Edlén and Grotrian’s finding that
the sun’s corona is so much hotter than the photosphere
– despite being further from the sun’s core, its ultimate source of energy – has led to much head-scratching in the scientific community.
Why is corona hotter?
Corona is not just the name of the virus that has caused the ongoing pandemic. It is also what scientists call the
upper atmosphere of the Sun
. … These oscillations can cause the Sun’s plasma to rise up to the corona and crash, depositing its energy there, like a heat bomb.
What is the difference between the corona and photosphere?
the corona – the outermost, hot shell of the atmosphere.
the chromosphere
– a transparent layer between the corona and the photosphere. the photosphere – the visible “surface” of the Sun. the sunspots – dark areas on the photosphere, which are cooler than the surroundings.
Is the corona more dense than the photosphere?
Why? The corona is
about 10 million times less dense than the Sun’s surface
. This low density makes the corona much less bright than the surface of the Sun.
Why is the corona hotter than the chromosphere and photosphere?
Light shone on star mystery: Why sun’s corona is much hotter than its surface. … Their calculations confirm that
the MHD waves could be responsible for transporting energy from below the solar surface, out through the chromosphere, into the corona
and leading to heating of the outer layers in excess of a million degrees.
What is hottest thing in the universe?
The dead star at the center of the Red Spider Nebula
has a surface temperature of 250,000 degrees F, which is 25 times the temperature of the Sun’s surface. This white dwarf may, indeed, be the hottest object in the universe.
What is corona of Sun?
Definition: Corona is
a luminous envelope of plasma that surrounds the Sun and other celestial bodies
. It is extended to millions of kilometres into space and is commonly seen during a total solar eclipse. … The composition of the corona is the same as the interior of the Sun, mainly made up of hydrogen but ionized form.
What is the hottest sun?
One of the best known examples is
Eta Carinae
, located about 7,500 light-years from the Sun. Eta Carinae could be as large as 180 times the radius of the Sun, and its surface temperature is 36,000-40,000 Kelvin. Just for comparison, 40,000 Kelvin is about 72,000 degrees F.
How hot is a lightning bolt?
Air is a very poor conductor of electricity and gets extremely hot when lightning passes through it. In fact, lightning can heat the air it passes through to
50,000 degrees Fahrenheit
(5 times hotter than the surface of the sun).
How hot is core of the Sun?
Core: the temperature at the very center of the Sun is
about 27 million degrees Farenheit (F)
.
What are the 7 layers of the Sun?
The Sun is the largest object in our solar system. It is composed of seven layers:
three inner layers and four outer layers
. The inner layers are the core, the radiative zone and the convection zone, while the outer layers are the photosphere, the chromosphere, the transition region and the corona.
Why can you only see the corona during a solar eclipse?
The corona shines only about
half as brightly as the Moon
and is normally not visible to the unaided eye, because its light is overwhelmed by the brilliance of the solar surface. During a total solar eclipse, however, the Moon blocks out the light from the photosphere, permitting naked-eye observations of the corona.
Which atom is found most in the Sun?
A:
Hydrogen and helium
are by far the most abundant elements found in the Sun, making up about 98 percent of its mass, but other, heavier elements play an important role in the physical processes that occur in the Sun.
Does the Sun have a corona?
The corona is
the outer atmosphere of the Sun
. It extends many thousands of kilometers (miles) above the visible “surface” of the Sun, gradually transforming into the solar wind that flows outward through our solar system. The material in the corona is an extremely hot but very tenuous plasma.
Why does the Sun’s corona show emission lines?
The corona
shines brightly in x-rays because of its high temperature
. On the other hand, the “cool” solar photosphere emits very few x-rays. This allows us to view the corona across the disk of the Sun when we observe the Sun in X-rays.
What color is the hottest part of the Sun?
Hotter stars, like Rigel, can get above 10000 Kelvin, and they look
blue
. Our own Sun has a temperature of almost 5800 Kelvin, and when viewed outside of our atmosphere, appears white.
