Tag Archives: alien planet

Newly Discovered Alien Planet, Hotter Then Most Stars

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 KELT-9b Ultrahot Planet

      Astronomers have found the hottest known exoplanet, a world where temperatures exceed those on the surface of most stars.

The Jupiter-like planet, known as KELT-9b, zips around its hot host

By Mike Wall
Space.com
6-5-17

star once every 1.5 Earth days. Its orbit is so tight that the gas giant is tidally locked, always showing the same face to the star, just as the moon shows only one face to Earth.

Temperatures on KELT-9b’s “day side” reach a blazing 7,800 degrees Fahrenheit (4,300 Celsius), the planet’s discoverers said. That’s hotter than the surface of the dwarf stars that dominate the Milky Way galaxy, and just 2,200 degrees F (1,200 degrees C) cooler than the surface of the sun. (However, temperatures in the sun’s outer atmosphere, or corona, can reach about 3 million degrees F, or 1.67 million degrees C.)

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Eight potentially habitable alien worlds discovered

NASA’s Kepler space telescope hit a major milestone on Tuesday, January 6. It was announced at the annual winter meeting of the American Astronomical Society in Seattle that Kepler has now identified more than 1,000 exoplanets and more than 4,000 planet candidates.

Kepler began its planet-hunting mission in 2009. And, although that initial mission ended in mid-2013 after two of spacecraft’s four reaction wheels failed, eliminating the ability of the telescope to maintain positioning, scientists are still combing through the significant pile of data collected by Kepler.

(Credit: NASA)

(Credit: NASA)

Scientists from the Harvard-Smithsonian Center for Astrophysics analyzing Kepler’s data recently discovered eight potentially habitable alien planets. The Telegraph explains that “The new worlds double the number of small exo-planets believed to be circling their stars in the ‘Goldilocks zone’ – neither too hot, nor too cold, where water would not evaporate or freeze.” Dr. Guillermo Torresthe, the study’s lead scientist, explains, “Most of these planets have a good chance of being rocky, like Earth.”

The Telegraph points out that, of these eight planets that could potentially sustain life as we know it, the two most like Earth, Kepler-438b and Kepler-442b, “orbit red dwarf stars that are smaller and cooler than the Sun.”

Study co-author, Dr. David Kipping, cautiously explains, “We don’t know for sure whether any of the planets in our sample are truly habitable. All we can say is that they’re promising candidates.”

The team’s research about these planets will be published in the Astrophysical Journal.

Artist's illustration of Kepler. (Credit: NASA Ames/ W Stenzel)

Artist’s illustration of Kepler. (Credit: NASA Ames/ W Stenzel)

The premature end of Kepler’s primary mission was an unfortunate blow to the hunt for alien worlds. But, fortunately, the spacecraft has successfully been repurposed. As Space.com explains, “In May 2014, NASA approved a new two-year mission extension called K2 for the space observatory, during which a compromised Kepler continues to hunt for exoplanets but also observes other cosmic objects and phenomena, including supernova explosions and star clusters.”

The post Eight potentially habitable alien worlds discovered appeared first on Openminds.tv.

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1st Alien Planet of New Mission, Found By NASA’s Kepler Spacecraft

1st Alien Planet Found By NASA's Kepler Spacecraft on New Mission

By Mike Wall
Space.com
12-18-14

      NASA’s Kepler space telescope is discovering alien planets again.

The prolific spacecraft has spotted its first new alien planet since being hobbled by a malfunction in May 2013, researchers announced today (Dec. 18). The newly discovered world, called HIP 116454b, is a “super Earth” about 2.5 times larger than our home planet. It lies 180 light-years from Earth, in the constellation Pisces — close enough to be studied by other instruments, scientists said.

“Like a phoenix rising from the ashes, Kepler has been reborn and is continuing to make discoveries,” study lead author Andrew Vanderburg, of the Harvard-Smithsonian Center for Astrophysics (CfA), said in a statement. “Even better, the planet it found is ripe for follow-up studies.”

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Want to Colonize an Alien Planet? Send 40,000 People

Future Starship Under Construction

By Mike Wall
space.com
7-28-14

     If humanity ever wants to colonize a planet beyond the solar system, it’s going to need a really big spaceship.

The founding population of an interstellar colony should consist of 20,000 to 40,000 people, said Cameron Smith, an anthropologist at Portland State University in Oregon. Such a large group would possess a great deal of genetic and demographic diversity, giving the settlement the best chance of survival during the long space voyage and beyond, he explained. . . .

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