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Hot super-Earths stripped by host stars: 'Cooked' planets shrink due to radiation
Astrophysicists at the University of Birmingham have used data from the NASA Kepler space telescope to discover a class of extrasolar planets whose atmospheres have been stripped away by their host stars, according to research published in the journal Nature Communications today (April 11, 2016). (2016-04-11)

Looking for Earths by looking for Jupiters
In the search for Earth-like planets, it is helpful to look for clues and patterns that can help scientist narrow down the types of systems where potentially habitable planets are likely to be discovered. New research narrows down the search for Earth-like planets near Jupiter-like planets. Their work indicates that the early post-formation movements of hot-Jupiter planets probably disrupt the formation of Earth-like planets. (2012-05-07)

As many as six billion Earth-like planets in our galaxy, according to new estimates
There may be as many as one Earth-like planet for every five Sun-like stars in the Milky way Galaxy, according to new estimates by University of British Columbia astronomers using data from NASA's Kepler mission. (2020-06-16)

Prediction: More gas-giants will be found orbiting Sun-like stars
New planetary formation models from Carnegie's Alan Boss indicate that there may be an undiscovered population of gas giant planets orbiting around Sun-like stars at distances similar to those of Jupiter and Saturn. (2017-02-21)

UF astronomers, NASA team find 6 closely packed planets orbiting same star
A NASA team including three University of Florida astronomers has found six new planets in a distant solar system that in some ways resembles our own. (2011-02-02)

Planets with double suns are common
Astronomers using NASA's Kepler mission have discovered two new circumbinary planet systems -- planets that orbit two stars, like Tatooine in the movie Star Wars. Their find, which brings the number of known circumbinary planets to three, shows that planets with two suns must be common, with many millions existing in our galaxy. (2012-01-11)

One planet, 2 stars: New research shows how circumbinary planets form
Luke Skywalker's home planet Tatooine would have formed far from its current location in the Star Wars universe, a new University of Bristol study into its real world counterparts, observed by the Kepler space telescope, suggests. (2014-01-31)

Early planet formation triggers planet offspring
Interaction between massive planets and the disks of gas and dust from which they formed are vital in determining the shape of planetary systems, suggest two former University of Toronto researchers. The work suggests conditions suitable for forming habitable planets - at least ones like the Earth - could still be rare. (1999-12-07)

Scientists predict earth-like planets around most stars
Planetary scientists have calculated that there are hundreds of billions of Earth-like planets in our galaxy which might support life, by applying a 200 year old idea to the thousands of exo-planets discovered by the Kepler space telescope. (2015-02-04)

A trio of super-Earths
European astronomers made a breakthrough in the field of extra-solar planets. They have found a system of three super-Earths around the star HD 40307. The astronomers also found that one solar-like star out of three harbors short orbit, low-mass planets. (2008-06-16)

Number of habitable planets could be limited by stifling atmospheres
New research has revealed that fewer than predicted planets may be capable of harbouring life because their atmospheres keep them too hot. (2016-05-25)

Researchers search for Venus-like planets
Identification of planets orbiting distant stars is spurring the search for an Earth-like planet. Now a team of researchers has developed a way to distinguish a distant Venus-like planet from an Earth-like one. (2014-09-10)

Big star ate my planet
Astronomers from Baltimore, Maryland, have found telltale signs that giant stars are gobbling up planets--giving clues as to how many planets are out there. They say that planet eaters have a strange glow, spin more rapidly and show traces of lithium. (1999-06-02)

First transiting planets in a star cluster discovered
All stars begin their lives in groups. Most stars are born in small groups that quickly fall apart. Others form in huge, dense swarms, where stars jostle with thousands of neighbors while strong radiation and harsh stellar winds scour interstellar space, stripping planet-forming materials from nearby stars. It would thus seem an unlikely place to find alien worlds. Yet 3,000 light-years from Earth, in the star cluster NGC 6811, astronomers have found two planets smaller than Neptune orbiting sun-like stars. (2013-06-26)

Star tours
Astronomers have a new tool in their search for extraterrestrial life -- a sophisticated bot that helps identify stars hosting planets similar to Jupiter and Saturn. (2019-06-25)

Free-floating planets in the Milky Way outnumber stars by factors of thousands
A few hundred thousand billion free-floating life-bearing Earth-sized planets may exist in the space between stars in the Milky Way. So argues an international team of scientists led by Professor Chandra Wickramasinghe, Director of the Buckingham Centre for Astrobiology at the University of Buckingham, UK. Their findings are published online in the Springer journal Astrophysics and Space Science. (2012-05-10)

OU astrophysicists discover planets in extragalactic galaxies using microlensing
A University of Oklahoma astrophysics team has discovered for the first time a population of planets beyond the Milky Way galaxy. Using microlensing--an astronomical phenomenon and the only known method capable of discovering planets at truly great distances from the Earth among other detection techniques--OU researchers were able to detect objects in extragalactic galaxies that range from the mass of the Moon to the mass of Jupiter. (2018-02-02)

Many small exoplanets found to be covered in gas
NASA's Kepler space telescope discovered thousands of (2014-01-08)

Interiors of extrasolar planets: A first step
A team of European astronomers, led by T. Guillot (CNRS, Observatoire de la Côte d'Azur, France), will publish a new study of the physics of Pegasids (also known as hot Jupiters) in Astronomy & Astrophysics. They found that the amount of heavy elements in Pegasids is correlated to the metallicity of their parent stars. This is a first step in understanding the physical nature of the extrasolar planets. (2006-05-30)

More planets emerge with solar system-like orbits
An international team of astronomers has discovered eight new extrasolar planets, bringing to nearly 80 the number of planets found orbiting nearby stars. The latest discoveries, supported by the National Science Foundation (NSF) and NASA, uncovered more evidence of what the astronomers are calling a new class of planets. (2001-10-15)

New planets around sun-like stars
An international team of planet hunters has found four new planets orbiting two nearby stars that are very similar to the sun. These discoveries point the way to the detection of potentially habitable worlds within a few years. (2009-12-14)

Planets around a black hole?
Theoreticians in two different fields defied the common knowledge that planets orbit stars like the Sun. They proposed the possibility of thousands of planets around a supermassive black hole. (2019-11-25)

'Astro-archaeological' discovery from the dawn of time
Scientists led by University of Birmingham asteroseismologists have discovered a solar system with five Earth-sized planets dating back to the dawn of the galaxy. (2015-01-27)

A better way to learn if alien planets have the right stuff
A new method for analyzing the chemical composition of stars may help scientists winnow the search for Earth 2.0. Yale University researchers Debra Fischer and John Michael Brewer, in a new study that will appear in the Astrophysical Journal, describe a computational modeling technique that gives a clearer sense of the chemistry of stars, revealing the conditions present when their planets formed. (2016-08-24)

Because you can't eat just one: Star will swallow two planets
Two worlds orbiting a distant star are about to become a snack of cosmic proportions. Astronomers announced today that the planets Kepler-56b and Kepler-56c will be swallowed by their star in a short time by astronomical standards. Their ends will come in 130 million and 155 million years, respectively. (2014-06-02)

Astronomers discover two new planets, both among the hottest ever
Astronomers have discovered two new planets outside our solar system, both extremely close to their stars and thus among the hottest ever found. (2006-09-26)

A new approach for detecting planets in the Alpha Centauri system
Yale astronomers have taken a fresh look at the nearby Alpha Centauri star system and found new ways to narrow the search for habitable planets there. According to a study led by Professor Debra Fischer and graduate student Lily Zhao, there may be small, Earth-like planets in Alpha Centauri that have been overlooked. Meanwhile, the study ruled out the existence of a number of larger planets in the system. (2017-12-18)

Exploring planets in distant space and deep interiors
In recent years researchers have found hundreds of new planets beyond our solar system, raising questions about the origins and properties of these exotic worlds -- not to mention the possible presence of life. Speaking at a symposium titled (2009-02-14)

Some stars capture rogue planets
New research suggests that billions of stars in our galaxy have captured rogue planets that once roamed interstellar space. The nomad worlds, which were kicked out of the star systems in which they formed, occasionally find a new home with a different sun. This finding could explain the existence of some planets that orbit surprisingly far from their stars, and even the existence of a double-planet system. (2012-04-17)

Earth-sized planets in habitable zones are more common than previously thought
The number of potentially habitable planets is greater than previously thought, according to a new analysis by a Penn State researcher, and some of those planets are likely lurking around nearby stars. (2013-03-12)

Ancient star system reveals Earth-sized planets forming near start of universe
An international collaboration of scientists, led by the University of Birmingham and contributed by the University of Sydney, has discovered the oldest star hosting Earth-sized planets. (2015-01-27)

Surprising number of exoplanets could host life
A new study shows other stars could have as many as seven Earth-like planets in the absence of a gas giant like Jupiter. (2020-07-31)

Five planets revealed after 20 years of observation
To confirm the presence of a planet, it is necessary to wait until it has made one or more revolutions around its star. This can take from a few days for the closest to the star to decades for the furthest away. Only a telescope dedicated to the search for exoplanets can carry out such measurements over such long periods of time, which is the case of the EULER telescope of UNIGE. (2019-04-17)

TRAPPIST-1: Findings show exoplanets made of rock and water
In 2016, a team of researchers led by EU-funded astronomer Michael Gillon at the University of Liege, Belgium, discovered three temperate Earth-sized planets orbiting TRAPPIST-1, an ultra-cool dwarf star just 40 light years from Earth. A few months later, Gillon surprised the world with the discovery of a whole planetary system made of a total of seven planets around this star. A set of new studies reveals today the nature and composition of the planets, shedding light on their potential habitability. (2018-02-05)

OU astrophysicist identifies composition of Earth-size planets in TRAPPIST-1 system
A University of Oklahoma post-doctoral astrophysics researcher, Billy Quarles, has identified the possible compositions of the seven planets in the TRAPPIST-1 system. Using thousands of numerical simulations to identify the planets stable for millions of years, Quarles concluded that six of the seven planets are consistent with an Earth-like composition. The exception is TRAPPIST-1f, which has a mass of 25 percent water, suggesting that TRAPPIST-1e may be the best candidate for future habitability studies. (2017-06-08)

A planet that should not exist
Astronomers detected a giant planet orbiting a small star. The planet has much more mass than theoretical models predict. While this surprising discovery was made by a Spanish-German team at an observatory in southern Spain, researchers at the University of Bern studied how the mysterious exoplanet might have formed. (2019-09-26)

Some planetary systems just aren't into heavy metal
Small planetary systems with multiple planets are not fans of heavy metal -- think iron, not Iron Maiden -- according to a new Yale University study. (2018-10-24)

Space dust may transport life between worlds, research suggests
Life on Earth might have originated from tiny organisms brought to our planet in streams of fast-moving space dust, according to a new study. (2017-11-20)

Surface composition determines temperature and therefore habitability of a planet
Astronomers from KU Leuven, Belgium, have shown that the interaction between the surface and the atmosphere of an exoplanet has major consequences for the temperature on the planet. This temperature, in turn, is a crucial element in the quest for habitable planets outside our Solar System. (2016-07-14)

Are we being watched? Tens of other worlds could spot the Earth
A group of scientists from Queen's University Belfast and the Max Planck Institute for Solar System Research in Germany have turned exoplanet-hunting on its head, in a study that instead looks at how an alien observer might be able to detect Earth using our own methods. They find that at least nine exoplanets are ideally placed to observe transits of Earth, in a new work published in the journal Monthly Notices of the Royal Astronomical Society. (2017-09-08)

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