Exoplanet: The Habitable Zone Of A Star

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 planet consists of a solid body that revolves around a star and shines by reflected light. The sun is the only star known to have planets, although certain other stars have companions that may be planets. The sun, nine known major planets, in order of increasing distance from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. The planets are divided into two groups according to their size and structure.

These ancient stars that may hold the key to extraterrestrial life exists in the "halo" region of the Milky Way. NASA doesn't not have the technology yet, but if they ever do get out there, they will find stars old as 10 billion years

In the article called “Another Earth” by Alice Savage and David Wiece started with the sharing of the theory that life outside of Earth could exist. The author’s son thinks that it’s possible for other living being to exist and live on other planets, but the author had this theory as just a theory until the moment when scientist found a lot of planets that can potentially have live life on them. After that, he starts to share his memories about what people thought about life outside of Earth back in the 70’s. He shares this idea that to find a planet we have to look at stars. He talks about two methods of how we can find a planet looking at a star. Planets have their gravitational pull and when they are moving around a star we can see them

This experiment was conducted to study and investigate if extraterrestrial life exists upon the exoplanet TRES 2. It was hypnotized that TRES 2 did not sustain the qualifications to support extraterrestrial existence. The results from this testing conclude the hypothesis was correct, with research as an addition from the luminosity testing it has been knowledge that TRES 2 reflects less than 1% of light making it one of the darkest exoplanets currently discovered. Light is a crucial element in the building blocks of life, it is the most important factor that influence the way life evolved on Earth. From photosynthesis, which is responsible for making producing nutrients in plantae’s and meeting our energy requirements. Furthermore TRES 2 orbits

Exoplanets are interesting to us for a number of reasons. By locating and observing them, we are able to gather a variety of useful data that tells us details about the planet, and then compare and contrast them to other exoplanets, as well as our own planet Earth. These comparisons are our attempt at better understanding the formation history of rocky planets such as the one we live on today, and furthermore understand the future of rocky planets based on their internal composition and proximity to their host stars.

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

This article discusses a new planet that could end up supporting life. This new planet is called Proxima b because it orbits a star called Proxima Centauri. Proxima Centauri is a red dwarf star. Red dwarfs are composed of “a cloud of dust and gas that is drawn together by gravity and begins rotating.” (Reed, 2016) They are called dwarfs because they only weigh “7.5 to 50 percent of the mass of the sun.” (Reed, 2016) Since these stars are small, they only reach up to 6,380 degrees Fahrenheit. Red dwarf stars can last trillions of years. “Their limited light and heat meant that the habitable zone-the region where liquid water could form, and thus life would be considered most likely to evolve.” (Reed, 2016) Proxima Centauri is an example of

Other observations were made regarding the nearby stars GJ667A and GJ667B. The age of these two stars were estimated to be between 2-10 billion years old, thus GJ667C was similar in age. The mass of GJ667C star was to be around 0.33 Msun. The luminosity and surface temperature of GJ 667C using models for the mass, metallicity, and age. The orbital data for this star showed a slightly eccentric orbit of <0.27. The boundaries were determined for the zone where liquid water could exist on an Earth-like planet and planet “c” was found within that boundary. The data was also compared to known limits that make Venus uninhabitable and Mars habitable.

From the 14 Grand Challenges listed by the NAE, the most important one, I believe, is shifting to a focus on engineering the tools of scientific discovery. It is true that while engineers create the world, scientists discover the one we have now. Why separate the two? By combining the Sciences and Engineering, we are set to discover so much more than we ever thought ourselves capable of. This has already been proven with virtually every scientific discovery that has been made true through the form of some complex apparatus, but this is further proven through this year’s TRAPPIST telescope discovery of the seven exoplanets found orbiting around a single star. While this discovery was a huge achievement for scientists, this would not have been

It can either be revolving around a stellar remnant or brown dwarf. The planet can also be a rogue planet (which do not orbit around a star) and can be considered as an exoplanet.

This is interesting because if they act more like planets then that means maybe we can use them to help us! Maybe they have resources that one day we will be able to collect and use. Also maybe we can get passed the heat and gravity to see the aurora of light that happens on the surface! The aurora is so much stronger there than here in our solar system.

Three of these planets are considered Earth-like because they are in their galaxy’s habitable zone. This means that are far enough from the sun, but also close enough to possibly have liquid water on the surface and suitable living conditions. All of these planets are about the same size as Earth, which also makes them similar to our planet. There are some differences between our galaxy and theirs, one of them being the distance between planets. This is because they are so close together that at night, people could look up and the nearest planet would appear twice as big as our full moon. One of the main problems about researching these planets is that they are roughly 39 light years away, which would take many more than just a few lifetimes to travel. While NASA’s research consists of going places and getting ready to travel to other planets, National Geographic is focused on discovering possible planets that could have good data and hopefully even life. Maybe they could come together and actually travel to the galaxy that is 39 light years away so they could have a higher chance of finding

Recently an astronomer discovered a new solar system. This solar system has seven planets, they are all earth sized. All seven planets orbit one star called TRAPPIST-1. Surprisingly only three of the seven planets are the in the habitable zone. This means these three planets could support live. Drake Deming said “It’s rather stunning that the system has so many Earth-sized planets”. Deming is an astronomer at University of Maryland in College Park. Every livable solar system we find it has a earth like planet.

This is done when such a body passes in front of its parent star, from our prospective. Light from the star interacts with different molecules in a planets or moons atmosphere. From this type of researches we can narrow down where to look for life.