Our lives depend on the sun. We need sunlight to grow the food we eat, and its warmth makes life on Earth sustainable. Our daily schedule is influenced by the sun. We wake up at sunrise and rest at sunset. We want to enjoy the sunniest days and check the weather forecast before planning a vacation or wedding. But despite its splendor, we often take the sun for granted. Here are some great facts about the sun to share in your classroom.
Plus, click the button to get a Google Slides copy of all the enlightening facts below.
our favorite facts about the sun
The sun is a 4.5 billion year old star.
Yes, at the center of our solar system is a giant ball of helium and hydrogen.
The sun is approximately 93 million miles from Earth.
Or 150 million kilometers, but who’s counting? It may be far away, but it is very helpful in supporting our lives on this earth.
It is the largest celestial body in our solar system.
In terms of volume, it would take 1.3 million Earths to fill the Sun. That’s crazy!
The sun’s gravity holds the solar system together.
Everything continues to orbit around it, whether it’s a piece of debris or a giant planet.
The hottest part of the sun is the sun’s core.
Temperatures can exceed 27 million degrees Fahrenheit.
The sun’s activity affects the nature of the universe throughout the solar system.
It constantly emits charged particles and experiences powerful eruptions.
NASA and other international space agencies monitor the sun.
Everything from the surface to the atmosphere (and even inside) is monitored 24/7.
There are spacecraft designed specifically for the exploration of the Sun.
These include the Solar Orbiter, Parker Solar Probe, Hinode, SOHO, IRIS, ACE, WIND, Solar Dynamics Observatory, and STEREO.
The sun is the only star in our solar system.
This may be one of the most surprising facts about the sun. Everything in our solar system, including planets, comets, asteroids, and space junk, revolves around our solar system, so the sun doesn’t need to be in the spotlight.
The sun doesn’t actually have a solid surface.
Although it may appear solid from where we stand, the surface we see is actually called the photosphere. In reality, the Sun is just a ball of incredibly hot plasma.
Its rotation makes it difficult to measure the Sun’s “days.”
Since it is not a solid mass, the rotation is not uniform. Plasma in different regions of the sun’s surface rotates at different speeds. At the equator, the sun completes one revolution every 25 Earth days (depending on your latitude). The Sun is a pole and rotates once around its axis every 36 Earth days.
The sun has no moon.
But it’s never alone. It may not have a moon, but it is orbited by eight planets, asteroids, comets, and at least five dwarf planets.
When the solar system formed, the sun was surrounded by gas and dust.
That was 4.6 billion years ago, and some of that dust can still be seen in the dust ring that orbits the sun.
Nothing can survive on the sun.
We may need that energy to survive, but nothing can live on the sun. Despite the upbeat tunes of the 1980s, no one will ever “walk on sunshine.”
There is enough nuclear fuel to keep it running for another 5 billion years.
First, it expands and becomes a red giant star. After losing its outer layer, its core collapses and the Sun becomes a white dwarf. Over time, it gradually turns into something called a cool, dim black dwarf.
The sun is made mostly of hydrogen.
The second largest element is helium. The rest of the Sun’s material is made up of oxygen, carbon, neon, nitrogen, magnesium, iron, and silicon.
It takes 8 minutes and 20 seconds for sunlight to reach the earth.
We know that the sun is the only star in our solar system. The second closest star is Proxima Centauri, whose light takes more than four years to reach Earth.
The sun creates the weather in space.
The Sun has a stream of charged particles called the “solar wind,” and sometimes eruptions from sunspots can cause “solar flares,” which can destroy the Earth’s power grid.
The sun moves fast.
Although the sun is the center of the solar system, it never stays in one place. It continues to orbit the Milky Way at a speed of approximately 503,311 miles per hour. But this galaxy is so massive that it still takes about 226 million years for the sun to pass through it once.
The sun has spots.
Sunspots are areas on the sun’s surface that are darker and cooler than the surrounding area.
The sun’s atmosphere consists of three layers.
These three layers include the photosphere (the visible surface), the chromosphere, and the corona, which extends millions of kilometers into space.
The Sun makes up 99.86% of the mass of the Solar System.
It is so huge that it is smaller than everything else in the solar system, including all the planets, moons, and asteroids combined. Talk about hogging all the space.
The sun has an 11-year solar cycle.
During this cycle, the Sun’s magnetic activity increases and decreases, creating periods of high and low sunspot activity.
The sun is a yellow dwarf.
More technically, it is classified as a G-type main sequence star. This is a fairly common type of star in the universe.
Without the sun, Earth would be a frozen wasteland.
The sun’s warmth and light are essential to maintaining temperatures that support life as we know it. Learn more about what happens when the sun goes out.
The sun’s magnetic field is incredibly strong.
In fact, it’s even stronger than we think! Its magnetic activity causes phenomena such as solar flares, coronal mass ejections, and the auroras seen on Earth.
The sun is powered by nuclear fusion.
At its core, hydrogen atoms fuse into helium, releasing enormous amounts of energy.
The surface of the sun is constantly moving.
Under the influence of the sun’s convection and magnetic fields, surface plasma moves in complex patterns.
The sun could eventually engulf the Earth.
When it becomes a red giant in about 5 to 7 billion years, it will expand enough to swallow Mercury, Venus, and perhaps Earth.
Ancient civilizations worshiped the sun.
Many cultures, including the Egyptians, Aztecs, and Greeks, regarded the sun as a god or source of life and energy.
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