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Which solar system has 62 moons?
There is only one Solar System; it is the star system with the star named Sol (our solar system). It is technically incorrect to refer to any other star system as 'a solar system.' Our star system is is also the only star system we know intimately enough (in fine enough detail) to know to have moons. It is not currently possible for us to detect moons orbiting extrasolar planets (planets orbiting other stars). There are 336 objects classified as moons in the Solar System.
Why is it difficult to take pictures of extrasolar planets?
To get a direct image of a planet, we need to gather the light it is reflecting. Planets in our own solar system are much closer and thus, they appear bigger - and they can often be found far enough away from where the Sun appears to be, so that the Sun's light doesn't affect the imaging effort.However, when a star is many light years away, and a planet is around it, it will appear very, very close to its parent star - which is essentially blinding it out.Imaging trying to gather the light reflected off a grain of sand which is sitting next to a large flashlight shining in your face.
In which constellation will you find the bright star?
There are several bright stars. Planets move around the Ecliptic, covering 13 constellations or so. Note that planets look like stars, but are not currently considered stars. Also note that some of the planets look brighter (to us) than any real star. Other than planets, the brightest stars are the Sun (also changes through the constellations of the Ecliptic), Sirius (Canis Major), Canopus (Carina), and Toliman (Centaurus).
How do you know which stars have planets?
What an excellent question. It appears you already realize that if you are talking about stars other than our sun, you are talking about stars that are many lightyears away from us, and not even powerful telescopes will easily detect planets orbiting around them. One thing that astronomers can sometimes detect is the slight wobble of distant stars as planets orbit around them. You might not realize that suns would move as a result of a planet's orbit. Imagine you and a friend holding on to the ends of a rope. If you begin to move in a circle, you will each feel the centripedal force pushing you outward. Neither of you would be able to stand perfectly still while the other circled with the rope. Another thing that astronomers can detect using very sensitive equipment is the slight reduction in brightness of a star when a planet's orbit brings the planet between us and its star. If this reduction in brightness is regular enough, it may be an indication that there is a planet in orbit.
Why is the sun going to kill us?
Because in about 5 billion years, the sun will die and become a giant or supergiant and become a supernova and since we are close to the sun, the supernova could destroy the planets that are orbiting the sun.
How do you know that stars have planets?
In a very few recent cases we have directly observed the planets. Most exoplanets (planets orbiting other stars) are detected through periodic wobbles in the light of the star as the planet makes its way around. That may change this month with the launch of the Kepler satellite later today. The third way to detect planets is by their transits. If the distant planet crosses in front of the star and us, the star light dims in a characteristic manner. Kepler will observe thousands and thousands of stars for transits.
Which solar system has 62 moons?
There is only one Solar System; it is the star system with the star named Sol (our solar system). It is technically incorrect to refer to any other star system as 'a solar system.' Our star system is is also the only star system we know intimately enough (in fine enough detail) to know to have moons. It is not currently possible for us to detect moons orbiting extrasolar planets (planets orbiting other stars). There are 336 objects classified as moons in the Solar System.
Spectrographs help astronomers determine a star's what?
The star's chemical composition; the star's rotation; pulsations of the star; planets or other invisible objects moving around the star; how quickly the star is moving towards us or away from us.
What can you tell from a star by observing it?
It's locationIt's colourIt's temperatureIt's spectral classIt's luminosityIt's distance from us, using standard candles.It's sizeIf it has any planets orbiting it (Within a reasonable distance)
Why do the positions of the planets change in relation to the background of stars?
They change position against the background of the distant stars because they are much closer to us, and they are orbiting around the sun, as are we.
Is all the stars in the sky planets?
No, they are very much like our own star which we call the sun. They are so far away that they do not provide us with light and heat like our own star, the sun. The only planets you can see from earth with the naked eye are our own planets which, like us, revolve around the sun.
Which planet has the most planets orbiting it?
In our solar system, the dwarf planets Pluto and Charon orbit each other around a common center of gravity located in the empty space between them. As the only binary planets in our solar system, that makes Pluto and Charon share the title as having the most planets orbiting another planet. Planet like objects that orbit planets, without them orbiting each other, are called moons. The title for the planet with most moons, is passed back and forth between Jupiter and Saturn, as new (to us) and ever smaller moons are discovered. Currently, Jupiter holds the title with 63 moons.
Why is it difficult to take pictures of extrasolar planets?
To get a direct image of a planet, we need to gather the light it is reflecting. Planets in our own solar system are much closer and thus, they appear bigger - and they can often be found far enough away from where the Sun appears to be, so that the Sun's light doesn't affect the imaging effort.However, when a star is many light years away, and a planet is around it, it will appear very, very close to its parent star - which is essentially blinding it out.Imaging trying to gather the light reflected off a grain of sand which is sitting next to a large flashlight shining in your face.
What goes around the house and in the house but never touches?
The Sun and Moon and thus any other spacial object either orbiting us or we are orbiting it.
What is the closest planet to the north of earth?
All the planets go round in a plane, like a big flat dinner plate, with the Sun at the centre. Because the Earth's axis is tilted by 23 degrees, all the planets are sometimes to the north and at other times to the south.
Why is the sun the brightest star?
The Sun isn't the brightest star, actually it's considered quite dim in relation to other stars.It appears brightest as it is closer to earth. There are other stars, some bigger or smaller, brighter or duller, in the vastness of the universe outside our rather small collection of planets orbiting our sun.
What evidence have astronomers used to conclude that there are planets around other stars?
Astronomers today use equipment that is sensitive enough to detect extremely small changes in the brightness from a distant star. When a distant star looses a tiny bit of its apparent brightness at regular intervals, and the change lasts the same amount of time each time, there is probably a planet periodically passing between the star and us. All matter gravitationally attracts all other matter. The magnitude of an object's gravitational pull depends on the mass of the object and the square of the distance from the center of the object to the center of whatever it is attracting. Usually a planet orbiting a star does not have enough mass compared to the mass of the star to have any discernible effect on the motion of the star. However, some planets are so massive that astronomers can detect a slight back and forth movement of the star as the planet orbits it.
