News About Asteroids And Comets
June 11, 2017
Rosetta finds comet connection to Earth's atmosphere
Paris (ESA) Jun 12, 2017
The challenging detection, by ESA's Rosetta mission, of several isotopes of the noble gas xenon at Comet 67P/Churyumov-Gerasimenko has established the first quantitative link between comets and the atmosphere of Earth. The blend of xenon found at the comet closely resembles U-xenon, the primordial mixture that scientists believe was brought to Earth during the early stages of Solar System formation. These measurements suggest that comets contributed about one fifth the amount of xenon in Earth's a ... read more

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High-pressure experiments solve meteorite mystery
With high-pressure experiments at DESY's X-ray light source PETRA III and other facilities, a research team around Leonid Dubrovinsky from the University of Bayreuth has solved a long standing riddl ... more
Scientists solve meteorite mystery with high-pressure X-ray experiments
Scientists have long struggled to understand how different types of silica, which require distinction formation conditions, are commonly found in the same meteorite. ... more
NASA's Asteroid-Hunting Spacecraft a Discovery Machine
NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission has released its third year of survey data, with the spacecraft discovering 97 previously unknown celestial objects in ... more
Inspiration Links The Beatles, a Fossil and a NASA Mission
Fifty years ago, The Beatles released their album 'Sgt. Pepper's Lonely Hearts Club Band,' which included the iconic song "Lucy In The Sky With Diamonds." The popular song was critically acclaimed f ... more
First 24-hour Global Broadcast About Asteroid Impact Hazard
On June 30, asteroids will make history as the focus of a conversation shared around the world on the first ever global 24-hour broadcast about space and the role of asteroids in our solar system. ... more
'Tiny clocks' crystallize understanding of meteorite crashes
Almost two billion years ago, a 10-kilometre-wide chunk of space slammed down into rock near what is now the city of Sudbury. Now, scientists from Western University and the University of Portsmouth ... more
NASA Moves Up Launch of Psyche Mission to a Metal Asteroid
Psyche, NASA's Discovery Mission to a unique metal asteroid, has been moved up one year with launch in the summer of 2022, and with a planned arrival at the main belt asteroid in 2026 - four years e ... more
Movie Shows Ceres at Opposition from Sun
NASA's Dawn spacecraft successfully observed Ceres at opposition on April 29, taking images from a position exactly between the sun and Ceres' surface. Mission specialists had carefully maneuvered D ... more

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The Aerospace Corporation leads Asteroid Impact Exercise at IAA in Tokyo
Dr. William Ailor, Aerospace Fellow at The Aerospace Corporation (Aerospace), will lead a realistic asteroid impact threat exercise at the 2017 International Academy of Astronautics (IAA) Planetary ... more
Twisting an Asteroid
Scientists and engineers from all over the world will gather from 15 to 19 May in Tokyo, Japan, at the 5th Planetary Defence Conference (PDC) to discuss the threat posed by asteroids and comets. ... more
Oldest buckthorn fossilized flowers found in Argentina
Around 66 million years ago, at the end of the Cretaceous period, a giant asteroid crashed into the present-day Gulf of Mexico, leading to the extinction of the non-avian dinosaurs. How plants were ... more
Caltech: Chemical Engineer Explains Oxygen Mystery on Comets
A Caltech chemical engineer who normally develops new ways to fabricate microprocessors in computers has figured out how to explain a nagging mystery in space - why comets expel oxygen gas, the same ... more
Falkland Islands basin shows signs of being among world's largest craters
A basin in the Falkland Islands exhibits traits of a large impact crater, according to a new analysis by a team of scientists. The structure measures approximately 250 kilometers, or more than 150 m ... more
Chemical engineer explains why comets expel oxygen
Like trees, comets expel gas. But until now, researchers weren't exactly sure why. ... more
Ancient meteorite impact sparked long-lived volcanic eruptions on Earth
Meteorite impacts can produce more than craters on the Earth - they can also spark volcanic activity that shapes its surface and climate by bringing up material from depth. That is the Ancient meteo ... more
Dawn Observing Ceres; 3rd Reaction Wheel Malfunctions
NASA's Dawn spacecraft is preparing to observe Ceres on April 29 from an "opposition" position, directly between the dwarf planet's mysterious Occator Crater and the sun. This unique geometry may yi ... more

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New study ranks hazardous asteroid effects from least to most destructive
If an asteroid struck Earth, which of its effects - scorching heat, flying debris, towering tsunamis - would claim the most lives? A new study has the answer: violent winds and shock waves are the m ... more
Landslides on Ceres Reflect Ice Content
As NASA's Dawn spacecraft continues exploring Ceres, evidence mounts that the enigmatic dwarf planet retains a significant amount of water ice. A new study in the journal Nature Geoscience adds to t ... more
Close call: When asteroids whisk past Earth
A peanut-shaped asteroid 1.3 kilometres (3,280 feet) across streaked past Earth on Wednesday, giving astronomers a rare chance to check out a big space rock up close. ... more
NASA images Asteroid 2014 JO25 using radar prior to flyby
Radar images of asteroid 2014 JO25 were obtained in the early morning hours on Tuesday, with NASA's 70-meter (230-foot) antenna at the Goldstone Deep Space Communications Complex in California. The ... more
Big space rock to streak past Earth on Wednesday
An asteroid stretching 650 metres (2,000 feet) across is on track to whoosh past Earth on Wednesday at a safe - but uncomfortably close - distance, according to astronomers. ... more
NASA team explores using LISA Pathfinder as 'comet crumb' detector
LISA Pathfinder, a mission led by ESA (the European Space Agency) with contributions from NASA, has successfully demonstrated critical technologies needed to build a space-based observatory for dete ... more
High-flying experiments demonstrate potential of balloon-borne infrasound detection
Experiments conducted high in the skies over New Mexico suggest that balloon-borne sensors could be useful in detecting the infrasound signals generated by small, extraterrestrial debris entering Ea ... more
Large asteroid to hurtle past Earth on April 19
An asteroid as big as the Rock of Gibraltar will streak past Earth on April 19 at a safe but uncomfortably close distance, according to astronomers. ... more
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