51 Pegasi B Exoplanet

NASA discovered a system of seven Earth-size planets around a single star outside our solar system. All of these seven rocky planets could have water which is a key to life and three of them are firmly located in the habitable zone. This system is about 40 light-years (235 trillion miles) from Earth. Because of locating outside of our solar system, these planets are scientifically known as exoplanets. This exoplanet system is called TRAPPIST-1, name of telescope in Chile. Researchers using TRAPPIST announced they had discovered three planets in the system and then discovered more to seven by several ground-based telescopes. Moreover, NASA used data from Spitzer to measure the sizes of the seven planets and estimates the masses and density of six of them. The data indicated that they are likely to be rocky and could have liquid water on their surfaces but the mass of the seventh has not been estimated yet. Scientists assumed it could be an icy like snowball world. The temperature of TRAPPIST-1 star is cooler than our sun,

A red dwarf star’s HZ, for example, would be much closer to the star itself compared with that of our sun. It is also important to determine the planet’s size and mass, which is imperative in deciding whether it can sustain an atmosphere. Maintaining an atmosphere is essential for life to exist and small a planet with a small gravitational force at its surface may not be capable of retaining one. The Kepler transit data can only measure planet masses, diameters, orbital periods, and parent star types and although this information is useful for determining habitable zones, further data is required to determine true habitability. The latter can be done by studying the composition of the exoplanet’s atmosphere.

Michel Mayor and Didier Queloz established another milestone, recording 51 Pegasi b, also known as Bellerophon, as the first established exoplanet in 1995. Located about 50 million light years away in the constellation Pegasus, Bellerophon is known as the first planet outside our solar system that orbits a star similar to our sun with the help of spectroscopy. Spectroscopy is described as the study of communication amongst matter and electromagnetic radiation. It used to consider visible light scattered according to its wavelength by a prism, but later the idea was developed to contain any contact with radiative energy as a function of its wavelength or frequency. Technological advances, most notably in high-resolution spectroscopy, led to

The foreground planet would help us detect formation, evolution and the dynamics of a planetary system. This event is due to the position of a planet in respect to its parent star, if the foreground planet is smaller than the background star it is known as a transit, instead of an occultation. An example would be the occultation of Regulus by

Furthermore, scientists have this big prediction in which they think that in about ten years they will prove themselves right. Technology develops more and more each day and in about ten years scientist might have advanced tools to travel through space and discover more. In some planets that scientists have discovered, they had found a gas giant. “A gas giant is a planet that is mainly composed of Helium and Hydrogen.” An example of a planet that has gas giants would be Jupiter, Saturn, Uranus, and Neptune. If a gas giant is found in a planet, the gas giant can give many characteristics to the planet. A planet that contains a gas giant could be big and cold, sometimes the characteristic of the planet gives scientist a big clue that there is no life in that planet. For example, if the weather is to cold in that planet or if there is

As we know that super-Earth doesn’t mean Earth like planet, it can be much better. They’re extrasolar planets whose mass is greater than Earth’s, yet much lesser than our solar system’s ice giants Neptune and Uranus, which have a very high mass that it can easily fit 17 and 15 Earths, respectively (note that Uranus is bigger than Neptune but it is less massive). Since the category only speaks to the exoplanet’s mass, we can’t say anything about an exoplanet’s surface conditions. It’s big, but may or may not be suitable to sustain

Doppler method is an indirect method to find out the extrasolar planets from observing and measurement the changing color of the light that orbiting planets cause stars to wobble in space.Gliese 667 Cc is one of the extrasolar planets that found by using the radial velocity method, from measurements and observation of Doppler shifts in the spectrum of the planet's parent star. Doppler shift is a change in frequency due to the Doppler effect. When a star moves toward Earth, its spectrum is blueshifted, while it is redshifted when it moves away from the Earth. Gliese 667 Cc is orbiting within the habitable zone of the red dwarf star. It is about 217,000,000,000,000 km away in the constellation of Scorpius. Gliese 667 Cc has a mass of 3.709M⊕,

The 7th planet from the sun, Uranus, is the coldest planet of the eight, at -216 degrees Celsius, a gas giant, and typically described as “rolling around the sun on it’s side”. This is because Uranus is tilted on its side at a 98 degree angle so it appears to be rotating around the sun, every 30,687 days, on it’s side. Uranus is one of the four gas giants in the solar system, and is made up of the same gases, helium and hydrogen. (9) However, Uranus’ equatorial diameter is 51,118 km, and is much smaller than Saturn and Jupiter. Uranus is observed easily using binoculars, and can be easily followed through the night sky. However, many scientists believe the best way to view Uranus is through a telescope, because of its fascinating bluish-turquoise

An exoplanet is a planet that orbits a star that is out with our solar system. A large number of exoplanets have been discovered so far, however it is exoplanets that are within the star’s habitable zone that are the most sought after. An exoplanet is considered to be within the habitable zone if it is at an orbital distance from the star it orbits that allows it to be at a surface temperature that can support water in its liquid state. If the exoplanet is too close to the star any water will boil and evaporate, while if it is too far away the planet will be

The Kepler telescope helps discover planets beyond our solar system. NASA launched Kepler in March 2009. The telescope, which is about 9 feet in diameter and 15.3 feet in height, now orbits the sun every 371 days. It observes 100,000 stars in a portion of our Milky Way galaxy to check whether the planets revolve around the stars. Kepler is explicitly looking for planets that could support life. For this, the worlds must meet two conditions: they should be small enough to sustain life, which is about the size of Earth, and they should be in the "habitable zone" of their stars. In the habitable zone, conditions on the planet, such as temperature, would be accurate for the presence of liquid water, and possibly life forms. When an orbiting planet

The transit method for exoplanet detection is a direct observation method. When an orbiting planet passes in between the planet's star and the earth during the planet's transit, there is an observable dimming in light given off by the star. Scientists can use the degree to which light is dimmed during a specific regular interval to determine aspects of the planet such as the size. Changes in brightness are observable if/when an exoplanet transits between its star and earth. Scientists use the change in brightness to determine the size of a .

Ever since I was a young child I was always intrigued by space. Just like many children I wanted to be an astronaut when I grew up. It was just fascinating to me to go off and explore. From a young age, I knew the Universe was infinite but tapped into the basic human instinct to explore. I would play with models, and use computer programs to look at planets and stars. I was given a telescope when I was ten or eleven for Christmas and became even more entrenched with space. It was just always fascinating to me and to this day it still is. That’s why when NASA announced that they had found seven exoplanets orbiting a star not too far away, called Trappist.

The larger planets are toward the outside of the solar system because they have more mass than the other planets. Since they have more mass they have more force, and with more force the planets accelerate and move farther away from the sun. Also, the larger planets are gaseous planets which can only form further away from the sun. These planets can only form away from the sun because the temperature is cold enough for the planets to condense and become real planets. With the temperature being so cold the gaseous planets can grow larger unlike the inner planets. If the outer planets were too close to the sun the gases would expand and there would be no more gaseous planets.

Also look at the distance the planet is from the star (habitual zone), it needs to be ther right amount of distance so that it can sustain water at least on part of its surface.

Now having known of exoplanets, what are they? How many are there? Say approximately one star holds one exoplanet in its orbit, then multiply this by 300 billion stars per galaxy, and then multiply this by the amount of galaxies in our universe; this is the expanse of the exoplanets we are dealing with. The first discovery of a planet outside the