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Geotimes
May 2005
Megan Sever |
Meteor Crater's Slow Impact New findings suggest that rather than one large meteorite striking the ground at a high velocity, a lower velocity, pancake-shaped swarm of meteorite pieces -- formed from the explosion a larger meteorite -- likely carved out Meteor Crater.   |
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
January 2004
Megan Sever |
Unraveling the Chicxulub Case On the Yucatan Peninsula in Mexico, geologists are drilling one of Earth's three largest impact structures, hoping to reveal clues about a devastating event linked to the extinction of the dinosaurs 65 million years ago. |
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. |
Geotimes
July 2005
McFadden & Schultz |
Collision Course: Deep Impact The Deep Impact project will shed light on some fundamental scientific questions about comets, including what they are made of and how they formed. |
Geotimes
January 2006
Megan Sever |
Sizing up a Crater New modeling of the impact of an Eocene extraterrestrial projectile in what is now the Chesapeake Bay shows that it was smaller than previously thought, and could help better predict the effects of future potential impacts. |
Smithsonian
December 2006
Eric Jaffe |
Clues from a Comet The first mission to collect space matter from beyond the moon offers insights into the solar system's creation. |
Geotimes
January 2005
Naomi Lubick |
Bombing a Comet Yesterday at 1:47 p.m. EST, NASA successfully launched a rocket from Cape Canaveral, Fla., carrying the Deep Impact spacecraft toward its rendezvous with a comet. |
Geotimes
March 2004
Megan Sever |
Wisconsin crater revealed In 1942, mappers doing reconnaissance work first noticed an anomalous geologic structure in western Wisconsin. Now geologists have determined that the feature is a 430- to 445-million-year-old meteorite impact structure. |
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. |
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. |
Scientific American
May 8, 2006
Graham P. Collins |
Chaos in the Crater Welcome to the Vredefort Crater, a real Bermuda Triangle about 100 kilometers southwest of Johannesburg. It is the oldest and largest impact remnant on the planet, created by an asteroid about two billion years ago. |
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 |
Geotimes
July 2005
Lisa Pinsker |
Deep Impact Strikes Back The scientists at NASA's Jet Propulsion Laboratory (JPL) cheered yesterday as they received confirmation that the Deep Impact probe successfully hit its target, comet Tempel 1, after six months' and hundreds of millions of miles' worth of journey. |
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 13, 2012
Simon Hadlington |
Where did Earth's water come from? One big question that remains unanswered about the evolution of the early Earth is how volatiles such as hydrogen, nitrogen and carbon arrived -- their presence being crucial to the origins of water and life. |
Geotimes
September 2006
Kathryn Hansen |
Opportunity Reaches Martian Crater Cameras aboard NASA's Mars rover Opportunity captured the vast expanse of Victoria crater. |
Geotimes
November 2005
Kathryn Hansen |
Comet Full of Fluff Investigations will turn up many clues as researchers have only started to sift through the data uncovered from the Deep Impact crater. |
Popular Mechanics
January 18, 2008
Jennifer Bogo |
Inside NASA's Mega Flyby of Mercury's Dark Side NASA's new Messenger spacecraft will conduct a full scientific investigation of Mercury's surface. |
Geotimes
July 2004
Megan Sever |
Possible P/T Impact Crater A group of scientists now says they have uncovered a crater that may be responsible for the mass extinction at the end of the Permian, and their results are inciting a new flurry of controversy. |
Scientific American
May 16, 2005
Barry E. DiGregorio |
Doubts on Dinosaurs Yucatan impact crater may have occurred before the dinosaurs went extinct. |
IEEE Spectrum
June 2009
William Stone |
Mining the Moon How the extraction of lunar hydrogen or ice could fuel humanity's expansion into space |
Geotimes
December 2005
Kathryn Hansen |
New View of a Saturnian Moon More than 250 years after astronomers first discovered Saturn's moon Hyperion, the odd celestial body is still presenting surprises. A closer-than-ever view of the moon revealed a heavily cratered surface, which looks remarkably like a sponge. |
Geotimes
February 2007
Kathryn Hansen |
Water Responsible for Martian Landscape? The remnants of a recent debris flow turned up in photos of a gully on Mars. Some researchers speculate the flow could imply the presence of water, while others think it resulted from a dry, granular flow. |
Geotimes
January 2004
C. Wylie Poag |
Coring the Chesapeake Bay Impact Crater An extraterrestrial impact 36 million years ago left a lasting impression in the Chesapeake Bay and continues to affect the region's environment today. |
Popular Mechanics
November 13, 2009
Jeremy Jacquot |
NASA Confirms There is Water on the Moon--But Where Did It Come From? By obtaining core samples like the ice cores collected by scientists in the Antarctic, it will be possible for scientists to study the climatic record of the moon and draw comparisons with the Earth's. |
Geotimes
October 2006
Kathryn Hansen |
Debate Continues Over Dinosaur Demise Analysis of new core samples support previous research from that the Chicxulub meteor struck about 300,000 years prior to the K/T extinction event and, therefore, did not cause extinction of the dinosaurs. |
| AskMen.com |
NASA To Bomb The Moon A pair of unmanned science probes will help determine where astronauts could land and set up camp in years to come. |
