Earth an inhabitable planet ppt

Earth is a terrestrial planet, not a gas giant Mass of Planets need to be Just Right for Life Low Mass Bad news for life Lesser gravity - difficult for atmosphere retention Smaller planets lose energy from formation quickly geologically dead Approximately 0.3 Earth masses needed to sustain life Mass of Earth High Mass Earth is largest by mass. EARTH Earth is the only planet to be named in English. The word 'Earth' is Old English word for land Earth belongs to the Milky Way Galaxy Earth is the only planet to sustain life. 3. SHAPE OF THE EARTH The study of size and shape of earth is called geodesy. Before 500 BC, people thought that earth was flat

Earth 1. Presentation by: Heather DeRoy 2. Discovery of New Planet! Planet Earth, a part of a Solar System, is a possible candidate for life 3. Let's investigate whether life is possible on this new planet, Earth! 4. Let's investigate the location of planet Earth to see if it is a possible location for life to form! 5 What makes the Earth habitable? Water supply Surface temperature Oxygen gas Energy reserves Water Water is the main ingredient needed for life: 1) Planet must have captured enough water to make oceans 2) Water must have migrated to the Earths surface 3) Water must not have been lost to space 4) Temperature needs to be above freezing and below boiling Earth is 1.5 weight percent water (captured. The planet, more than four times the mass of the Earth, is one of three that the team detected around a red dwarf star called Wolf 1061. While a few other planets have been found that orbit stars closer to us than Wolf 1061, those planets are not considered to be remotely habitable Earth third planet from the sun has one moon fifth largest planet in our Solar System Earth's atmosphere is mainly made up of nitrogen, oxygen, and water vapor. There is a small amount of ozone in our atmosphere and this is what filters some of the damaging radiation from the Sun. The only planet in the solar system with an atmosphere that.

Earth Plate Tectonics Blue Planet Early Archean Silicate Tetrahedron Earth's Atmosphere The gaseous area surrounding the planet is divided into several concentric spherical strata separated by narrow transition zones. The upper boundary at which gases disperse into space lies at an altitude of approximately 1000 km above sea level That planet, nicknamed KOI 5715.01, is 5.5 billion years old and 1.8 times larger than Earth. Its average temperature is a crisp 53.3 degrees and it's just 2,964 light-years away from us

A planet's habitability, or ability to harbor life, results from a complex network of interactions between the planet itself, the system it's a part of, and the star it orbits. The standard definition for a habitable planet is one that can sustain life for a significant period of time A special planet: the habitable Earth What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon Nine percent, or 8,710, of the digital planets were found to be habitable for three billion years in at least of their 100 simulated runs. Of these, roughly 8,000 worlds had a success rate of less. The earth has experienced five mass extinctions before the one we are living through now, each so complete a wiping of the fossil record that it functioned as an evolutionary reset, the planet's. How many habitable planets are there? Water is the basis of life in any part of the universe. So potentially inhabited planets must have liquid water on them..

Unit 1. Planet Earth - SlideShar

  1. A habitable planet has abiotic factors (non-living) and characteristics that are just right for allowing life to exist. Earth is the only known planet at this time. What makes Earth just right? Draw and label a diagram of the planets going across your paper in order with the sun on the left
  2. Earth probably isn't the best place in the universe. It turns out there might be even better places to live that are even more suitable for life: superhabita..
  3. Many rocky planets have been detected in Earth's size-range: a point in favor of possible life. Based on what we've observed in our own solar system, large, gaseous worlds like Jupiter seem far less likely to offer habitable conditions. But most of these Earth-sized worlds have been detected orbiting red-dwarf stars; Earth-sized planets in.
  4. This is a list of potentially habitable exoplanets.The list is mostly based on estimates of habitability by the Habitable Exoplanets Catalog (HEC), and data from the NASA Exoplanet Archive.The HEC is maintained by the Planetary Habitability Laboratory at the University of Puerto Rico at Arecibo.. Surface planetary habitability is thought to require orbiting at the right distance from the host.
  5. Today's lecture will be in 2 parts: Formation of the planets, and Earth's interior [PPT: 2 images and questions]. Part I: Formation of the planets What do we need to build a habitable planet? A popular (n=1) recipe: 1. Stable Energy source: Central star should not be too hot, not too cold (4000-700
  6. The planet candidate Tau Ceti e, which was detected in December 2012, is found just 11.9 light-years from Earth. This world is a super-Earth at least 4.3 times as massive as Earth

The planet earth - SlideShar

  1. A 3D model of Earth, our home planet. NASA. NASA Science Solar System Exploration. Skip Navigation. menu close modal Resources Earth 3D Model Source: NASA Visualization Technology Applications and Development (VTAD) Published: April 22, 2019 A 3D model of Earth, our home planet. Downloads. glTF File (3D Model
  2. Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and maintain environments hospitable to life. Life may be generated directly on a planet or satellite endogenously or be transferred to it from another body, through a hypothetical process known as panspermia. Environments do not need to contain life to be considered habitable nor are accepted.
  3. Rather than focus on Earth clones, the team searched for planets that are more massive than our own. One that is about 1.5 times Earth's mass would be expected to retain its interior heating.
  4. Save Earth found in: Simple Ways To Save The Planet Earth Ppt PowerPoint Presentation Show Sample, Protect Earth Environment PowerPoint Templates And PowerPoint Backgrounds 0411, Plant More Trees To Save Earth Ppt PowerPoint.
  5. osity.An uncertain factor is the continuous influence of.
  6. 10. Tau Ceti e. ESI: 0.78. Discovered in 2012, this unconfirmed exoplanet candidate is one of the most potentially habitable planets being about four times as massive as Earth, making it a Super Earth. It lies just 11.905 light years from Earth and is the fourth planet of the system in distance to its star, the Tau Ceti
  7. Based on photometric data from NASA's TESS satellite, a new planet - TOI-824b - is discovered transiting across the face of its host star every 1.4 days, with radius three times the Earth's. Follow-up radial velocity observations find its mass is 18.5x the Earth's - a Neptune-like planet orbiting >1000x closer to its parent than.

Earth - SlideShar

Why Earth Is Habitable Atmosphere Planetary Habitabilit

12.1 Earth in Space - 12.1 Earth in Space 12.2 Gravity and Motion 12.3 Phases, Eclipses, and Tides 12.4 Earth s Moon Chapter Preview 12.1 Earth in Space 12.2 Gravity and Motion | PowerPoint PPT presentation | free to view. Planet Earth - It takes 23.9345 hours for the earth to rotate a complete revolution A 3D model of Earth, our home planet. NASA. NASA Science Solar System Exploration. Skip Navigation. menu close modal Resources Earth 3D Model Source: NASA Visualization Technology Applications and Development (VTAD) Published: April 22, 2019 A 3D model of Earth, our home planet. Downloads. glTF File (3D Model

The nearest potentially habitable planet to Earth

  1. ESO Discovers Earth-Size Planet in Habitable Zone of Nearest Star. This artist's impression shows a view of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the solar system. The double star Alpha Centauri AB also appears in the image. Proxima b is a little more massive than the Earth and.
  2. And that, in turn, will make the Earth even hotter, leading to catastrophic 'runaway' heating that eventually evaporates the oceans. Simple computer models initially suggested this disaster could render our planet inhospitable in as little as 150 million years from now. But late last year the journal Nature published a much more.
  3. ESO Discovers Earth-Size Planet in Habitable Zone of Nearest Star. Aug 24, 2016. This artist's impression shows a view of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the solar system. The double star Alpha Centauri AB also appears in the image. Credit: ESO/M. Kornmesser

Photographs of Earth taken from space show that our planet is a single sys-tem. When students observe Earth from this perspective, they can readily see oceans, clouds, and continents that are lit by sunlight, the energy that supports life on Earth. We do not know of any other planet that has water and an atmosphere like Earth's A team of transatlantic scientists, using reanalyzed data from NASA's Kepler space telescope, has discovered an Earth-size exoplanet orbiting in its star's habitable zone, the area around a star where a rocky planet could support liquid water Kepler-69c is a super-Earth-size planet similar to Venus. The planet is found in the habitable zone of a star like our sun, approximately 2,700 light years from Earth in the constellation Cygnus Clouds' reflective qualities cool the planet and mean the habitable zone can be closer to a star. Both these planets have greenhouse gases present in their atmospheres, warming the planet up and. There is no better choice but stay put and perished if Earth became uninhabitable during the next one or two hundred years from now. The Sun has a planetary system of eight planets but miraculously and on extra ordinary event only one planet with.

Hansen began his career studying Venus, which was once a very Earth-like planet with plenty of life-supporting water before runaway climate change rapidly transformed it into an arid and. Or if you're feeling adventurous, you can try Earth anyway by choosing an option below. Launch Wasm Multiple Threaded Launch Wasm Single Threaded Learn more about Google Earth The planet, named Kepler-186f orbits an M dwarf, or red dwarf, a class of stars that makes up 70 percent of the stars in the Milky Way galaxy. The discovery of Kepler-186f confirms that planets the size of Earth exist in the habitable zone of stars other than our sun. The habitable zone is defined as the range of distances from a star where. The artist's concept depicts Kepler-62e, a super-Earth planet in the habitable zone of a star smaller and cooler than the sun, located about 1,200 light-years from Earth in the constellation Lyra.

NASA's planet-hunting mission TESS has found its first potentially habitable exoplanet the size of Earth orbiting a star about 100 light-years from Earth, according to the agency A potentially habitable Earth-sized exoplanet is similar in size and temperature to Earth, according to a new study. The planet is located 300 light-years away from us Brigitte Fernandes. In the latest study researchers have revealed that Earth is not necessarily the best planet in the universe for life. Scientists have found some 24 planets that are 'superhabitable' and offer conditions more suitable for life than on Earth. Some of the new planets even have better stars than the Sun, the researchers claimed As many as six billion Earth-like planets in our galaxy, according to new estimates. Jun 16, 2020. Astronomy student discovers 17 new planets, including Earth-sized world. Feb 28, 2020 The Kepler-69 system has two planets; 69b and 69c. Kepler-62e, 62f and 69c are the super-Earth-sized planets. Two of the newly discovered planets orbit a star smaller and cooler than the sun. Kepler-62f is only 40 percent larger than Earth, making it the exoplanet closest to the size of our planet known in the habitable zone of another star

Earth—our home planet— is the third planet from the Sun, and the only place we know of so far that's inhabited by living things. While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with abundant liquid water on the surface. Just slightly larger than nearby Venus, Earth is the biggest. If the odds of a habitable-zone world being actually inhabitable by humans is even one-in-a-million, then there are tens of thousands of worlds in the Milky Way alone that could be our Earth 2.0.

Keep track of Earth's vital signs, see the planet in a state of flux and slow the pace of global warming with NASA's free mobile apps. Climate Time Machine Travel through Earth's recent climate history and see how increasing carbon dioxide, global temperature and sea ice have changed over time October 29, 2020, Mountain View, CA - Thanks to new research using data from the Kepler space telescope, it's estimated that there could be as many as 300 million potentially habitable planets in our galaxy. Some could even be pretty close, with several likely within 30 light-years of our Sun. The findings will be published in The Astronomical Journal, and research was a collaboration of. The planet, Proxima b, has a mass of 1.17 earth masses and is located in the habitable zone of its star. This breakthrough has been possible thanks to measurements using ESPRESSO, the most.

This planet is about 40 percent larger than Earth and orbits a star much cooler than our sun. Its 267-day orbit, however, puts Kepler-62f squarely within the habitable zone. The Kepler-62 system. Looking for planets that might support life is one of the primary and most exciting goals of planet-hunting. And so astronomers want to know which stars are the most likely to have habitable planets Also, it is a mere 4.22 light-years, or nearly 25 trillion miles, from Earth. This newly discovered planet is by far the closest potentially habitable planet ever detected outside our solar system. Just a cosmic hop, skip and jump away, an Earth-size planet orbits the closest star to our sun, Proxima Centauri. Ever since the discovery of the exoplanet — known as Proxima Centauri b — in.

A superhabitable planet is a hypothetical type of exoplanet or exomoon that may be better suited than Earth for the emergence and evolution of life.The concept was introduced in 2014 by René Heller and John Armstrong, who have criticized the language used in the search for habitable planets and proposed clarifications. According to Heller and Armstrong, knowing whether or not a planet is in. Astronomers analyzed all four years of Kepler data in search of Earth-size planets in the habitable zones of sun-like stars, and then rigorously tested how many planets they may have missed. Based. A NASA satellite has found evidence of a planet in another solar system -- referred to as an exoplanet -- that is roughly similar in size to Earth. The exoplanet is reportedly far enough away from its sun that it could potentially support life, Space reports. The Transiting Exoplanet Survey Satellite, or TESS, has been scouring the skies for evidence of exoplanets for a couple of years now Geology helps astronomers find habitable planets: Findings will help better identify Earth-like planets that could sustain life. ScienceDaily . Retrieved July 6, 2021 from www.sciencedaily.com.

The Earth as a Planet Basic Properties (size, density, composition) Interior structure Interior dynamics Atmosphere Formation and Evolution How to find the basic parameters? Why is the Earth still hot? Structure of the Earth's Interior Motions of the Earth's crust The Earth's Atmosphere The Greenhouse Effect Carbon Dioxide is a critical. Earth Plate Tectonics Blue Planet Early Archean Silicate Tetrahedron Earth's Atmosphere The gaseous area surrounding the planet is divided into several concentric spherical strata separated by narrow transition zones. The upper boundary at which gases disperse into space lies at an altitude of approximately 1000 km above sea level

The Earth is a medium-sized planet with a diameter of 13,000 km Seismic waves are waves that spread through the interior of the Earth from - A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 26d03-ZmMx Planet Earth. Transcript: Hydrosphere Geosphere Atmosphere Rotation: it rotates on a slighty tilted axis, it originates the day and the night The average tempearture is 15 ºC A lunar month is the period of time between two new moons. It has a water cycle Has a natural satelite called the Moon Felix Exists LIFE The hydrosphere is all the water on, under and above the Earth It has a magnetc. Deep Hubble Space Telescope Image Using the Doppler Effect to Measure Velocity Blueshift Redshift Calcium Magnesium Sodium Galaxy Spectrum Stellar Spectrum Spectra of a nearby star and a distant galaxy Star is nearby, approximately at rest Galaxy is distant, traveling away from us at 12,000 km/s Galaxy Spectroscopy Penzias and Wilson, 1965. Inner Planets (Mercury, Venus, Earth, Mars) ~ 1 AU They are all rocky planets Asteroid Belt, ~ 3 AU Outer Planets (Jupiter, Saturn, Neptune, Uranus), ~ 5-40 AU They are all gaseous planets.. Pluto: odd ball planet, more like a comet Keiper Belt ~ 30 to 50 AU Oort Cloud ~ 50,000 AU Where comets come fro Download free Earth PPT Backgrounds. Free Earth PowerPoint template with nice Earth globe background and clock illustration. This is a great theme to make presentations on global topics. Total: 25 items

Earth science pptx - SlideShar

Earth is divided into 24 time zones. Because Earth rotates counterclockwise, east is later and west is earlier. When it is 4pm in Chicago it is 5pm in New York City. Earth's Revolution Earth revolves around the Sun in an elliptical orbit. The Sun is at one foci of the ellipse. The shape of a planet's elliptical orbit is its eccentricity Dubbed Kepler-186f, it's the the most Earth-like planet ever discovered and confirms that other habitable planets exist somewhere out there. Kepler 186f discovery. 2 of 2. In the race to find a. For instance, a planet that is 10% larger than the Earth would have more habitable land, while one that possesses 1.5 times the Earth's mass is likely to retain its interior heating longer through. The size of Earth is enormous from the perspective of a single individual. Standing at the edge of an ocean people on the planet, living about 40 per cent longer and each person consuming many times what the average of inhabitable land around the globe, it would equal 13 billion people(11). Since then many more estimate Earth Presentation templates. Use these PowerPoint templates and Google Slides themes aimed at raising awareness of environmental issues. They feature beautiful visuals and resources of planet Earth, which you can customize freely to make the presentation your own

Depends on what you mean by habitable. The usual astronomical definition is The right amount of sunlight such that there could be liquid waterand maybe Not too much gravity. By that definition - there are many exoplanets that fit the bill -.. Would you opt to live in an (inhabitable) exoplanet? A planet light-years away from earth, where no earthling will see you nor know about you, and you are the only inhabitant Earth is the only planet in the solar system that is known to have life on it. None of the other planets in the solar system have life on them. Earth's uniqueness (in this regard) is due to a. PowerPoint is the world's most popular presentation software which can let you create professional Earth Day powerpoint presentation easily and in no time. This helps you give your presentation on Earth Day in a conference, a school lecture, a business proposal, in a webinar and business and professional representations.. The uploader spent his/her valuable time to create this Earth Day. Uninhabitable Earth? In fact, it's really hard to fry the planet. A controversial article says we're heading for the worst-case warming scenarios. But while we can't rule out extreme warming.

Astronomers discover 24 planets more habitable than Eart

  1. Terrestrial Planets Mercury, Venus, Earth and Mars Close to Sun Small masses, radii Rocky, solid surfaces High densities Slow rotation Weak magnetic field No rings Few moons Jovian Planets Jupiter, Saturn, Uranus, and Neptune Far from Sun Large masses and radii Gaseous surface Low densities Fast rotation Strong magnetic field Many rings Many.
  2. That is, planets that might be even more conducive to creating life than our own world. The study makes the case that our own Earth-centric view of what planets can foster life has blinkered us to.
  3. Chapter 2 Planet Earth - Chapter 2 Planet Earth Vocabulary 1 Vocabulary 2 Rotation/ Revolution Water on Earth The Land 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 | PowerPoint PPT presentation | free to vie
  4. The outermost planet, TOI 700 d, is the only one of the known worlds in this system in the habitable[+] zone. It is about 1.2 times Earth's size, and is probably rocky

No planets besides Earth have air that we can breathe, so in that sense, no other planets are inhabitable. Of the eight planets, only Mars, Earth, Venus, and Mercury have a surface you could stand on. Only Mars and Earth have surface temperatures low enough that a habitat could be built there with current technology Fortunately for life on Earth, our planet is protected from the worst vagaries of the solar wind by its strong magnetic field. As the solar wind strikes Earth's magnetic field, it is deflected. We found that planets orbiting smaller mass stars tend to have longer habitable zone lifetimes. One of the planets that we applied our model to is Kepler 22b, which has a habitable lifetime of 4.

What makes a planet habitable? - NAS

  1. Compare the size of the earth with other planets As we have compared the Earth with Sun Now !! Start comparing the Sun with the Universe As we have compared the Earth - A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 4920da-ODU4
  2. An Oxygen Atmosphere for a Habitable Planet Earth's oxygen content is 45% and 85% by volume according to Ward & Brownlee. This compares with about 0.1% in the Sun, the so-called cosmic abundance. But having a lot of oxygen on a planet doesn't imply that there is an oxygen atmosphere. Oxygen tends to be bound in oxides so it would be quite.
  3. g from the sun
PPT - Properties of the Planets in our Solar System (131

Why is the Earth habitable? AMN

A planet like Mars, with half the diameter of Earth, is born with only about 10-15% the amount of internal heat as our world, and will therefore see a greater percentage of it radiate away much. Download Planet Earth PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. Free + Easy to edit + Professional + Lots backgrounds The ultimate goal of NASA's exoplanet program is to find unmistakable signs of current life on a planet beyond Earth. How soon that can happen depends on two unknowns: the prevalence of life in the galaxy and how lucky we get as we take those first, tentative, exploratory steps. MIT astronomer Sara Seager, is a McArthur Genius Fellow and leader. Just a cosmic hop, skip and jump away, an Earth-size planet orbits the closest star to our sun, Proxima Centauri. Ever since the discovery of the exoplanet—known as Proxima Centauri b—in 2016.

Study calculates how lucky we are to have a habitable plane

An artist's depiction of two planets colliding. Researchers believe that 4.4 billion years ago, the Earth was involved in a similar collision that seeded the chemical conditions necessary for life. Facts about the Earth. 1) Earth is the third planet from the sun in our solar system. Its name comes from the the old English and Germanic words meaning 'the ground'. 2) Our amazing planet has been around for quite some time. By researching our planet's rocks, scientists have calculated the Earth to be around 4.5 billion years old Smile: you might be some alien's favourite character on the reality TV show called Earth. A new scientific report suggests that there are 29 planets in our cosmic neighbourhood where alien life. It takes Mars 668.98 Earth days to travel around the Sun. Comparison to Earth: Of all the planets in the solar system, Mars is the most Earth-like in terms of its water patterns The planet OGLE-2005-BLG-390, nicknamed Hoth, is a cold super-Earth that might be a failed Jupiter. Unable to grow large enough, it had to settle for a mass five times that of Earth and a surface locked in the deepest of deep freezes, with a surface temperature estimated at minus 364 degrees Fahrenheit (minus 220 Celsius)

Humans Have 30 Years To Stave Off Climate Catastrophe

The Uninhabitable Earth: Life After Warming. It is worse, much worse, than you think. If your anxiety about global warming is dominated by fears of sea-level rise, you are barely scratching the surface of what terrors are possible. In California, wildfires now rage year-round, destroying thousands of homes The hunt for planets like our own has come up with a striking discovery: There's a planet about the same size as Earth in the nearby Alpha Centauri system, and it's the closest planet found outside our solar system. Close, of course, is a relative term

24 Planets Even Better for Life Than Earth - YouTub

1. July 4 th, 2021 - Planet Earth Independence Day. The five-year plan starts here. We no longer accept the yoke of oppression forced on us by the rich, the powerful, and greedy. There is a glass ceiling to our growth and its 4 feet high. We are star lights, we are golden - but we are plastered in the mire An artist's rendition of Kepler-69c, a super-Earth-size planet in the habitable zone of a star like our sun, located about 2,700 light-years from Earth in the constellation Cygnus Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels. The global average surface temperature rose 0.6 to 0.9 degrees Celsius (1.1 to 1.6° F) between 1906 and 2005, and the rate of temperature increase has nearly. How habitable is the Earth? (Pay attention at the back: this is a trick question.) We H. Sapiens Sapiens appear to be an infestation on this planet. After the slow-burning evolution of hominins in Africa, our ancestral populations erupted out into Eurasia in a geological eye-blink, spread into the Americas by way of the Bering land bridge (sea levels being somewhat lower during the ice ages.

Existence of Life PPT - KR Circumstellar Habitable Zone

The innermost world, TOI 700 b, is roughly Earth-sized and completes one orbit every 10 Earth days. The center planet, TOI 700 c, is 2.6 times bigger than our planet, meaning it's likely a gassy. The fact that we've got eight confirmed less-than-two-Earth-radius planets in the habitable zone around their star is just the beginning. Image credit: Jack J. Lissauer, Rebekah I. Dawson. The discovery of any planet is pretty exciting, but almost everyone wants to know if there are smaller Earth-like planets with iron cores, says Dr. Brendan Dyck, assistant professor of geology. Morning Star solutions for ICSE Class 9 Total Geography chapter 1 (Earth as a Planet) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any

Are There Planets More Habitable Than Earth? - YouTub

(a) Earth is called a Watery Planet. (b) Earth has the most ideal temperature conditions. (c) Earth and its Moon are called a double planet. Answer: (a) Because the Earth is the only planet which has water and 70% if its surface is covered by water [Gallery: The Strangest Alien Planets] The newfound planet in the habitable zone is called Kepler-22b. It is located about 600 light-years away, orbiting a sun-like star. Kepler-22b's radius is 2.4 times that of Earth, and the two planets have roughly similar temperatures Gliese 667 Cc, discovered in 2011 but announced in 2012, is a super-Earth orbiting in the circumstellar habitable zone of Gliese 667 C. It is one of the most Earth-like planet known. Gliese 163 c, discovered in September 2012 in orbit around the red dwarf Gliese 163 is located 49 light years from Earth