Neptune’s Great Dark Spot
The Great Dark Spot in the southern atmosphere of Neptune was first discovered in 1989 by the Voyager 2 spacecraft. It was an incredibly large rotating storm system with winds of upto 1,500 miles per hour, the strongest winds recorded on any planet. How such powerful winds were discovered on a planet so far from the sun is still considered a mystery to this day.
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The Great Dark Spot in the southern atmosphere of Neptune was first discovered in 1989 by the Voyager 2 spacecraft. It was an incredibly large rotating storm system with winds of upto 1,500 miles per hour, the strongest winds recorded on any planet. How such powerful winds were discovered on a planet so far from the sun is still considered a mystery to this day.
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TrEs-2b
750 light years from Earth. TrEs-2b is the darkest planet ever found. It is the size of Jupiter & even blacker than coal. It absorbs almost 100% of light that falls on it.
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750 light years from Earth. TrEs-2b is the darkest planet ever found. It is the size of Jupiter & even blacker than coal. It absorbs almost 100% of light that falls on it.
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Whirlpool Galaxy (M51) ✨
The Whirlpool Galaxy (M51) was the very first celestial object to be identified as being spiral.
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The Whirlpool Galaxy (M51) was the very first celestial object to be identified as being spiral.
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SDSS 153636.22+044127.0
A binary black holes have been found sitting in the center of quasar SDSS 153636.22+044127.0 at a distance of about 4 billion light years from Earth.
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A binary black holes have been found sitting in the center of quasar SDSS 153636.22+044127.0 at a distance of about 4 billion light years from Earth.
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Bigger black holes are created when black holes and galaxies collide or two massive black holes collide.
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If you wan to know more about black hole, I have written a lot of thing about it which I have shared it on this channel with some video to help you understand more. If you want to read that here is the link for the series:
Part one:
• Introduction to Black Hole
Part two:
• Part 2.1:
Detecting Black Hole
• Part 2.2:
Detecting Gravitational Wave
Part 3:
• Part 3.1:
Birth of Black Hole: Formation of Black Hole
• Part 3.2:
Types of black hole
Part 4:
• The black hole information paradox
• Part 4.1:
The Black Hole Information Paradox Part One
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Part one:
• Introduction to Black Hole
Part two:
• Part 2.1:
Detecting Black Hole
• Part 2.2:
Detecting Gravitational Wave
Part 3:
• Part 3.1:
Birth of Black Hole: Formation of Black Hole
• Part 3.2:
Types of black hole
Part 4:
• The black hole information paradox
• Part 4.1:
The Black Hole Information Paradox Part One
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Teaspoon of neutron star
A neutron star is so dense that one teaspoon 🥄 (5 milliliters) of its material would have a mass over 5.5×10^12 kg, about 900 times the mass of the Great Pyramid of Giza.
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A neutron star is so dense that one teaspoon 🥄 (5 milliliters) of its material would have a mass over 5.5×10^12 kg, about 900 times the mass of the Great Pyramid of Giza.
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Magnetars facts
If a magnetar flew past Earth within 100,000 miles or 160,934.4 kilometre, its ultra-magnetic field would destroy the data on every credit card.
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If a magnetar flew past Earth within 100,000 miles or 160,934.4 kilometre, its ultra-magnetic field would destroy the data on every credit card.
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Magnetar: The strongest 🧲 in the universe
Introduction to Magnetar
Magnetar is a type of neutron star with a magnetic field thousand times stronger than normal neutron star and pulsar, it is believed that magnetar have an extremely powerful magnetic field making it impossible for any sort of life to exist in it vicinity. For example if you are 1000 mile away formal magnetar the magnetic field will disturb your molecular structure. As of 2010, they are the most powerful magnetic objects detected throughout the universe.
History
The theory regarding these objects was proposed in 1992 by Robert Duncan and Christopher Thompson. The theory was subsequently developed by Bohdan Paczyński and by its proposers. When a neutron start is forming it can have a crack on it crust like tectonic plates on earth. This is called a start quake similar to earth quake but on stars.
As this happens, the magnetar release a blast of radiation that can be detected from a thousand light years away. This theory explained a burst of gamma rays from the Large Magellanic Cloud that had been detected on March 5, 1979, and other less bright bursts from within our galaxy.
Formation
Like any neutron star magnetar are formed from the collapsed red giant star 100 times bigger than the sun through a process called supernova. What left is a neutron star 20 km wide and made of entirely neutron. In a supernova, a star collapses to a neutron star, and its magnetic field increases dramatically in strength through conservation of magnetic flux. Halving a linear dimension like the size of the object increases the magnetic field fourfold.
When star collapse to become a neutron star it size will decrease or shrink. A red giant stars have a radius 1000 times the sun, but according to some observation it estimated that red giants have a diameter from 100 million to 1 billion kilometre, and when they become a neutron start they will have a diameter of about 20 km. from this observation we can observe that there is a large gap in size and from the previous statement "Halving a linear dimension like the size of the object increases the magnetic field fourfold" and size difference is one factor for the high magnetic field strength.
Duncan and Thompson calculated that when the spin, temperature and magnetic field of a newly formed neutron star falls into the right ranges, a dynamo mechanism could act, converting heat and rotational energy into magnetic energy and increasing the magnetic field, normally an already enormous 10^8 teslas, to more than 10^11 teslas (or 10^15 gauss). The result is a magnetar.
Recent discovery
A new discovery could soon be raising the total number of confirmed magnetars to 25.
On 3 June, a brief X-ray burst close to the galactic plane caught the attention of the Swift Burst Alert Telescope (BAT). Follow-up observation and analysis seem to confirm that it was emitted by a previously unknown magnetar, now named Swift J1555.2-5402.
More on Neutron star:
• Neutron star: part one
• Neutron star: part two
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Introduction to Magnetar
Magnetar is a type of neutron star with a magnetic field thousand times stronger than normal neutron star and pulsar, it is believed that magnetar have an extremely powerful magnetic field making it impossible for any sort of life to exist in it vicinity. For example if you are 1000 mile away formal magnetar the magnetic field will disturb your molecular structure. As of 2010, they are the most powerful magnetic objects detected throughout the universe.
History
The theory regarding these objects was proposed in 1992 by Robert Duncan and Christopher Thompson. The theory was subsequently developed by Bohdan Paczyński and by its proposers. When a neutron start is forming it can have a crack on it crust like tectonic plates on earth. This is called a start quake similar to earth quake but on stars.
As this happens, the magnetar release a blast of radiation that can be detected from a thousand light years away. This theory explained a burst of gamma rays from the Large Magellanic Cloud that had been detected on March 5, 1979, and other less bright bursts from within our galaxy.
Formation
Like any neutron star magnetar are formed from the collapsed red giant star 100 times bigger than the sun through a process called supernova. What left is a neutron star 20 km wide and made of entirely neutron. In a supernova, a star collapses to a neutron star, and its magnetic field increases dramatically in strength through conservation of magnetic flux. Halving a linear dimension like the size of the object increases the magnetic field fourfold.
When star collapse to become a neutron star it size will decrease or shrink. A red giant stars have a radius 1000 times the sun, but according to some observation it estimated that red giants have a diameter from 100 million to 1 billion kilometre, and when they become a neutron start they will have a diameter of about 20 km. from this observation we can observe that there is a large gap in size and from the previous statement "Halving a linear dimension like the size of the object increases the magnetic field fourfold" and size difference is one factor for the high magnetic field strength.
Duncan and Thompson calculated that when the spin, temperature and magnetic field of a newly formed neutron star falls into the right ranges, a dynamo mechanism could act, converting heat and rotational energy into magnetic energy and increasing the magnetic field, normally an already enormous 10^8 teslas, to more than 10^11 teslas (or 10^15 gauss). The result is a magnetar.
Recent discovery
A new discovery could soon be raising the total number of confirmed magnetars to 25.
On 3 June, a brief X-ray burst close to the galactic plane caught the attention of the Swift Burst Alert Telescope (BAT). Follow-up observation and analysis seem to confirm that it was emitted by a previously unknown magnetar, now named Swift J1555.2-5402.
More on Neutron star:
• Neutron star: part one
• Neutron star: part two
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Astronomers May Have Just Detected a New Magnetar!
A new discovery could soon be raising the total number of confirmed magnetars to 25.
On 3 June, a brief X-ray burst close to the galactic plane caught the attention of the Swift Burst Alert Telescope (BAT). Follow-up observation and analysis seem to confirm that it was emitted by a previously unknown magnetar, now named Swift
Source: @EverythingScience
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A new discovery could soon be raising the total number of confirmed magnetars to 25.
On 3 June, a brief X-ray burst close to the galactic plane caught the attention of the Swift Burst Alert Telescope (BAT). Follow-up observation and analysis seem to confirm that it was emitted by a previously unknown magnetar, now named Swift
J1555.2-5402...Source: @EverythingScience
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ScienceAlert
Astronomers May Have Just Detected a New Magnetar!
A new discovery could soon be raising the total number of confirmed magnetars to 25.
The dynamo mechanism
The dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field. The dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid can maintain a magnetic field over astronomical time scales. A dynamo is thought to be the source of the Earth's magnetic field and the magnetic fields of Mercury, the Jovian planets and stars.
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The dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field. The dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid can maintain a magnetic field over astronomical time scales. A dynamo is thought to be the source of the Earth's magnetic field and the magnetic fields of Mercury, the Jovian planets and stars.
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Pulsar
A pulsar is a type of neutron star and highly magnetized rotating compact star that emits beams of electromagnetic radiation out of its magnetic poles.
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A pulsar is a type of neutron star and highly magnetized rotating compact star that emits beams of electromagnetic radiation out of its magnetic poles.
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Schwarzchild radius
Anything can become a black hole if it's radius cross the Schwarzschild radius. Schwarzschild radius, also called gravitational radius, is the radius below which the gravitational attraction between the particles of a body must cause it to undergo irreversible gravitational collapse. Resulting a black hole
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Anything can become a black hole if it's radius cross the Schwarzschild radius. Schwarzschild radius, also called gravitational radius, is the radius below which the gravitational attraction between the particles of a body must cause it to undergo irreversible gravitational collapse. Resulting a black hole
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Quantum foam: Is vacuum empty? ✨
Quantum physics says that there is no empty space or a vacuum. Rather, it’s full of energy and brimming with matter and antimatter. In it, random particles pop in and out of existence due to that energy. The particles are made of matter and antimatter, and they appear, touch and explode and disappear all in a billionth of a second.
In general vacuum is not empty although it seems empty on macroscopic scale, it is filled with virtual particles that appear and disappear constantly on the quantum scale or microscopic scale.
More on vacuum:👇
• Vacuum: Empty but a busy place
• Vacuum: A Better Definition
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Quantum physics says that there is no empty space or a vacuum. Rather, it’s full of energy and brimming with matter and antimatter. In it, random particles pop in and out of existence due to that energy. The particles are made of matter and antimatter, and they appear, touch and explode and disappear all in a billionth of a second.
In general vacuum is not empty although it seems empty on macroscopic scale, it is filled with virtual particles that appear and disappear constantly on the quantum scale or microscopic scale.
More on vacuum:👇
• Vacuum: Empty but a busy place
• Vacuum: A Better Definition
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Solar-Maximum
The magnetic pole of the Sun switch places every eleven years in a cycle called Solar max or solar maximum. At the height of this cycle or solar maximum, the Sun's magnetic poles flip. Along the way, changes in the Sun's magnetism produce a greater number of sunspots, more energy and cause solar eruptions of particles
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The magnetic pole of the Sun switch places every eleven years in a cycle called Solar max or solar maximum. At the height of this cycle or solar maximum, the Sun's magnetic poles flip. Along the way, changes in the Sun's magnetism produce a greater number of sunspots, more energy and cause solar eruptions of particles
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Effect of the Moon 🌘
When the Moon is directly overhead, you weight slightly less than you do other time, because of the effect of its gravity.
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When the Moon is directly overhead, you weight slightly less than you do other time, because of the effect of its gravity.
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Sun Light ☀️
It takes a photon up to 40,000 years to travel from the core of the sun to its surface because photon collides with other atoms in it journey to the surface of the sun, but only 8 minutes to travel the rest of the way to Earth.
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It takes a photon up to 40,000 years to travel from the core of the sun to its surface because photon collides with other atoms in it journey to the surface of the sun, but only 8 minutes to travel the rest of the way to Earth.
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Electromagnetic force and Quantum ElectroDynamics (QED)
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