of Hubble’s discovery of the planet is the Fomalhaut of the North Star of the star. The star is surrounded by a circle of dust that stretches for about 20 billion kilometers, which is three times that of Pluto.

Such a ring is usually formed by a planet bringing dust into a specific orbit. In order to track the world, Hubble repeatedly took images of the system over several years. After comparing the images, astronomers found a bright spot moving slowly around the disk. It is a planet and the first planet to be imaged directly under visible light.

Gravity lens

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Cosmic lens

The Milky Way galaxy cluster is one of the heaviest objects in the universe. They are so heavy that they distort the structure of space and time, so that the light bends as it passes. Under appropriate conditions, this curvature can act as a lens, magnifying the galaxy located billions of light years later. This phenomenon is called a gravitational lens.

In the image on the left above, you can see that multiple bright blue galaxies have been lensed, although this process twists them into an arc. These images are essential for tracking dark matter, one of the most mysterious matter in the universe.

Most of the matter in the cluster is dark matter. We don’t know what dark matter is, but through Hubble’s observation of the lens, we can know how it is distributed and how dark matter has evolved throughout the history of the universe.

After studying the patterns of distorted galaxies, astronomers created a dark matter map within the cluster. As shown on the right, dark matter is blue.

Galaxies colliding

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When galaxies collide

The collision of two galaxies sounds dangerous to the objects involved, even if not fatal . In fact, it is these outstanding clusters of galaxies that have contributed to the growth and development of stars. When they collide together, or even just pass by, the resulting chaos stirs the gas in them, forming knot-like matter, which continues to form a nursery of stars.

Here, we see two independent galaxies, the closest distance they passed through was close enough that they caused deformation of their spiral arms. The Hubble Telescope’s UV camera has been able to find out that hot young stars are forming a busy area. These are bright blue clumps gathered around the twisted spiral arms of the Milky Way, and the interaction between them will produce maximum turbulence.

The Hubble telescope has unparalleled clarity and ultraviolet observation ability, which is one of the key ways to distinguish it from the corresponding telescope on the earth. Our atmosphere absorbs most of the ultraviolet light that reaches our planet, so Hubble’s view above the atmosphere provides us with a unique view of the universe under these wavelengths of light.

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