Daisy Dobrijevic joined Space.com in February 2022 having previously worked for our sister publication All About Space magazine as a staff writer. Before joining us, Daisy completed an editorial internship with the BBC Sky at Night Magazine and worked at the National Space Centre in Leicester, U.K.
NASA's space-based solar observatory STEREO-A is keeping a close eye on 'Devil Comet' 12P/Pons-Brooks as it prepares to make its closest approach to the sun — known as perihelion — on April 21.from the observatory's perspective, just as a coronal mass ejection , a large expulsion of plasma and magnetic field from the sun, is launched into space. .
On April 21, comet 12P/Pons-Brooks will pass within about 72.6 million miles , of the sun, this is equivalent to three-quarters the Earth's distance from the sun. The comet has gained much media attention in recent years due to its sudden glare ups in brightness and changing appearance. Though the exact cause of these flares is unknown, Richard Miles of the British Astronomical Association thinks comet 12P/Pons Brooks may be one of 10 to 20 known comets that contain active ice volcanoes.
The 'magma' of these volcanoes is a cold mixture of liquid hydrocarbons and dissolved gasses, all trapped beneath a surface that has the consistency of wax, skywatching columnist and meteorologist Joe RaoComet 12P/Pons-Brooks gained the moniker 'Devil Comet' when a large outburst on July 20, 2023, caused a shell of expanding gas surrounding the nucleus, known as the coma, to resemble some a horseshoe shape.
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