asteroid comet meteor meteorite

Meteoroids are lumps of rock or iron that orbit the sun, just as planets, asteroids, and comets do. Meteoroids, especially the tiny particles called micrometeoroids, are extremely common throughout the solar system.

While it is floating around in space, a space rock is called a meteoroid. Really small space rocks (space dust) are called micrometeoroids. Sometimes a meteoroid doesn’t completely burn up as it travels through the Earth’s atmosphere. If it makes it to the ground, it is called a meteorite.

Venus

Planets in Our Solar System

• Mercury. Mercury—the smallest planet in our solar system and closest to the Sun—is only slightly larger than Earth’s Moon.
• Venus. Venus spins slowly in the opposite direction from most planets.
• Earth.
• Mars.
• Jupiter.
• Saturn.
• Uranus.
• Neptune.

Venus is the hottest planet in the solar system. Although Venus is not the planet closest to the sun, its dense atmosphere traps heat in a runaway version of the greenhouse effect that warms Earth.

The hottest planet in the solar system is Venus with an average temperature of 464 degree Celsius and the coldest planet in the solar system is Pluto with an average temperature of -225 degree Celsius.

The seventh planet from the sun, Uranus has the coldest atmosphere of any of the planets in the solar system, even though it is not the most distant.

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Mercury

Closest to the sun, Mercury is the second smallest planet in our solar system. It has an orbital period of 87.97 Earth days and rotates on its axis once every 59 Earth days.

Biggest Planets In Our Solar System

The smallest planet in our solar system is Mercury and the largest planet is Jupiter.

To begin with planets, as that is the easiest question to answer, there are no planets bigger than the Sun or even close to the size of the Sun. At about 13 times the mass of Jupiter a planet becomes what is referred to as a “brown dwarf”.

“Jupiter is called a failed star because it is made of the same elements (hydrogen and helium) as is the Sun, but it is not massive enough to have the internal pressure and temperature necessary to cause hydrogen to fuse to helium, the energy source that powers the sun and most other stars.

Deep within Neptune and Uranus, it rains diamonds—or so astronomers and physicists have suspected for nearly 40 years. The outer planets of our Solar System are hard to study, however. Only a single space mission, Voyager 2, has flown by to reveal some of their secrets, so diamond rain has remained only a hypothesis.

Betelgeuse, a red giant, is about 700 times bigger than the sun and about 14,000 times brighter. “We have found stars that are 100 times bigger in diameter than our sun. Truly those stars are enormous,” NASA says on its SpacePlace website.

blue

No, the Sun is not the hottest star; there are many stars much hotter than the Sun! You can tell the approximate temperature of a star by looking at its color. Even hotter stars are white and then the hottest stars are blue! The surface temperature of our sun is 5777 Kelvins (~5000 degrees C or ~ 9940 degrees F).

At its surface (called the “photosphere”), the sun’s temperature is a whopping 10,000° F! That’s about five times hotter than the hottest lava on Earth. A temperature of 27 million degrees Fahrenheit is more than 12,000 times hotter than the hottest lava on Earth!

Since the temperature of a star can determine its visual color, this category scheme is known as spectral type. The main categories of spectral type are M, K, G, F, A, B, and O. The coolest stars (red dwarfs) being M, and the hottest stars being O. Our own Sun is a G star.

While lava can be as hot as 2200 F, some flames can be much hotter, such as 3600 F or more, while a candle flame can be as low as 1800 F. Lava is hotter than a typical wood or coal-buring fire, but some flames, such as that of an acetylene torch, is hotter than lava.

More videos on YouTube The same way you expect magma to destroy just about anything and everything it comes in contact with. Instead, the lava essentially rested on top of it, making it possible for someone to “touch” it. This is possible because of the aerogel’s own amazing properties.