The Solar Orbiter completed its closest approach to the Sun yet and the images and videos are outstanding. And it's only getting started.
The spacecraft benefits from getting as close to the Sun as it can. But close approaches make the Solar Orbiter hot. The spacecraft’s first line of defence is its heat shield. It’s a multi-layered titanium device mounted on a honeycomb aluminum support, with carbon fibre skins designed to shed heat. Between all that and the spacecraft’s body, there are another 28 layers of insulation.
The intriguing feature in the bottom third of the image, below the centre, has been nicknamed the solar hedgehog. No one knows exactly what it is or how it formed in the Sun’s atmosphere. The image was captured on 30 March 2022 by the Solar Orbiter’s Extreme Ultraviolet Imager. Image Credit: ESA. This graphic shows the Solar Orbiter’s role in detecting a CME and forecasting aurora when the CME struck Earth. On 10 March, a solar flare produced a coronal mass ejection directed at Earth. The cameras on the ESA/NASA mission SOHO recorded the event at around 22:06 UT. Solar Orbiter also observed it from its viewpoint about 67 million km from the Sun.
The awesome energy of the Sun can be readily appreciated in this sequence of images combining data from three instruments on the ESA/NASA Solar Orbiter spacecraft. It shows the way a solar flare on 25 March 2022, one day before the Solar Orbiter’s closest approach to the Sun, created a massive disturbance in the Sun’s outer atmosphere, the solar corona, leading to an enormous quantity of the gas being hurled into space in a coronal mass ejection.
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