Never stop learning with Curiosity Learning Paths!

  • Get inspired with the web’s best bite-sized learning content, curated for learners like you.
  • Learn more—quickly and easily—by exploring our dynamic Learning Paths.
  • Spread quick knowledge to friends with our original Smart Memes!

ScienceCasts: Getting to Know the Goldilocks Planet

This learning path has been created for you.
04:00
Add to Playlist
Watch Later Added
  • Actions
  • About This Video

Paths are the best way to keep exploring content you're interested in. We'll create a stream of content for you filled with the best videos related to “ScienceCasts: Getting to Know the Goldilocks Planet”.

Visit http://science.nasa.gov/science-news/science-at-nasa/2012/29mar_goldilocks/ for more. NASA's Kepler spacecraft is discovering a veritable avalanche of alien worlds. As the numbers mount, it seems to be just a matter of time before Kepler finds what astronomers are really looking for: an Earth-like planet orbiting its star in the "Goldilocks zone".
02:56
Add to Playlist
Watch Later Added
  • Actions
  • About This Video
Visit http://science.nasa.gov/ for more! Stars are bright, but their planets are not, which makes planet hunting difficult. However, NASA's ultraviolet telescope GALEX may be providing a solution.
04:04
Add to Playlist
Watch Later Added
  • Actions
  • About This Video
Visit http://science.nasa.gov/ for more. Once, astronomers thought planets couldn't form around binary stars. Now Kepler has found a whole system of planets orbiting a double star. This finding shows that planetary systems are weirder and more abundant than previously thought.
03:46
Add to Playlist
Watch Later Added
  • Actions
  • About This Video
SciShow Space starts the year off with a bang, and the discovery of 8 Earth-like planets, two of which may be the most promising candidates yet for harboring life. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources:
04:25
Add to Playlist
Watch Later Added
  • Actions
  • About This Video
Visit http://science.nasa.gov/ for breaking science news. An exotic class of exoplanets called "hot Jupiters" are even weirder than astronomers imagined. While these worlds may have Earth-like blue skies, new data show that they are anything but Earth-like.
03:38
Add to Playlist
Watch Later Added
  • Actions
  • About This Video
For years, we've believed that around 2 billion planets in the galaxy are able to support alien life. But what if we were wrong? Anthony discusses how new knowledge of the Goldilocks Zone could mean the possibility of life on up to 60 billion planets! Read More: Further Away Planets 'Can Support Life" Say Researchers http://www.bbc.co.uk/news/uk-scotland-north-east-orkney-shetland-25639306 "The University of Aberdeen team, which included academics from the University of St. Andrews, said cold rocky planets thought uninhabitable might be able to support life beneath the surface." Life on Other Planets Could Be Far More Widespread, Study Finds http://phys.org/news/2014-01-life-planets-widespread.html "Earth-sized planets can support life at least ten times further away from stars than previously thought, according to academics at the University of Aberdeen." Increased insolation threshold for runaway greenhouse processes on Earth-like planets http://www.nature.com/nature/journal/v504/n7479/full/nature12827.html "The increase in solar luminosity over geological timescales should warm the Earth's climate, increasing water evaporation, which will in turn enhance the atmospheric greenhouse effect." Cloud modeling expands estimate of life-supporting planets http://news.uchicago.edu/article/2013/07/01/cloud-modeling-expands-estimate-life-supporting-planets "A new study that calculates the influence of cloud behavior on climate doubles the number of potentially habitable planets orbiting red dwarfs, the most common type of star in the universe." STABILIZING CLOUD FEEDBACK DRAMATICALLY EXPANDS THE HABITABLE ZONE OF TIDALLY LOCKED PLANETS http://iopscience.iop.org/2041-8205/771/2/L45/ "The habitable zone (HZ) is the circumstellar region where a planet can sustain surface liquid water." Habitable Zone For Planets Shown To Be Bigger Than Once Thought http://www.huffingtonpost.com/2013/12/12/habitable-zone-planets-sun-earth_n_4432033.html "Earth's place in the solar system is just right. It's not too hot, like Venus, and it's not too cold, like Mars, and this "Goldilocks zone" of habitability around other stars like the sun just might be bigger than thought, scientists say." STABILIZING CLOUD FEEDBACK DRAMATICALLY EXPANDS THE HABITABLE ZONE OF TIDALLY LOCKED PLANETS http://home.uchicago.edu/~/junyang28/Papers/Yang_Cowan_Abbot_Clouds_HZ_ApJL_2013.pdf "The Habitable Zone (HZ) is the circumstellar region where a planet can sustain surface liquid water." CIRCUMSTELLAR HABITABLE ZONES FOR DEEP BIOSPHERES http://www.lpi.usra.edu/meetings/lpsc2013/pdf/2931.pdf "The circumstellar habitable zone (HZ) is traditionally a thin heliocentric shell within which liquid water is thermally stable on the surface of an Earth-like planet." Extending the Habitable Zone for Red Dwarf Stars http://www.astrobio.net/exclusive/4585/extending-the-habitable-zone-for-red-dwarf-stars- "Stars known as red dwarfs might have larger habitable zones friendly to 'life as we know it' than once thought, researchers say." A dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zone http://www.eso.org/public/archives/releases/sciencepapers/eso1328/eso1328a.pdf "Since the discovery of the ?rst planets around other stars, Doppler precision has been steadily increasing to the point where objects as small as a few Earth masses can currently be detected around nearby stars." The Goldilocks Zone - NASA Science http://science1.nasa.gov/science-news/science-at-nasa/2003/02oct_goldilocks/ "Researchers are finding that life can thrive in some unexpected places." 60 Billion Alien Planets Could Support Life, Study Suggests http://www.space.com/21800-alien-planets-60-billion-habitable-exoplanets.html "Though only about dozen potentially habitable exoplanets have been detected so far, scientists say the universe should be teeming with alien worlds that could support life." 22% of Sun-like Stars have Earth-sized Planets in the Habitable Zone http://www.universetoday.com/106121/22-of-sun-like-stars-have-earth-sized-planets-in-the-habitable-zone/ "How common are planets like Earth? That's been a question astronomers and dreamers have pondered for decades, and now, thanks to the Kepler spacecraft, they have an answer. Will NASA's Ailing planet-Hunting Kepler Spacecraft Get New Mission? http://www.space.com/24197-nasa-kepler-planet-spacecraft-mission-aas223.html "A crucial deadline looms for the team that hopes to get NASA's hobbled Kepler space telescope back in the planet-hunting game." Gliese 667 Cc http://en.wikipedia.org/wiki/Gliese_667C_c "Gliese 667 Cc is an extrasolar planet orbiting around the star Gliese 667 C which is a member of the Gliese 667 triple star system." Watch More: Looking For 2nd Earth http://www.youtube.com/watch?v=Tqe14YJ9mwQ TestTube Wild Card: http://testtube.com/dnews/dnews-536-honey-is-magic?utm_source=YT&utm_medium=DNews&utm_campaign=DNWC Purple Planet = Alien Life http://www.youtube.com/watch?v
03:36
Add to Playlist
Watch Later Added
  • Actions
  • About This Video
NASA's Kepler Space Telescope has discovered the first validated Earth-size planet orbiting in the habitable zone of a distant star, an area where liquid water might exist on its surface. The planet, Kepler-186f, is ten percent larger in size than Earth and orbits its parent star, Kepler-186, every 130 days. The star, located about 500 light-years from Earth, is classified as an M1 dwarf and is half the size and mass of our sun. "April 17, 2014. Using NASA's Kepler Space Telescope, astronomers have discovered the first Earth-size planet orbiting a star in the "habitable zone" -- the range of distance from a star where liquid water might pool on the surface of an orbiting planet. The discovery of Kepler-186f confirms that planets the size of Earth exist in the habitable zone of stars other than our sun. While planets have previously been found in the habitable zone, they are all at least 40 percent larger in size than Earth, and understanding their makeup is challenging. Kepler-186f is more reminiscent of Earth. "The discovery of Kepler-186f is a significant step toward finding worlds like our planet Earth," said Paul Hertz, NASA's Astrophysics Division director at the agency's headquarters in Washington. "Future NASA missions, like the Transiting Exoplanet Survey Satellite and the James Webb Space Telescope, will discover the nearest rocky exoplanets and determine their composition and atmospheric conditions, continuing humankind's quest to find truly Earth-like worlds." Although the size of Kepler-186f is known, its mass and composition are not. Previous research, however, suggests that a planet the size of Kepler-186f is likely to be rocky. "We know of just one planet where life exists -- Earth. When we search for life outside our solar system, we focus on finding planets with characteristics that mimic that of Earth," said Elisa Quintana, research scientist at the SETI Institute at NASA's Ames Research Center in Moffett Field, Calif., and lead author of the paper published today in the journal Science. "Finding a habitable zone planet comparable to Earth in size is a major step forward." Kepler-186f resides in the Kepler-186 system, about 500 light-years from Earth in the constellation Cygnus. The system is also home to four companion planets, which orbit a star half the size and mass of our sun. The star is classified as an M dwarf, or red dwarf, a class of stars that makes up 70 percent of the stars in the Milky Way galaxy. "M dwarfs are the most numerous stars," said Quintana. "The first signs of other life in the galaxy may well come from planets orbiting an M dwarf." Kepler-186f orbits its star once every 130 days and receives one-third the energy from its star that Earth gets from the sun, placing it nearer the outer edge of the habitable zone. On the surface of Kepler-186f, the brightness of its star at high noon is only as bright as our sun appears to us about an hour before sunset. "Being in the habitable zone does not mean we know this planet is habitable. The temperature on the planet is strongly dependent on what kind of atmosphere the planet has," said Thomas Barclay, research scientist at the Bay Area Environmental Research Institute at Ames, and co-author of the paper. "Kepler-186f can be thought of as an Earth-cousin rather than an Earth-twin. It has many properties that resemble Earth." The four companion planets, Kepler-186b, Kepler-186c, Kepler-186d and Kepler-186e, whiz around their sun every four, seven, 13 and 22 days, respectively, making them too hot for life as we know it. These four inner planets all measure less than 1.5 times the size of Earth. The next steps in the search for distant life include looking for true Earth-twins -- Earth-size planets orbiting within the habitable zone of a sun-like star -- and measuring their chemical compositions. The Kepler Space Telescope, which simultaneously and continuously measured the brightness of more than 150,000 stars, is NASA's first mission capable of detecting Earth-size planets around stars like our sun. The SETI Institute is a private, nonprofit organization dedicated to scientific research, education and public outreach. The mission of the SETI Institute is to explore, understand and explain the origin, nature and prevalence of life in the universe. Related Videos: "NASA's Kepler Discovers First Earth-Size Planet In The Habitable Zone of Another Star": http://www.youtube.com/watch?v=2mV7Pg2RO4c "Kepler Discovers First Earth-size Planet " Kepler-186f " in the Habitable Zone of Another Star B-roll": http://www.youtube.com/watch?v=f7lHbXxV0fk "Kepler-186f Animation": http://www.youtube.com/watch?v=bx4ERG6UJTE Article Credit: NASA JPL/PlanetQuest "NASA's Kepler Telescope Discovers First Earth-Size Planet in 'Habitable Zone' ": http://www.jpl.nasa.gov/news/news.php?release=2014-119 Release Date: 17 April 2014 Film Editor: Fabien Labonne. Video Credit: NASA Ames Research Center/The Mars Underground Channel.