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15 Μαρ 2023 · These are called sun pillars or light pillars, and are caused by light reflecting from hexagonal ice crystals drifting in Earth’s atmosphere.
The Sun formed about 4.6 billion years ago in a giant, spinning cloud of gas and dust called the solar nebula. As the nebula collapsed under its own gravity, it spun faster and flattened into a disk. Most of the nebula's material was pulled toward the center to form our Sun, which accounts for 99.8% of our solar system’s mass.
Figure 8. Simulated sun pillars from flat plate crystals. A horizontal sequence of pic tures shows how the pillar changes as the sun sets. Each of the three sequences is for a different degree of ice-crystal orientation. Figure 9. Orientations that are taken into account in the pencil-crystal distribution. pendicular to the reflecting face; the
Explain how the composition of the Sun differs from that of Earth; Describe the various layers of the Sun and their functions; Explain what happens in the different parts of the Sun’s atmosphere; The Sun, like all stars, is an enormous ball of extremely hot, largely ionized gas, shining under its own power. And we do mean enormous.
2 Μαΐ 2020 · What's fascinating about this particular sun pillar that was captured here is that it comes along with an even rarer optical phenomenon: an elliptical halo.
The Sun is a G-type main-sequence star (G2V), informally called a yellow dwarf, though its light is actually white. It formed approximately 4.6 billion [a] years ago from the gravitational collapse of matter within a region of a large molecular cloud.
3 Φεβ 2024 · The four layers of the Sun are the core, radiative zone, convective zone, and atmosphere. The Sun is a colossal nuclear reactor at the heart of our solar system. Our favorite star is about 109 times the diameter of Earth and over 330,000 times its mass.
