![]() So in this layer (and higher layers) it actually gets hotter if you go further away from the Sun, unlike in the lower layers, where it gets hotter if you go closer to the centre of the Sun. The temperature in the chromosphere varies between about 4000 kelvin at the bottom (the so-called temperature minimum) and 8000 kelvin at the top (6700 and 14,000☏, 37☌). Most of the photosphere is covered by granulation.Ĭhromosphere - A layer in the Sun between about 250 miles (400 km) and 1300 miles (2100 km) above the solar surface (the photosphere). The temperature in the photosphere varies between about 6500 K at the bottom and 4000 kelvin at the top (11,0☏, 62☌). It reaches from the surface visible at the centre of the solar disk to about 250 miles (400 km) above that. Photosphere - The deepest layer of the Sun that we can observe directly. The outer layers of the Sun are the Photosphere, the Chromosphere, the Transition Region and the Corona. They show a region 51,000 miles (82,500 kilometers) across at a resolution of 11 miles (18km). In some of the images, astronomers have overlaid the Earth for scale. These images of the chromosphere – which extends for about 2,000 kilometers (1,200 miles) above the visible surface of the sun – were taken on June 3 this year. 'Its insights will transform how our nation, and the planet, predict and prepare for events like solar storms.' 'NSF's Inouye Solar Telescope is the world's most powerful solar telescope that will forever change the way we explore and understand our sun,' said NSF Director, Sethuraman Panchanathan. It started construction in 2013 and is said to have cost around $344 million (£300 million). National Solar Observatory (NSO) released the images this week in celebration of the recent inauguration of the telescope, which is funded by National Science Foundation (NSF). ![]() Inouye Solar Telescope, the world's most powerful solar telescope on the island of Maui, Hawaii. ![]() National Solar Observatory's new images were taken by the Daniel K. The red rim can be seen when this H-alpha burns at a high temperature during a total solar eclipse.Also seen are golden cell-like structures – each about the size of Texas – packed together like a honeycomb, which are the signature of violent motions that transport heat from inside the sun to its surface. It is the H-alpha emission which actually gives the chromosphere its reddish colour. The spectrum of chromosphere has emission lines, with H-alpha lines being the strongest of emission lines. The spicules are long and thin finger-like gaseous spikes which rise through the chromosphere. One of the important features of the chromosphere is the presence of spicules on its edges. The temperature of photosphere, for instance, decreases as it moves away from the Sun. The temperature rises as chromosphere moves farther away from the Sun unlike other objects of the solar system. During the total eclipse, the moon hides the photosphere and makes way for the reddish chromosphere to be seen.Ĭhromosphere’s temperature ranges from 6,000 to 20,000 degree Celsius. The chromosphere, thus, can be only seen during a complete solar eclipse. It is normally not visible because its density is very low and due to the excessive brightness of the photosphere. It is about 2,000 to 3,000 kilometres deep, which is located immediately above the photosphere and just below the corona. Out of the three layers of the Sun’s atmosphere, chromosphere is the second one (with photosphere being the first layer and corona as the third).ĭescription: As the name suggests, chromosphere literally translates into ‘sphere of light’. It is actually the transition between corona and the photosphere. Definition: Chromosphere is a reddish and glowing layer of gas above a star’s (or Sun's) photosphere.
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