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Keywords: Sun, corona, magnetic field
![Пятна на активном Солнце](https://images.astronet.ru/pubd/2023/07/11/0001904893/SpottedSun_Sanli_960.preview.jpg)
11.07.2023
Why is our Sun so active now? No one is sure. An increase in surface activity was expected because our Sun is approaching solar maximum in 2025. However, last month our Sun sprouted more sunspots than in any month during the entire previous 11-year solar cycle -- and even dating back to 2002.
![Активные протуберанцы на спокойном Солнце](https://images.astronet.ru/pubd/2018/08/20/0001433524/SolarProminences_Friedman_821.preview.jpg)
20.08.2018
Why is the Sun so quiet? As the Sun enters into a period of time known as a Solar Minimum, it is, as expected, showing fewer sunspots and active regions than usual. The quietness is somewhat unsettling, though, as so far this year, most days show no sunspots at all.
![Венера и ультрафиолетовое Солнце](https://images.astronet.ru/pubd/2018/02/04/0001397681/SunVenusUv3_SdoDove_960.preview.jpg)
4.02.2018
An unusual type of solar eclipse occurred in 2012. Usually it is the Earth's Moon that eclipses the Sun. That year, most unusually, the planet Venus took a turn. Like a solar eclipse by the Moon, the phase of Venus became a continually thinner crescent as Venus became increasingly better aligned with the Sun.
![Выброс солнечного волокна](https://images.astronet.ru/pubd/2018/09/16/0001438448/filament_sdo_960.preview.jpg)
16.09.2018
What's happened to our Sun? Nothing very unusual -- it just threw a filament. Toward the middle of 2012, a long standing solar filament suddenly erupted into space producing an energetic Coronal Mass Ejection (CME).
![Падающая башня, активное Солнце](https://images.astronet.ru/pubd/2022/04/01/0001824785/sunspotsleaningtowerofpisa1024.preview.jpg)
1.04.2022
The natural filter of a hazy atmosphere offered this recognizable architecture and sunset view on March 27. Dark against the solar disk, large sunspots in solar active regions 2975 and 2976 are wedged between the Duomo of Pisa and its famous Leaning Tower.
![Протуберанец около западного лимба](https://images.astronet.ru/pubd/2022/06/24/0001839008/AR3038_Filaprom_HA_DS_150mmF20_IMX174_Color_06222022_1024.preview.jpg)
24.06.2022
A solar filament is an enormous stream of incandescent plasma suspended above the active surface of the Sun by looping magnetic fields. Seen against the solar disk it looks dark only because it's a little cooler, and so slightly dimmer, than the solar photosphere.
![Ворс голубого Солнца](https://images.astronet.ru/pubd/2009/11/04/0001236801/bluesun_friedman.preview.jpg)
4.11.2009
Our Sun may look like all soft and fluffy, but it's not. Our Sun is an extremely large ball of bubbling hot gas, mostly hydrogen gas. The above picture...
![Зеленый луч](https://images.astronet.ru/pubd/2006/11/07/0001217366/greenflash_casado_big.preview.jpg)
7.05.2000
Many think it is just a myth. Others think it is true but its cause isn't known. Adventurers pride themselves on having seen it. It's a green flash from the Sun. The truth is the green flash does exist and its cause is well understood.
![Зеленый луч Солнца](https://images.astronet.ru/pubd/2004/03/21/0001197207/greenflash_parviainen.preview.jpg)
21.03.2004
Many think it is just a myth. Others think it is true but its cause isn't known. Adventurers pride themselves on having seen it. It's a green flash from the Sun. The truth is the green flash does exist and its cause is well understood.
![Солнечный протуберанец: вид с SOHO](https://images.astronet.ru/pubd/2006/04/17/0001213314/equinoxprom_eit.preview.jpg)
16.04.2006
How can gas float above the Sun? Twisted magnetic fields arching from the solar surface can trap ionized gas, suspending it in huge looping structures. These majestic plasma arches are seen as prominences above the solar limb.
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