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Smithsonian
October 2006
Robert Irion |
What Makes a Planet? As just about everyone in the solar system knows by now, members of the International Astronomical Union came up with a new definition of planets that leaves Pluto out in the cold.   |
Science News
November 21, 2008
Alan Stern |
Debates Over Definition Of Planet Continue And Inspire The definition of a planet continues to be debated between astronomers and planetary scientists. |
Geotimes
November 2005
Kathryn Hansen |
Two More Moons for Pluto In addition to Pluto's confirmed moon Charon, astronomers have detected two more orbiting celestial bodies, which could help reveal how the planet and moon system formed. |
Science News
February 28, 2009
Ashley Yeager |
Book Review: The Pluto Files: The Rise And Fall Of America's Favorite Planet By Neil DeGrasse Tyson A public outcry occurred when in 2006 the International Astronomical Union kicked Pluto from the planet club, writes astronomer Neil deGrasse Tyson. |
Geotimes
December 2005 |
Highlights 2005 -- Space Rovers still trucking... New "planetary" neighbors... Back to space... |
Geotimes
March 2004 |
Sedna: Newly sighted planetoid in the solar system At the edge of the solar system, astronomers have unexpectedly sighted an object slightly smaller and farther from the Sun than Pluto -- not quite another planet, but not a temporary visitor either. |
Geotimes
March 2006
Kathryn Hansen |
Young Planets Collide Size mattered, astronomers say, when it came to whether or not material in our early solar system stuck together to become today's terrestrial planets. New models suggest that collisions between large objects did not always result in those objects combining, as previously thought. |
Geotimes
December 2006
Kathryn Hansen |
Space: Alien Worlds Finding Earth Analogues in Space: Q&A with planetary scientist David Stevenson. |
Popular Mechanics
October 28, 2009
Karen Rowan |
9 Wildest Exoplanets Ever Spotted A team of European planet hunters has uncovered a bonanza of 32 new exoplanets, planets outside our solar system. |
Geotimes
September 2005
Kathryn Hansen |
Tristar Planet A recent planet found in a triple-star system perplexes astronomers because, according to current models of planetary formation, it should not exist. |
| AskMen.com |
Earth-Like Planet Found Astronomers have finally found a place outside our solar system where there's a firm place to stand -- if only it weren't so broiling hot. |
Smithsonian
October 2006
Robert Irion |
The Planet Hunters Never mind the demotion of Pluto to a dwarf planet. Astronomers have found about 200 planets orbiting other stars, and they say it's only a matter of time before they discover another Earth. |
Geotimes
July 2007
Carolyn Gramling |
Mercury's Gooey Center Mercury, the closest planet to the sun, has a large core, which scientists now know is partially molten and therefore could create a magnetic field around the planet. |
Geotimes
June 2005
Kathryn Hansen |
Orbital Shuffle for Early Solar System The solar system is now full of clues to its past, and astronomers, with the help of computer models, are finding new ways to link together previously unconnected observations to explain how the planetary system came to resemble what it is today. |
InternetNews
August 10, 2005
Tim Gray |
Astronomy, Google-Style Michael Brown, a planetary scientist at the California Institute of Technology, discovered the planet K40506A in 2003. While he had not yet announced his discovery, he accidentally left accessible over Google details that described the planet. |
Wired
April 2001
Tom McNichol |
Beyond Cool NASA cost-cutters want to kill a pioneering probe to the ice-cold edge of the solar system. First they have to reckon with the Pluto Underground... |
Wired
December 2004
Patrick Di Justo |
Mysteries of the Cosmos The top 13 places to explore in outer space. |
Geotimes
March 2006
Naomi Lubick |
Starry Lens A newly discovered planet may be the most Earth-like planet found to date outside our solar system. The discovery confirms the value of a relatively new detection method known as gravitational lensing. |
Geotimes
February 2007 |
Did You Know? "Plutoed" is Word of the Year According to the American Dialect Society, "plutoed" is the 2006 Word of the Year, thanks to the planet's demotion to "dwarf planet" by the International Astronomical Union earlier in the year. |
Salon.com
December 2, 1999
William Speed Weed |
Master of the universe With the existence of six new planets announced just this week, Geoffrey Marcy is racking up "extrasolar" discoveries like Mark McGwire racks up homers. |
| Science News |
TimeLine: June 7, 1930 70 Years Ago in Science News: Comet May Cause Meteoric Display; Pluto's Color; Ashes Found With Sloth Remains |
Geotimes
June 2005
Sara Pratt |
Revising the Asteroid Threat Scale Although scientists still assign Torino Impact Hazard Scale values via the same method, the language used to describe some levels has now changed to better inform the public -- and the media -- of the risk without unintentionally scaring people. |
Science News
January 19, 2002 |
Planet Quest NASA's new Planet Quest Web site offers one-stop shopping for planet discovery news. |
Geotimes
October 2007
Erin Wayman |
Reaching for the Stars in Planet Formation Most known exoplanets orbit stars that appear to be rich in metals. New research suggests these stars may be polluted with metal from planetary debris -- or even a planet -- that collided with the star. |
Science News
March 29, 1930 |
TimeLine: Mar. 29, 1930 Wanted: Early Planet Photographs... Additional Observations... |
Scientific American
June 2009
John Rennie |
Inspirations in Space and Closer to Home Astronomers are finding new planets; humanitarians are improving this one |
Geotimes
July 2004
Jay Chapman |
Sliding into Saturn Late Wednesday night, the Cassini-Huygens spacecraft silently slipped through the outermost rings of Saturn and entered into orbit. By early Thursday morning, Cassini began transmitting strikingly elegant close-up images of Saturn's rings. |
Scientific American
November 7, 2005
Mark Alpert |
Red Star Rising Small, cool stars may be hot spots for life |
Chemistry World
July 27, 2015
Katrina Kramer |
A space traveller's guide to the solar system Mark Thompson will take you on a holiday around our solar system in his new book, A space traveler's guide to the solar system -- a journey that promises to be both terrifying and awe-inspiring. |
Chemistry World
September 30, 2011
Jon Cartwright |
Messenger Sheds Light on Mercury's Formation NASA's Messenger spacecraft is bringing new understanding to the question of how Mercury formed. The new information looks set to rewrite theories about the birth of the solar system's smallest planet. |
Chemistry World
July 3, 2015
Rebecca Trager |
New Horizons detects methane on Pluto The infrared spectrometer on board NASA's Pluto-bound New Horizons spacecraft has detected frozen methane on the dwarf planet's surface. |
Science News
December 23, 2000 |
TimeLine: December 20, 1930 70 Years Ago in Science News: Arachne Provides Lovelier Festoons For Christmas Tree... Astronomers Find Pluto as Massive as Earth... dr. Hubble Finds Galaxies Evenly Scattered in Space... |
IEEE Spectrum
March 2007
Mark Anderson |
Planet Hunters Wanted The rate of extrasolar planet discoveries could mount not by building new planet-finding telescopes or satellites, but by marshalling an army of amateur astronomers and enthusiasts along with their personal computers. |
Science News
March 22, 1930 |
TimeLine: Mar. 22, 1930 70 Years Ago in Science News: The Sun'S New Trans-Neptunian Planet... Black As Coal, Dense As Zinc... Naming The Planet |
Popular Mechanics
July 2007
Noah Shachtman |
How NASA's New Telescope Chases Planets NASA is launching its first-ever planet-hunting mission next year, sending the Kepler spacecraft on a quest to find 1000 more planets -- and 50 new Earths. |
IEEE Spectrum
January 2008
Barry E. DiGregorio |
No Asteroid Impact on Mars After All The expected asteroid impact would have let scientists study crater formation and underlying Martian geology. |
Chemistry World
May 25, 2011
Simon Hadlington |
Mars is the planet that never grew up Scientists in the US have analysed isotopes in meteorites that resemble Martian geology and have discovered that the planet stopped growing while its solar system siblings carried on developing. |
Wired
June 2001
Oliver Morton |
Shadow Science Looking for Earth-like planets outside the solar system? Bill Borucki's cheap little spacecraft can help you find a few hundred, fast... |
Scientific American
September 2008
David Appell |
The Sun Will Eventually Engulf Earth--Maybe Researchers debate whether Earth will be swallowed by the sun as it expands into a red giant billions of years from now |
Chemistry World
February 25, 2014
Sophie Nixon |
Astrobiology: a very short introduction This book, by David Catling, covers all areas of the subject, from the difficulties of defining life, to the search for Earth-like planets. |
Popular Mechanics
January 7, 2010
Adam Hadhazy |
Kepler's Hunt for Earths Shows Progress at Space Conference Scientists for NASA's exoplanet-hunting Kepler mission report that the orbiting space telescope has nabbed five new worlds, the first several of many that astronomers hope it will eventually discover. |
IEEE Spectrum
March 2009
Anna Bogdanowicz |
NASA Planet Hunter to Search Out Other Earths The Kepler satellite, scheduled to launch this month, will spend more than three years hunting for planets that might support life |
Smithsonian
July 2007
Eric Jaffe |
Life Beyond Earth An ocean on Mars. An Earth-like planet light years away. The evidence is mounting, but are astronomers ready to say we're not alone? |
Geotimes
May 2004
Sara Pratt |
Deciphering Planetary Magnetism Neptune and Uranus both have unusual magnetic fields that tilt at a 60-degree angle toward their equators. Scientists are now able to model the processes that shape the planets' magnetism. |
Popular Mechanics
November 19, 2009
Stephen Ornes |
This Is Not Your Grade School Solar System: Gallery What has changed in solar system imagery over the past few decades and what we can learn from it |
Wired
November 2002
Richard Martin |
The Planet Seekers Giant ground-based telescopes and adaptive optics have brought a new age in astronomy. Now the field's brightest stars are racing to take the first photograph of another world. |
Science News
April 19, 1930 |
TimeLine: Apr. 19, 1930 70 Years Ago in Science News: Travel to The Moon by The Year 2050... Planet Possibly Not Object Predicted... Ant Gestures Have Chemical Cause... |
Geotimes
August 2004
Naomi Lubick |
Slow Boat to a Small Planet For the first time in more than three decades, scientists are going to get a close-up view of Mercury, Earth's smallest neighbor and the rocky planet closest to the sun. |
IEEE Spectrum
April 2012
Gregory L. Matloff |
Deflecting Asteroids A solar sail could use light to nudge an earthbound rock into an orbit we could live with |
Salon.com
June 29, 2001
Suzy Hansen |
We've got company Astronomer David Darling talks about the controversial science of astrobiology and the near-certainty that extraterrestrial life forms exist in our solar system... |
