In this video scientists need to give answers to something that has been discovered and it is considered to be a mystery. Suddenly a massive star disappeared !
Let’s start with our topic that has to do with a Unique star.

When we look up in the sky, we can see the Sun, the Moon and the Stars and as we have mentioned before the stars are astronomical objects consisting of a luminous spheroid of plasma held together by their own gravity. Consequently, the study of the birth, life, and deat* of stars is central to the field of astronomy and what we know is that they are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. Stars are the most widely recognized astronomical objects, and represent the most fundamental building blocks of galaxies. Imagine that our galaxy, the Milky Way, contains an estimated 300 billion stars and we are able to perceive with the naked eye, around 2.000-2.500 stars. It is worth mentioning that stars have life cycles based on their initial mass. For instance the larger a star, the shorter its life, although most massive stars live for billions of years.
We do know that Stars form in huge clouds of gas and dust. Gravity causes these clouds to contract thus drawing the gas closer. As these materials accumulate in the center, density raises and pressure increases. This causes the matter to heat up and glow while the mass increases. Temperatures and pressure continually grow until hydrogen can be fused. The heat generated by this nuclear fusion causes the gas to expand and when hydrostatic equilibrium is reached, the star is born and we are able to observe and analyze them. One of these stars, is known as Kinman Dwarf or PHL 293B. The reason why we are going to pay attention to this specific star, is because something extraordinary happened…and our job here is to give further details as what happened seem to be difficult to comprehend.
So let’s take things from the beginning and let the journey begin.
Before we continue with our exploration to PHL 293B star, be sure to like or dislike the video so that we can continue improve and make these videos better for you the viewer. Plus, be sure to subscribe to the channel so that you don’t miss any of our weekly videos!
The PHL 293B star belongs to the dwarf galaxy in the constellation of Aquarius and it lies approximately 75 million light-years away. Let’s see on a closer look this galaxy.
A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars. Dwarf galaxies' formation and activity are thought to be heavily influenced by interactions with larger galaxies. Astronomers identify numerous types of dwarf galaxies, based on their shape and composition. A good example of a dwarf galaxy is the Large Magellanic Cloud, located about 160,000 light-years from Earth. It contains about 1/10th the mass of the Milky Way, and has about 10% of its stars. Two other dwarf galaxies are even closer to the Milky Way, and have been captured by our galaxy’s gravity. Other dwarf galaxies are just remnants that have been torn apart by the Milky Way’s gravity, and are currently being incorporated into the structure of our galaxy.
The massive star called PHL 293B, is one of the brightest and largest star known until today and many astrophysics claim that we may have detected one of the most massive stars of the local Universe going gently into the night.
In this point we need to mention that massive stars are among the most important sources of ionizing photons and chemical elements, producing a significant proportion of the elements currently present in the Universe.
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Credits: Ron Miller
Credits: Nasa/Shutterstock/Storyblocks/Elon Musk/SpaceX/Esa
Credits: Flickr

Video Chapters:
00:00 Introduction
00:59 Discovery of the Star
03:18 Dwarf Planets
04:20 Massive Star PHL293B
05:56 Disappearance of PHL293B
07:17 Potential Explanations
11:05 Conclusion

#insanecuriosity #star #disappeared

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