Which star has the largest radius?
The most massive star in the cosmos is UY Scuti, a hypergiant with a diameter 1,700 times greater than the sun.
Which of the following layers in the sun is the coolest?
While the core of the Sun’s interior can reach a temperature of 30 million degrees Fahrenheit, its outer layers drop. The photosphere, which is exterior to the core, is the coolest layer.
Why does a sunspot appear dark brown or black compared to the photosphere?
The sunspots appear dark because they are darker than the surrounding surface. They’re darker since they’re colder, and they’re colder due to the intense magnetic fields within them.
Which of these layers of the sun is coolest a core B radiation zone C photosphere?
The Core, Radiative Zone, and Convection Zone are the three layers of the Sun. The Photosphere, Chromosphere, Transition Region, and Corona are the outermost layers of the Sun. The photosphere is the lowest layer visible directly from Earth.
Which star has the smallest radius?
The tiniest star that has been discovered is OGLE-TR-122b, which is a red dwarf star in a binary stellar system. This red dwarf is the smallest star to have its radius measured correctly; it has a radius of 0.12 solar radii. 167,000 kilometers comes out to be the result.
How big is the biggest star compared to Earth?
The video “Star Size Comparison” (duration: 2:34) nicely illustrates how tiny Earth is compared to the Sun, which has a diameter of 1,392,000 kilometers and a radius of 695 km. And how puny the Sun is in comparison to other stars. VY Canis Majoris (a red hypergiant),
Which layer of the sun is the thickest?
The dense, hot core is in the middle. The radiative zone and the convective zone are two layers that surround the core. The photosphere, which surrounds everything, is the sun’s surface layer.
Which of the following parts of the sun is the hottest?
The core is the most powerful, with a temperature of 15 million Kelvin. The surface of the Sun has a temperature of only 5800 K, whereas the center reaches temperatures of up to 15 million Kelvin. That’s hot. Although the surface of the Sun appears to be cool, it is actually quite hot.
How many Earths can fit in the sun?
The Sun has a diameter of 864,400 miles (1,391,000 kilometers). This is approximately 109 times the size of Earth. The Sun is 333,000x heavier than Earth. It would take 1,300,000 planet Earth to fit inside it.
How long can sunspots last?
The sunspot cycle lasts around eleven years on average. The cycle, however, can vary in length. From about 1700 to the present, the sunspot cycle (from one solar min to the next) has varied in length from as little as nine years to as long as fourteen years.
What causes sunspots?
Sunspots are caused by the Sun’s magnetic field overflowing to the photosphere, or visible “surface,” of the Sun. Solar flares and Coronal Mass Ejections (CMEs) are often produced by the strong magnetic fields around sunspots. Our star isn’t the only one with spots; other stars do as well.
Are sunspots hotter or cooler?
The sun has various layers or regions, each with its own set of characteristics. The solar photosphere is one of them and is divided into cooler, darker areas known as sunspots. The photosphere has a temperature of 5,800 degrees Kelvin. Sunspots have temperatures that range from 3,800 to 5,800 degrees K.
How much hotter is the core of the sun than its surface?
How much hotter is the core of the sun than its surface? The solar core from where the Sun’s energy is made is very much hotter than the surface of the Sun. The surface of the Sun has the temperature over 5500 degrees Celsius (10,000 degrees Fahrenheit).
Which layer of the sun do we normally see?
The photosphere is the outermost layer of the solar atmosphere. It’s the Sun’s “surface” that we see when we gaze at it in “white” (i.e. normal) light, as opposed to UV or X-rays. We view sunspots and faculae (bright, little cloud-like structures) in the photosphere. The average temperature of the photosphere is about 6000 Kelvin.
What does the corona do?
A corona (from the Latin word coronam, which means “crown”) is a halo of plasma that surrounds the sun and other stars. During a total solar eclipse, the Sun’s corona can be seen millions of kilometers into outer space, although a coronagraph may also be used to observe it.