Planetary Science
The Solar System
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Planet Jupiter
Planet Mars
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Earth Sciences
Dwarf Planet Ceres
The Difference Between


Asteroids, or planetoids, are rocks larger than meteorites but smaller than planets that orbit around the Sun.

Asked in Paleontology, Dinosaurs, Asteroids

What caused the extinction of the dinosaurs?

Scientists have many theories about what caused the extinction of dinosaurs. Below are thoughts on some of the most common theories: Since about 90% of dinosaurs were herbivores (plant eaters), it was thought that when an asteroid hit earth and many tons of dust was thrown into the atmosphere that the result was a "long night" due to the lack of sunlight that was able to reach earth, the plants died out and without a food source, so did the dinosaurs. It could also...
Asked in English Language, Definitions, Asteroids

Do asteroid and steroid have the same etymology?

Yes and no. They both derive from an Indo-European root ster-, but there seem to be three entirely different such roots. The first ster- means stiff or hard, and is the root of steroid. Ster- 2 means spread, and is the root of strew and straw. Ster-3 means star and is the root of star and asteroid. ...
Asked in Asteroids

How big was the chicxulub asteroid?

The impacting bolide that formed the crater was at least 10 km (6 mi) in diameter and delivered an estimated energy equivalent of 100 teratons of TNT(4.2×1023 J). 4/3 pi r3 = 520 km3 ...
Asked in Asteroids

Where is there an asteroid belt in our galaxy?

The asteroid belt lies between Mars and Jupiter.
Asked in Asteroids

How asteroids impacts effect humans?

v People would have no homes and no belongings v They would need clothing, food and shelter v Many might be injured v It would cause riots from people trying to salvage things v Law enforcement would suffer v People will most likely be united to survive v Some people will be greedy v There would be an even larger pecking order v People will become more self-reliant and independent v The weaker will be killed off ...
Asked in Astronomy, Asteroids, The Difference Between

What is the difference between a meteor and a meteorite?

A meteor is a space rock that enters the Earth's atmosphere. A meteorite is the remnant of a meteor that actually reaches the surface (on land or water). A meteoroid (smaller than an asteroid) is a chunk of rock and/or ice floating about in space (ranging in size from dust to boulders) that can be billions of years old. A meteoroid becomes a meteor or "shooting star" when it starts to fall through Earth's atmosphere. It heats up by friction and air compression...
Asked in Astronomy, Asteroids, The Difference Between

What is the difference between meteor and meteorite?

Astronomers call "shooting stars" meteors. They are small bits of "dust" from space that burn up in the atmosphere. A meteorite is a piece of rock or other material from space that actually lands on Earth. ...
Asked in Physics, Asteroids, Newtons Laws of Motion

What keep asteroids moving through space?

the gravity of large masses. the large masses could be other planets or stars or our sun Their own momentum. other masses only deflect them by changing their momentum. ...
Asked in Timing Belts and Chains, Asteroids

What is the difference between a commemorative belt and a replica belt?

A Commemorative belt is the same size as the original but its made of plastic. The Replica Belt is also the same size but its made of metal, so its more authentic. ...
Asked in Physics, Atmospheric Sciences, Asteroids

Does an asteroid burn up earths atmosphere?

An asteroid doesn't burn up the atmosphere but the atmosphere burns up the asteroid. The asteroid which is moving at a very high speed due to the intense pressure change exerted over it, has a rise in temperature which reaches its igniton temperature and finally it burns out leaving a trial of light behind it. ...
Asked in Astronomy, Asteroids, Dwarf Planet Eris, The Solar System

Where is the asteroid belt located?

The asteroid belt is located between Mars and Jupiter.
Asked in Asteroids

The asteroid belt is located between the orbits of what two planets?

The asteroid belt is located roughly between the orbits of the planets Mars and Jupiter, about 2.5 to 3 AU (375 to 450 million kilometers) from the sun. It includes the dwarf planet Ceres, the protoplanets Vesta and Pallas, and several other large asteroids (minor planets). The asteroid belt region is also termed the main belt to distinguish it from other concentrations of minor planets within the solar system, such as the Kuiper belt and scattered disc. The main belt has one or...
Asked in Astronomy, Asteroids, Comets

What is an asteroid?

Asteroids, sometimes called minor planets or planetoids, are small rocky bodies in orbit around the Sun, especially in the inner Solar System; they are smaller than planets but larger than meteoroids. The term "asteroid" has historically been applied primarily to minor planets of the inner Solar System, as the outer Solar System was poorly known when it came into common usage. Most known asteroids are found in the Main Belt between Mars and Jupiter, or in the Kuiper Belt past the orbit...
Asked in Astronomy, Asteroids

Is it possible to destroy an asteroid?

It is possible in theory, but one has to wonder why. Asteroids hit Earth every year, most, if not all disintegrate in the atmosphere. Only a few reach the surface. If it's large enough and on a collision with Earth or the Moon or another planet? What are the objectives: To alter the course or to obliterate it. To attempt to obliterate an asteroid is futile, you'd just end up with billions of smaller asteroids and meteoroids spreading all over the place like a...
Asked in Asteroids, The Solar System

Where is the asteroid belt?

The main Asteroid Belt in the solar system is located between the orbits of Mars and Jupiter. It contains many millions of rocky objects and dust particles, and the dwarf planet Ceres (formerly considered simply the largest of the asteroids). However, there are other asteroids that orbit outside the main belt; some of them come in as close as Venus, and out as far as Neptune. Beyond Neptune, the Kuiper Belt contains many more icy objects, including three dwarf planets. ...
Asked in Asteroids

Is there a asteroid coming to earth?

Yes, but there is no evidence as to when or how large it will be. Ans is NASA has confirmed that the 60 meter (or 197 feet) asteroid, which was spotted by Spanish stargazers in February this year, ...
Asked in Asteroids

What is the smallest type of asteroid called?

Anything smaller than 50 meters on its longest axis is generally referred to as a meteoroid. This isn't a universally accepted terminology (yet) but it is a widely accepted convention. As far as I know it is the only naming convention for the bottom end of the size spectrum. ...
Asked in Astronomy, The Moon, Asteroids

Will elenin hit Earth?

Comet Elenin (C/2010 X1) was first discovered on December 10th by Leonid Elenin. I have not yet seen detailed descriptions of its orbit, but early calculations indicate that it will probably be visible to the naked eye in late August or early September 2011. It's not going to hit the Earth; it MAY come within about 0.4 AU but not much closer. That is not proven as we do not know the size of the meteor as NASA have not give us the...
Asked in Asteroids

What is the surface temperature of an asteroid?

A typical asteroid is -100 F or -73 C.
Asked in Asteroids, Comets, The Difference Between

What is the difference between asteroids and comets?

The main difference between asteroids and comets is what they are made of. Asteroids are made of metals and rocky material, while comets are made up of ice, dust and some rocky material. Both asteroids and comets were formed early in the history of the solar system, about 4.5 billion years ago. Asteroids formed much closer to the Sun, where it was too warm for ices to remain solid. Comets formed farther from the Sun where ices would not melt. Comets...
Asked in Planetary Science, Asteroids

What is the asteroid belt's length of day?

The asteroid belt is made up of many thousands of small rocks, each with their own unique rotational characteristics. Some may spin quite fast, while others may barely spin at all. So an apparent solar day for an individual asteroid will vary, depending on which one is being studied. ...
Asked in Asteroids

Where were most asteroids found?

the asteroid belt