- Saturn is huge. It is the second largest planet in our Solar System. Jupiter is the only planet that is bigger.
- You cannot stand on Saturn. It is not like Earth. Saturn is made mostly of gases. It has a lot of helium. This is the same kind of gas that you put in balloons.
- Its beautiful rings are not solid. They are made up of bits of ice, dust and rock.
- It is very windy on Saturn. Winds around the equator can be 1,800 kilometers per hour. That’s 1,118 miles per hour! On Earth, the fastest winds “only” get to about 400 kilometers per hour. That’s only about 250 miles per hour.
- Saturn spins on its axis very fast. A day on Saturn is 10 hours and 14 minutes.
- Saturn goes around the Sun very slowly. A year on Saturn is more than 29 Earth years.
- Brightness of sunlight at Saturn 1 percent of that at Earth.
- The first astronomers thought the rings were moons.
milkyway Archives - Cool Facts
Mar 7, 2011
By Plato P. | Cool Facts, Educational Facts, Facts For Kids, Science | 5 Comments
- Scientists believe that we can only see about 5% of the matter in the Universe. The rest is made up of invisible matter (called Dark Matter) and a mysterious form of energy known as Dark Energy.
- Neutron stars are so dense, that a soup can full of neutron star material would have more mass than the Moon.
- The Sun produces so much energy, that every second the core releases the equivalent of 100 billion nuclear bombs.
- Galileo Galilei is often incorrectly credited with the invention of the telescope. Instead, historians now believe the Dutch eyeglass maker Johannes Lippershey as its creator. Galileo was, however, probably the first to use the device to study the heavens.
- Black Holes are so dense, and produce such intense gravity, that even light can not escape. Theoretical physicists predict that there are situations under which light can escape (which is called Hawking radiation).
- Light from distant stars and galaxies takes so long to reach us, that we are actually seeing objects as they appeared hundreds, thousands or even millions of years ago. So, as we look up at the sky, we are really looking back in time.
- The Crab Nebula was produced by a supernova explosion in 1054 A.D. The Chinese and Arab astronomers at the time noted that the explosion was so bright, that it was visible during the day, and lit up the night sky for months.
- Shooting stars are usually just tiny dust particles falling through our atmosphere. Comets sometimes pass through Earth’s orbit, leaving trails of dust behind. Then as Earth plows through the dust in its path, the particles heat up, creating the streaks in the night sky.
- Even though Mercury is the closest planet to the Sun, temperatures can reach -280 degrees F. Why? Since Mercury has almost no atmosphere, there is nothing to trap heat near the surface. So, the dark side of Mercury (the side facing away from the Sun) is very cold.
- Venus is considerably hotter than Mercury, even though it is further away from the Sun. The thickness of Venus’ atmosphere traps heat near the surface of the planet.
Sep 23, 2010
If two pieces of pure metal without any coating, touch in space, they become permanently stuck together – Interesting facts about SPACEBy Plato P. | Cool Facts, Educational Facts, Science | 3 Comments
- If two pieces of pure metal without any coating, touch in space, they become permanently stuck together. This phenomena is known as cold welding! This doesn’t happen on earth because the atmosphere puts a layer of oxidized material between the surfaces.
- Uranus was originally called George’s Star. Uranus was also the first planet to be discovered with the use of a telescope.
- The Sun loses up to a billion kilograms a second due to solar winds. Solar winds are charged particles that are ejected from the upper surface of the sun due to the high temperature of the corona and the high kinetic energy particles gain through a process that is not well understood at this time.
- 1 pinhead of the sun’s energy is enough to kill a person at a distance of 160 kilometers.
- The light hitting the earth right now is 30 thousand years old. The energy in the sunlight we see today started out in the core of the sun 30,000 years ago – it spent most of this time passing through the dense atoms that make the sun and just 8 minutes to reach us once it had left the Sun! The temperature at the core of the sun is 13,600,000 kelvins. All of the energy produced by fusion in the core must travel through many successive layers to the solar photosphere before it escapes into space as sunlight or kinetic energy of particles.
- The moon is drifting away from Earth. Every year the moon moves about 3.8cm further away from the Earth. This is caused by tidal effects.
- We are moving through space at the rate of 530km a second. Our Galaxy – the Milky Way is spinning at a rate of 225 kilometers per second. In addition, the galaxy is traveling through space at the rate of 305 kilometers per second. This means that we are traveling at a total speed of 530 kilometers (330 miles) per second.
- If you put Saturn in waterit would float. The density of Saturn is so low that if you were to put it in a giant glass of water it would float. The actual density of Saturn is 0.687 g/cm3 while the density of water is 0.998 g/cm3. At the equator Saturn has a radius of 60,268 ± 4 km – which means you would need an extremely large glass of water to test this out.
- It snows in the upper atmosphere of Mars but vaporizes before reaching the ground.
- Saturn’s rings are about 500,000 miles in circumference but only about a foot thick.
- The Earth orbits the Sun at a speed of 66,700mph.