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 planets

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updated Tue. April 24, 2018

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"Super-Earth" planets are giant-size versions of Earth, and some research has suggested that they're more likely to be habitable than Earth-size worlds. But a new study reveals how difficult it would be for any aliens on these exoplanets to explore space. To launch the equivalent of an Apollo moon ...
Known as the Transiting Exoplanet Survey Satellite, or TESS for short, the futuristic spacecraft will venture out into the cosmos to discover potentially life-harboring planets. TESS lifted off from Cape Canaveral Air Force Station, and separated from it rocket ride after a 49 minute launch. TESS is taking ...

Uranus is one of the solar system's most mysterious planets. Scientists had long believed that the "ice giant" world has clouds of hydrogen sulfide, a compound that smells bad to people, but they couldn't be certain. New telescope observations confirm the planet is clouded by the chemical. The ... astronomers
The hunt for planets beyond our Solar System has led to the discovery of thousands of candidates in the past few decades. Most of these have been gas giants that range in size from being Super-Jupiters to Neptune-sized planets. However, several have also been determined to be "Earth-like" in ...
NASA has put a new set of eyes in space to search for other worlds. The Transiting Exoplanet Surveying Satellite, or TESS, had countless earthly eyes full of excitement following its launch, including Rutgers physics professor Saurabh Jha. “It's a great leap forward in our ability to understand planets outside ...

It is this debris that eventually coalesced into our current lineup of planets. The Almahata Sitta meteorite is the first evidence of this early stage. “What we're claiming here is that we have in our hands a remnant of this first generation of planets that are missing today because they were destroyed or ...
With all that extra room, hopefully, EDEN ISS will clarify how to expand space farming beyond orbits, onto other planets, says Anna-Lisa Paul, who is also a space biologist at the University of Florida. Learning how to set up and operate a greenhouse in Antarctica, the researchers say, should be good ...
MIDDLETOWN — A. Meredith Hughes, assistant professor of astronomy at Wesleyan University, has received a Cottrell Scholar Award from Research Corporation for Science Advancement. The money will allow her to develop an alternative method for assessing the presence of extra-solar planets by ...
Look up at the night sky. If you did that in the early 1980s, you might have speculated. You might have guessed. But you wouldn't have been certain if planets existed beyond our solar system. At the time, NASA's Kepler mission was just an idea from scientist Bill Borucki. But after the mission launched in ...
But an international team led by UC Santa Barbara physicist Benjamin Mazin has developed a new instrument to detect planets around the nearest stars. It is the world's largest and most advanced superconducting camera. The team's work appears in the journal Publications of the Astronomical Society of ...
When astronomers looking for new exoplanets planets gaze up at the tranquil night sky and wish upon a star, they're really just wishing those stars would get the hell out of the way. That's because, when it comes to looking for planets, light can be the enemy. Starlight tends to totally wash out the planets, ...
When it comes to searching for life, we've usually assumed that all parts of our galaxy are equally likely contenders. Maybe not, according to Cardiff University astronomers Jane Greaves and Phil Cigan, who presented some new findings at the European Week of Astronomy and Space Science (EWASS) in ...
The dusty disks around these stars harbor planetismals, which are essentially baby planets, the ESO reports. The stars, located between 230 to 550 light-years away, create some seriously distinct shapes. Some are oddly reminiscent of that old Windows Media Player visualization called “Dance of the ...
Specifically, the disks are seen around nearby young stars and contain gas, dust, and planetesimals which combine to form developing planets. Researchers have observed a remarkable variety of these disks, differing in size, shape and structure, according to a statement from ESO. [The Strangest Alien ...
Next week, NASA is launching its new exoplanet hunter: a satellite that will stare out at the cosmos searching for never-before-seen worlds. Dubbed TESS, the spacecraft is tasked with looking for planets circling around stars outside of our Solar System to help scientists figure out what these planets are ...
Kepler's thousands of discoveries revolutionized our understanding of planets and planetary systems. Now, however, the spacecraft is nearly out of its hydrazine fuel and will end its fantastic life sometime in the next few months. Luckily for planet hunters, NASA's upcoming TESS mission is waiting in the ...

LIVERPOOL, U.K.—Alpha Centauri, a three-star system just 4 light-years away that is the sun's nearest neighbor, ought to be a great place to look for Earth-like planets. But last week, at a meeting of the European Astronomical Society (EAS) here, astronomers lamented the way the system has thwarted ...
For centuries, human beings have wondered about the possibility of other Earths orbiting distant stars. Perhaps some of these alien worlds would harbor strange forms of life or have unique and telling histories or futures. But it was only in 1995 that astronomers spotted the first planets orbiting sunlike stars outside of our ...
Researchers have developed a new technique that uses artificial intelligence to classify planets and, in turn, determine whether life may exist on other worlds. The new technique uses so-called artificial neural networks, known as ANNs, to classify planets, based on whether they resemble present-day Earth ...
The European Extremely Large Telescope, which should be online in the mid-2020s, may also be able to directly image a handful of exoplanets.” The paper Spectra of Earth-like planets through geological evolution around FGKM stars by Dr Sarah Rugheimer and Professor Lisa Kaltenegger is published in ...
In antiquity people believed the Earth was the center of the solar system and the universe, whereas now we know we are on just one of many planets orbiting the sun. But this shift in view didn't happen overnight. Rather, it took almost a century of new theory and careful observations, often using simple ...
Ninety-five new exoplanets—planets that orbit around stars other than our sun—can now be added to the long list of planets that have been discovered since the 1990s. Ph.D. student Andrew Mayo from the Technical University of Denmark (DTU Space) is behind the discovery, which is described in a new ...
... experts reveal. HUMANITY “will take it well” when aliens are found according to an expert, which comes after 100 planets orbiting stars outside of our solar system were discovered and could be home to extraterrestrial life. By Thomas Mackie. PUBLISHED: 06:56, Sun, Feb 18, 2018 | UPDATED: 07:13, Sun, Feb 18, 2018 ...
The seven Earth-size planets around the distant star TRAPPIST-1 are "tugging" on each other as they travel around their parent star.By carefully observing those tugs, scientists were able to gather information about the planets' composition, and found that some of the TRAPPIST-1 worlds could have as ...
For planets in the habitable zone, a hydrogen-rich atmosphere would render the surface extremely hot and unfriendly for life. Hydrogen is more abundant in gas-giant planets in Earth's solar system, compared to rocky planets. Neptune, for example, has a very "puffy," hydrogen-rich atmosphere, according to ...
"We can estimate that the number of planets in this [faraway] galaxy is more than a trillion," says Xinyu Dai, the astronomy and astrophysics professor who ... publication of their study, other scientists will pick up the data and develop another technique to verify whether or not these extragalactic planets exist.
There's no proper definition of an exoplanet - only a working definition laid out by the IAU Working Group on Extrasolar Planets in 2003. ... looking at the object's immediate surroundings, because that can tell us how it formed - and formation could be the key we use to distinguish brown dwarfs from planets.
Of course, that's pretty massive. Jupiter carries almost 318 times the mass of Earth, making the most massive planets possible the equivalent of nearly 3,200 Earths. Most of the public controversy about the definition of a planet has focused on Pluto (which weighs in at only about 0.2 percent of Earth's mass).
A planet can be no bigger than about 10 times the mass of Jupiter, an astrophysicist has concluded. Of course, that's pretty darned massive. Jupiter carries almost 318 times the mass of Earth, making the most massive planets possible the equivalent of nearly 3,200 Earths. Most of the public controversy ...
Since their discovery last year, the seven planets and their star, called Trappist-1, have thrilled astronomers hunting for a world resembling Earth. Never before had scientists found so many Earth-sized planets around a single star, or in a zone where the extreme temperatures of space would not obliterate ...
The French-led ExTrA (Exoplanets in Transits and their Atmospheres) project will help scientists look for moments when the light coming off small "red dwarf" stars is subtly dimmed due to planets passing in front of them (as seen from Earth), according to a statement from the European Southern Observatory ...
Two planets in a solar system that looks like ours could be habitable, according to new research. The Trappist-1 system brought worldwide excitement when it was found last year. In many ways, it resembles our own neighbourhood – filled with worlds that scientists said at the time could potentially be ...
VISALIA – The opera “The Planets” may have launched composer Gustav Holst's career into orbit but its popularity seemed to pull his spirits down. According to Holst biographers, the piece was a triumph of his time, in tune with his contemporaries and grounded in lifelong themes of mankind's duality of war ...
When scientists searching for exoplanets — worlds located beyond our solar system — first spotted patterns in disks of dust and gas around young stars, they thought newly formed planets might be the cause. But a recent NASA study cautions that there may be another explanation — one that doesn't ...
"The similar sizes and orbital spacing of planets have implications for how most planetary systems form," researchers said in the statement. "In classic planet-formation theory, planets form in the protoplanetary disk that surrounds a newly formed star. The planets might form in compact configurations with ...
As Calla Cofield at Space.com reports, while software is able to identify stars that host planets, it still takes a human to confirm the data. So scientists turned to citizen scientists for help, developing Exoplanet Explorers, hosted on the Zooniverse platform—a system that connects citizen scientists to projects.
A family of four planets orbiting a distant star was discovered last April, with the help of citizen scientists around the world. In a new paper, researchers reveal some fascinating features of this alien solar system, including the presence of a fifth planet. The planetary system K2-138 is home to at least five ...
Planets form out of the same natal gas as their parent star. So a star's high metallicity is a sign that its planets came together within metal-enriched gas. Previous studies have found that metallicity plays a role in planet formation — but astronomers don't yet understand how the connection works.
Generally, the disk of planet-forming material surrounding a sun-like star condenses to form planets and moons within a few million years of the star's birth. However, a large amount of gas and dust still circles RZ Piscium, which suggests the star is destroying planets in its vicinity, rather than building them.
View larger. | Dennis Chabot of POSNE NightSky Astrophotography caught Jupiter and Mars on January 7, 2018, the day of their spectacular conjunction. On that morning, these 2 planets were about half a moon-diameter apart. In all the photos on this page, Jupiter is the brightest “star” visible. It's also now ...
SpaceX CEO Elon Musk was interested in getting a newly elected President Donald Trump on board with his company's mission to explore other planets, according to an excerpt from a new book on the Trump administration that has dominated headlines this week. Among the many claims made in Michael ...
Because multiple systems are common, they may be rich targets in the hunt for alien planets, according to Ruslan Belikov, an astrophysicist at NASA's Ames Research Center in Moffett Field, California, and his colleagues. For example, the sun's closest neighbor, the Alpha Centauri system, possesses three ...
SpaceX CEO Elon Musk was interested in getting a newly elected President Donald Trump on board with his company's mission to explore other planets, according to an excerpt from a new book on the Trump administration that has dominated headlines this week. Among the many claims made in Michael Wolff's "Fire and ...
The planets will then make their way over the sky at an altitude of 22 degrees above the southern horizon before the break of dawn at 7.37am washes them away. Royal Observatory Greenwich said: “A little before dawn Jupiter and Mars will be very close in the night sky, about one fifth of the width of your ...
As a result, early discoveries—such as the first exoplanet to be found, in 1995—were usually "hot Jupiters," giant planets in tight orbits. Then came the High Accuracy Radial velocity Planet Searcher (HARPS) at ESO's La Silla Observatory in Chile in 2003, a second-generation spectrograph that enabled ...
“We used machine learning to help identify planets that were missed by previous searches of the Kepler data,” Christopher Shallue, a senior software engineer with Google's research team Google AI, said during a Dec. 14 conference call. “Machine learning really shines in situations where there is too ...
It currently pays to be an early riser if you wish to view the planets, for it's all happening at dawn in the skies of Western Europe. Observers in the UK wishing to get the best views should find a location that offers an unobstructed southeasterly aspect where, if you are blessed with clear skies between 7am ...
"Until 2013, rings were only known around giant planets," the authors wrote in the paper. "This discovery was thus surprising, and is key to better understanding the planetary rings, since [small-object ring systems] now appear to be more common than previously thought." [Asteroid Chariklo Has Rings: ...
The American space agency NASA and the technology company Google have identified an eighth planet in a faraway solar system. That solar system now has exactly the same number of planets as our own. Machines made the surprising discovery, not human researchers. NASA and Google ...


 

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