Which one is the second largest planet?
Saturn is the sixth planet from the Sun and the second-largest planet in our solar system.
Uranus, the third largest planet in our solar system, may be the strangest because it spins on its side.
Neptune is the fourth largest planet in terms of diameter, making it the smallest in physical size of the gas giants.
Small World. Mercury is the smallest planet in our solar system – only slightly larger than Earth's Moon.
The best planet is Uranus—Uranus the bizarre. Uranus the unique. Saturn may be flashy and pretty, and Jupiter may be huge and dramatic, but they can't hold a candle to Uranus's intrigue. While all the other planets spin like tops around the sun, Uranus lies on its side.
The Latest. Fifth in line from the Sun, Jupiter is, by far, the largest planet in the solar system – more than twice as massive as all the other planets combined. Jupiter's familiar stripes and swirls are actually cold, windy clouds of ammonia and water, floating in an atmosphere of hydrogen and helium.
Jupiter, being the biggest planet, gets its name from the king of the ancient Roman gods.
The planet Saturn is probably the best known and most beautiful planet in the Solar System.
But remember: The Greeks started out calling the Sun a planet given how it moved on the sky. We now know that the properties of the Sun show it to belong in a very different category from the planets. It's a star, not a planet.
The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and then the possible Planet Nine.
What is our galaxy name?
Astronomy > The Milky Way Galaxy. Did you know that our star, the Sun, is just one of hundreds of billions of stars swirling within an enormous cosmic place called the Milky Way Galaxy? The Milky Way is a huge collection of stars, dust and gas.
Earth is the fifth-largest planet in the solar system. It's smaller than the four gas giants — Jupiter, Saturn, Uranus and Neptune — but larger than the three other rocky planets, Mercury, Mars and Venus.

The Romans bestowed the names of gods and goddesses on the five planets that could be seen in the night sky with the naked eye.
Mars is known as the Red Planet. It is red because the soil looks like rusty iron. Mars has two small moons. Their names are Phobos (FOE-bohs) and Deimos (DEE-mohs).
Named GJ 504b, the planet is made of pink gas. It's similar to Jupiter, a giant gas planet in our own solar system. But GJ 504b is four times more massive. At 460°F, it's the temperature of a hot oven, and it's the planet's intense heat that causes it to glow.
The coldest planet in our solar system on record goes to Uranus which is closer to the Sun and 'only' about 20 times further away from the Sun than the Earth is. The lowest temperature recorded there was minus 224 degrees Celsius.
Venus is the second planet from the Sun and is Earth's closest planetary neighbor. It's one of the four inner, terrestrial (or rocky) planets, and it's often called Earth's twin because it's similar in size and density.
In reality, the moon is not considered a star. While it shines just like many of the stars in the sky, its light comes from the sun, not itself. To be a star, a celestial body must be capable of igniting itself because of its mass. The moon's core has never ignited, so it does not fall under the definition of a star.
The core of the sun is so hot and there is so much pressure, nuclear fusion takes place: hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun's surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).
Does the Sun move?
Yes, the Sun does move in space. The Sun and the entire Solar System revolve around the center of our own Galaxy - the Milky Way.
According to the International Astronomical Union, the organization charged with naming all celestial bodies and deciding on their statuses, Pluto is still not an official planet in our solar system.
During the day, sunlight floods our atmosphere in all directions, with both direct and reflected sunlight coming to us from everywhere we can see. At night, the sunlight doesn't flood the atmosphere, and so it's dark everywhere in the sky that there isn't a point of light at, like a star, planet, or the Moon.