The sun has had multiple names over the centuries, including the French word "soleil," the Latin term "sol" from the ancient Romans and "helios" from the ancient Greeks. However, after Germany coined the term "sonne," the word translated into English became "sonne" and later just "sun," according to NASA.Know More
As the name for the sun evolved over time, many cultures and countries adopted various versions of the title. The term "sol" was used in Spanish and Portuguese cultures, while Italy used a slight variation on the word, calling it "sole." The "sonne" name from Germany expanded to old Goth and old Norse cultures as well.
It wasn't until about 1610 that any traces of the sun were detected in the form of sunspots. Both Thomas Harriot and Galileo Galilei noticed these sunspots. However, the sunspots later vanished for some time. By around 1860, the sun had a coronal mass ejection, the first that was known in history.
The sun is classified as a G2V star. The "V" portion of this name is due to how brightly that the sun burns off hydrogen. Six different portions of the sun exist in total, including its visible surface, the radiative zone, its chromosphere, its convective zone, its corona (last layer) and its core (the innermost layer).Learn more about Our Sun
Once the sun touches the horizon, it takes approximately 2 to 3 minutes to go below the horizon. This is dependent on several factors, including latitude, time of year and atmospheric thickness.Full Answer >
The sun is primarily composed of hydrogen and helium. Hydrogen is the most abundant element of the Earth’s closest star, representing 71 percent of its mass. Helium is the second most abundant element in the sun, representing about 27 percent of its mass. Oxygen, carbon, nitrogen, silicone, magnesium, neon, iron and sulfur combine to form about 1 percent of the sun’s mass.Full Answer >
Solar winds are caused by variance in the magnetic field of the sun. Certain lines in the magnetic field allow particles to travel outward easily and to pick up speed as they move.Full Answer >
Light is necessary for the survival of life on Earth, as almost all energy used by life is derived from the sun. Plants and algae use light energy in photosynthesis, which provides usable chemical energy for heterotrophic organisms. In addition, without light, the Earth would be completely cold and dark, as even the moon gets its glow from reflecting the sun.Full Answer >