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Find the odd man out in the following rocket star planet comet

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The bizarrechemical make-up of a comet suggests the blob of ice is an interloper, possiblyflung into our solar system from beyond, astronomers now say, adding that thewacky comet is forcing them to create a new category for such objects. Since then, the icy denizen has made a few appearances, including onein Theoddball, described in the November issue of the Astronomical Journal ,could shed light on the formation and evolutionof comets. These blobs of dustand frozen gases may be the oldest, most primitive bodies in the solarsystem.

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SEE VIDEO BY TOPIC: Odd Man Out Aptitude Questions - ICET 2020 Exam Questions and Answers - #2

Retrograde and prograde motion

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Formation of the Solar System The Solar System Today When we make a list of the characteristics of the solar system as we see it today, we find the following facts: The planet orbits have the following characteristics They all go around the Sun in the same direction right hand rule. The right hand rule is this: point your thumb in the direction of the north pole, and the object rotates or revolves in the direction that your fingers curl.

The Sun rotates in this same, right-hand-rule direction. All planetary orbits lie in nearly the same plane. All planetary orbits are nearly circular eccentricity near zero. The planets spin on axes that are tilted randomly from this direction, but most obey right hand rule. Almost all moons orbit their planet in the same, right-hand-rule sense, and near the planet's equatorial plane. The asteroids orbit mostly in the asteroid belt between Mars and Jupiter.

They obey most of the rules for terrestrial planets. They are rocky or metallic objects. Comets orbit in all directions, with highly inclined, eccentric orbits. They are icy objects, with hydrogen compounds. They appear to come from a spherical cloud called the Oort Cloud. All orbit close to the ecliptic plane, beyond Neptune. Lecture Question 1. For a good interactive introduction to this theory, select the Formation of the Solar System tutorial on Astronomy Place web site and go through it.

When you are finished with this tutorial, you should know that the solar system formed from a cloud, or nebula as the cloud collapsed due to gravity it heated up by converting gravitational potential energy to heat a form of kinetic energy spun faster and faster due to conservation of angular momentum flattened into a disk also due to conservation of angular momentum the disk was hotter in the center and cooler in the outer parts which beyond the "rock line" K , allowed only rocky and metallic flakes to condense beyond about 0.

They could grow to be giant planets, with rock, metal, ice, AND gases eventually, the Sun became a star and the young stellar wind blew the gases away, stopping the planet formation process.

Pluto never grew large enough to attract gases, so it never became a giant planet. It and other KBO's are left over remnants, along with asteroids and comets--pieces that never became parts of planets. Evidence for the Nebular Theory We can look out at other stars, with the tremendous instruments available today, and see many of the features of this theory in progress. We can also look at left-over pieces of the solar system that fall to Earth meteorites.

Let's look at a few: Stellar nursery Orion nebula Stellar disks More disks Things that Do Not Quite Fit As long as we had only one solar system to explain, we could adjust the nebular theory to be a great fit.

But what happens when we discover other solar systems. Do they match the scenario? In just the last 5 or 6 years, new techniques have been developed to detect planets around other stars. We mentioned them earlier, in the first lecture see list.

The technique uses the "wobble" of a star due to the gravitational influence of an orbiting planet, detected by a periodic doppler shift of spectral lines. Here is an older overview , latest one showing only about half of the planetary systems now detected. Here is an artist's conception of 51 Pegasi. We have detected many stars with planets, but the planets are gas giant jovian type planets, some very close to the star.

In what ways does this violate the nebular theory model? No one yet knows how such planets could form, but here are a couple of possibilities-- If the nebula starts out with more than one center, then the larger one could end up as a star while a smaller one collapses in place to form a planet. The planet would not have to form from the bottom up, starting with flakes. A planetary collision between two very large "planetesimals" could cause one to move in close to the star while the other is ejected from the newly forming solar system.

One might expect these planets to have a very eccentric orbit. Why do we see so many of these solar systems that are so different from ours.

Is ours the odd-ball? Maybe not. The method for finding planets can so far only detect large, close-in planets, so it is not surprising that those are the kind we see. We could not detect solar systems like ours with present techniques. But we are exploring ways to do better, and we hope to detect Earth-like planets some day. One thing is certain--this is an exciting time to be alive, to discover more about how we came to be here, and what other possible solar system types there are. Lecture Question 2.

Remnants of the Solar System Remnants of Formation. The small bodies of the solar system are the leftovers in the process of solar system formation. We saw that during the formation, small flakes of ices, rock, and metal gradually combined to make planetesimals, which in turn combined to form the planets.

Some of these small planetesimals, the building blocks of planets, survived in the form of asteroids, comets, and other bodies. They bring up several questions, for which we have to look at the following clues:. These remnants of the solar system come in several distinct types, with the following properties:. How did these orbits come to be? Both asteroids and KBOs were formed where they are now, but they continue to undergo collisions and gravitational perturbations that can "scatter" some of them.

This has the effect of flinging them about the solar system, so that some pass nearby the Earth, and sometimes even hit us! Comets from the Oort Cloud have a different origin. We think that they were initially formed in the region between Jupiter and Neptune the gas giant planets , and were flung far out into space due to near-miss collisions with those planets. There may be as many as one trillion comets in the Oort Cloud! Lecture Question 3. Asteroids Several spacecraft have flown past asteroids on the way to the outer solar system, and one the NEAR spacecraft actually orbited one for over 1 year, and eventually landed on it!

Here are some close-up images of a few asteroids:. Not all asteroids look like this, however. The larger ones are so large that their gravity forces them into a spherical shape.

Any object with a radius of more than km will be spherical. Comets Comets can best be described as "dirty snowballs" typically of a few km in size, although they can range in size all the way up to Pluto. Comets spend most of their time far from the Sun recall that objects move slowest when at aphelion where they remain inert icy snowballs.

As they approach the Sun, they move ever faster, and spend only a few weeks in the hotter part of the solar system. There, the ices of volatile compounds water ice, methane ice, frozen carbon dioxide, frozen ammonia, etc. These gases jet out from the interior, and sometimes break off chunks of the rocky parts. Comets are fragile!

Several have been seen to break up, and some have disappeared completely, as we will see below. Two Tails Comets have two tails, as shown in the image below -- a ionized gas tail the blue, straight tail and a dust tail the white, curved tail. They start out very small, and grow larger and longer as the comet nears the Sun. Comets and Meteor Showers The dust from a comet stretches all along its orbit, so when Earth crosses the orbit of a comet, these dust and fine grained particles hit the Earth's atmosphere and burn up as meteors.

This is what causes meteor showers. The Earth crosses the orbits of several comets each year, at the same time of year each year. That is how we know when meteor showers will occur.

Images of some famous comets. We have found a number of larger objects, which are spherical in shape. Smaller objects, similar to the asteroids, also no doubt exist but are too small and dim to see from Earth.

We have many ways to learn what these objects are made of. We can look at the reflected light from them, which can be matched roughly to rock, metal, and ices.

We can also measure the IR radiation that they radiate. But the best way to know what asteroids are made of is to find pieces of them that fall to Earth as meteorites. We find that some are made of undifferentiated rock and metal flakes, and were never part of a larger object.

Others are differentiated separated into pure rocks and pure metals , and so were part of the larger, spherical asteroids such as Vesta. Here is an idea of the history of Vesta:. Broken chunks of the interiors of asteroids could be a source of valuable metals and minerals, possibly making mining of asteroids economical in the future. Were the asteroids all part of a single planet that broke up?

In addition, we do not know how such a body could break up entirely. Even a collision between two large objects would not scatter the pieces in the way we see them, but would leave the pieces in a similar orbit that eventually would recombine. Instead, we believe that the asteroids are a planet that did not finish forming before the young Sun's wind blew the remaining solar nebula out into interstellar space.

It is even easier to determine what comets are made of, because we can see the volatile gases that come from them when they heat up as they near the Sun. We can also study the light reflected from the dust of comets. We already mentioned that comets are made of the ices of volatile compounds water ice, methane ice, frozen carbon dioxide, frozen ammonia , things that we expect to be present in the solar nebula from which the solar system formed.

So we see that we can explain the orbital dynamics, structure, and chemical makeup of the small bodies of the solar system in terms of the Nebular Theory of the formation of the Solar System.

But if so, there are a lot of clues out there that need to fit our understanding. So astronomers and space scientists are very interested in studying these primordial pieces of the solar nebula up close.

Missions to collect comet dust, or return samples of comets and asteroids, are now being planned. Lecture Question 4.

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Need online help with writing an Astronomy research project? This can really be a lot of different answers. However, this is all dependant on whether or not you have a clear view across the universe- which would be really difficult!

About 4 a. If the discovery holds up, the object, named CD3 for now, would be the second mini-moon ever found.

Objects of interstellar origin in our own Solar System continue to draw attention. Centaurs, most of which do not occupy such extreme positions, are a population of asteroids moving between the outer planets in what have until now been considered unstable orbits. In those days, the Sun would have been part of a star cluster, with many young stars in close proximity. The authors believe they can identify 19 asteroids that once orbited other stars and now orbit the Sun. The new study extends their simulations to the past orbits of 17 high-inclination Centaurs and two trans-Neptunian objects KV42 and KT19 with polar orbits.

Odd Comet Possibly from Another Star System

Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary , that is, the central object right figure. It may also describe other motions such as precession or nutation of an object's rotational axis. Prograde or direct motion is more normal motion in the same direction as the primary rotates. However, "retrograde" and "prograde" can also refer to an object other than the primary if so described. The direction of rotation is determined by an inertial frame of reference , such as distant fixed stars. In our Solar System , the orbits about the Sun of all planets and most other objects, except many comets , are prograde, i. The rotations of most planets, except Venus and Uranus , are also prograde.

Odd Man Out - Aptitude Questions and Answers

Formation of the Solar System The Solar System Today When we make a list of the characteristics of the solar system as we see it today, we find the following facts: The planet orbits have the following characteristics They all go around the Sun in the same direction right hand rule. The right hand rule is this: point your thumb in the direction of the north pole, and the object rotates or revolves in the direction that your fingers curl. The Sun rotates in this same, right-hand-rule direction. All planetary orbits lie in nearly the same plane. All planetary orbits are nearly circular eccentricity near zero.

Due to complicated gravitational interactions from planets and other bodies, it's expected that our Solar System has ejected various small bodies like comets and asteroids. Since exosolar systems are likely to do the same, it's thought that the vast distances of interstellar space are sparsely populated by these small bodies.

Fully solved examples with detailed answer description. Here you can find both objective type and Multiple Choice Aptitude Odd Man Out questions and answers for interview and entrance examination. True or false type questions are also provided here.

Nine Planets – Astronomy Question

Toggle navigation. You can change your option as many times as you like. Find the odd one out from the given alternatives.

A big comet or asteroid crashed into Earth about 65 million years ago. Scientists think this impact may be why the dinosaurs all died. But much earlier in Earth's history, times were worse. Earth had one bad day after another getting hammered by comets, asteroids, and even bigger chunks of rock. Could these space invaders have brought more than death to dinosaurs?

Thirsty? Have a comet!

In every competitive exam, Odd Man Out type questions are very common. In odd man out problems all the items given in the question except one follow a certain pattern or a group. That means out of the all given elements, one will not fall into the group due to some difference in the property. That is the odd element. Hence, it is the odd one. From the above, the second one is the feminine of the first one except the first pair. So the answer will be a.

Apr 27, - Comets from other stars like 2I/Borisov give us the chance to delve into the while the odd 'Oumuamua still puzzles astronomers. Comet? Asteroid? moving perpendicular to the orbital plane of the planets and other asteroids. for stable orbits, to find out whether any could have survived from the days of.

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New comet is our second interstellar visitor

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