One of the largest coronal holes of the year was created on the Sun. Its lateral diameter is about a million kilometers, the Laboratory of Solar Astronomy of the Institute of Space Research of the Russian Academy of Sciences reported. In images from space, this region looks like a giant dark hole on the surface of the star. Scientists called the effect an optical illusion; No real space has appeared inside the Sun. In reality, a coronal hole is a vast region of the solar atmosphere where the temperature and density of the plasma is significantly reduced.

One of the largest coronal holes of the year was created on the Sun. Its lateral diameter is about a million kilometers, the Laboratory of Solar Astronomy of the Institute of Space Research of the Russian Academy of Sciences reported. In images from space, this region looks like a giant dark hole on the surface of the star. Scientists called the effect an optical illusion; No real space has appeared inside the Sun. In reality, a coronal hole is a vast region of the solar atmosphere where the temperature and density of the plasma is significantly reduced.