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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.
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.
Geotimes October 2006 Kathryn Hansen	Planets Redefined: Pluto Gets Demoted Members of the International Astronomical Union voted to demote Pluto, and to give the asteroid Ceres a promotion. Arriving at this new system, however, was not without controversy among astronomers, the public and even geologists.
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 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.
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.
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 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.
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
Wired December 2004 Patrick Di Justo	Mysteries of the Cosmos The top 13 places to explore in outer space.
Geotimes January 2004 Richard P. Binzel	Asteroid Futures The efforts to locate large asteroids that might impact Earth, and what could be done if a threat was found.
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.
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.
Popular Mechanics December 2006 David Noland	The Threat is Out There More than 100,000 asteroids hurtle past our planet. But only one -- that we know of -- may hit us in the next 30 years.
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...
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.
Geotimes July 2004 Sara Pratt	Core Compositions Scientists are working to explain the differences in composition between Earth and Mars.
Chemistry World November 3, 2014 Tim Wogan	Earth ripe for life soon after formation There has been water on Earth since shortly after it formed, say researchers from the US, who compared the deuterium to hydrogen ratios in water on Earth and from the Vesta asteroid belt.
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.
Chemistry World January 23, 2012 Steve Down	Asteroid Ages United by New Isotope Standard Meteorites derived from hydrous asteroids suggest that these space bodies formed later than other asteroids.
Chemistry World April 15, 2010 Lewis Brindley	Mars meteor gets a boost of youth A Martian meteorite that has played a pivotal role in our understanding of the Solar System has been found to be half a billion years younger than previously thought, say US researchers.
Science News March 27, 2004 Ivars Peterson	Pinpointing Killer Asteroids Astronomers have identified more than 230,000 asteroids in orbit around the sun, and the number is increasing daily. Some of these objects are on courses that could lead to a collision with Earth. If the asteroid is sufficiently large, the results could be catastrophic.
Wired December 2004 Frank Drake	The E.T. Equation, Recalculated Fifty years ago, those of us who dreamed about finding extraterrestrials thought we knew where to look: planets with temperatures somewhere between the freezing and boiling points of water.
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.
Chemistry World August 2009 Richard Corfield	One giant leap NASA's Apollo missions answered many questions about the Moon - and as NASA unveils plans to return, lunar chemistry will again play a prominent role
Popular Mechanics October 9, 2008 Thomas D. Jones	Why the World Needs Asteroid Insurance: Resident Astronaut Meteors, or bolides, strike Earth routinely, part of the hundred tons or so of cosmic debris that rain down on us every day. We orbit the Sun in a cosmic shooting gallery
Science News January 17, 2004 Ivars Peterson	Extreme Tides If Earth had been somewhat larger, it's possible that it would not have survived tides induced by its moon or even by an encounter with a passing asteroid. That's one scenario suggested by a recent investigation of a venerable equation that serves as a model for planetary tidal effects.
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
Geotimes May 2003 Lisa M. Pinsker	Molten martian core The more researchers study Mars, the more similarities they seem to find between the Red Planet and Earth. The latest parallels come from the planet's enigmatic interior.
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.
IEEE Spectrum August 2007 Barry E. DiGregorio	China Reaches For the Red Planet A joint project with Russia anticipates retrieving soil from the Martian moon Phobos.
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
Fast Company Pavithra Mohan	NASA's New Office Wants To Save Earth From Asteroids In a move that could easily double as a plotline in a sci-fi flick, NASA has created a task force that will be charged with scouting for asteroids and other potentially devastating threats to planet Earth.
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
National Defense February 2016 Stew Magnuson	Planetary Defense: A New Hot Market With little fanfare, NASA in January opened up its planetary defense coordination office with a mandate to identify potential chunks of rock hurdling toward Earth and to stop them if possible.
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 April 6, 2011 Mike Brown	Mars chemistry reveals how red planet cooled The chemistry of volcanic rock on Mars offers a picture of the thermal history of the planet, according to scientists in France. The findings could provide a reference point for the evolution of other planets, they say.
Popular Mechanics December 3, 2008 Glenn Harlan Reynolds	Why I Hope There's No Life on Mars If Mars is lifeless, that will make exploring -- and later settling -- the planet much easier.
Science News March 29, 1930	TimeLine: Mar. 29, 1930 Wanted: Early Planet Photographs... Additional Observations...
Science News February 17, 2001	TimeLine: February 14, 1931 From The February 14, 1931 Issue: Small Changes of Sun's Heat Control Weather on Earth... Synthetic Petroleum Teaches About Oil Formation in Earth... Eros, Unlike Large Planets, Has Elliptical Outline...
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.
Popular Mechanics September 2006	Scientists Are Finding Life In Earth's Coldest, Hottest, Weirdest Places By creating an alternative life chemistry in the lab, astrobiologist Steven Benner hopes to uncover a formula for alien microbes. How five big questions about life on our planet are shaping the search for it on other worlds.
Geotimes December 2005	Highlights 2005 -- Space Rovers still trucking... New "planetary" neighbors... Back to space...
Chemistry World August 25, 2011 Simon Hadlington	Meteorites Are a Chip Off the Old Asteroid Block New findings confirm that the most common type of meteorite found on Earth derive from so-called stony or S-type asteroids.
National Defense July 2010 Stew Magnuson	Taking Out the Trash: What Can Be Done About Space Debris? What goes up doesn't necessarily come down when it comes to manmade objects orbiting the planet.
Science News September 20, 2003	More Mars -- Better than Ever On Aug. 27, Mars and Earth were closer to each other than at any other time in the last 50,000 years. Even as Earth and Mars slowly draw apart, the Red Planet remains a dazzling sight in the night sky. There's still time to take in the view.
Chemistry World April 28, 2010 Phillip Broadwith	Frosty asteroid surprises astronomers Water and organic molecules on Earth could have been brought here by impacting asteroids and comets, say two groups of US astronomers.
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.
Wired December 2004 Kim Stanley Robinson	Taming the Red Planet Terraforming Mars - grafting an Earth-like atmosphere and ecology onto that rocky and poisonous planet - remains a great idea that is likely to become one of the supreme engineering projects of humankind.
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...