News About Asteroids And Comets
September 01, 2017
Close encounters of the stellar kind
Paris (ESA) Sep 01, 2017
The movements of more than 300 000 stars surveyed by ESA's Gaia satellite reveal that rare close encounters with our Sun might disturb the cloud of comets at the far reaches of our Solar System, sending some towards Earth in the distant future. As the Solar System moves through the Galaxy, and as other stars move on their own paths, close encounters are inevitable - though 'close' still means many trillions of kilometres. A star, depending on its mass and speed, would need to get within abou ... read more

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Largest asteroid in a century to whiz by Sept 1
The largest asteroid in more than a century will whiz safely past Earth on September 1 at a safe but unusually close distance of about 4.4 million miles (7 million kilometers), NASA said. ... more
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Backyard Observers Ready to View Asteroid's Close Flyby
When astronomer Bobby Bus discovered an asteroid passing through the inner solar system on March 2, 1981, it was bright enough to record in his telescope's photos despite being more than 145 million ... more
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House-Sized Near-Earth Objects Rarer Than We Thought
n 2013 a small meteoroid, the size of a house, hurtled through Earth's atmosphere and exploded over the Russian city of Chelyabinsk. The explosion shattered windows, and more than a thousand people ... more
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NASA's asteroid sample return mission successfully adjusts course
NASA's OSIRIS-REx spacecraft fired its thrusters to position itself on the correct course for its upcoming Earth flyby. The spacecraft, which is on a two-year outbound journey to asteroid Bennu, suc ... more
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Phoenicid meteor shower from dead comet arises again after 58 years
The Phoenicid meteor shower (named after the constellation Phoenix) was discovered by the first Japanese Antarctic Research Expedition on December 5, 1956, during their voyage in the Indian Ocean. H ... more
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Dino-killing asteroid could have thrust Earth into 2 years of darkness
Tremendous amounts of soot, lofted into the air from global wildfires following a massive asteroid strike 66 million years ago, would have plunged Earth into darkness for nearly two years, new resea ... more
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Large asteroid to safely pass Earth on September 1
Asteroid Florence, a large near-Earth asteroid, will pass safely by Earth on Sept. 1, 2017, at a distance of about 4.4 million miles, (7.0 million kilometers, or about 18 Earth-Moon distances). ... more
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Asteroid Apophis has One in 100,000 chance of hitting Earth
The huge nearly 400-meter wide asteroid Apophis is still on a list of hazardous near-Earth objects (NEOs), regarded as a potential threat to our planet. However, new calculations made by NASA's Jet ... more

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Asteroid 2012 TC4 will fly past Earth in October 2017
A small asteroid flying past Earth on 12 October will provide scientists with a valuable opportunity to learn more about its orbit and composition. The campaign will exercise the international netwo ... more
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How to watch this weekend's Perseid meteor shower
Skywatchers in the Northern Hemisphere will be treated to a show of shooting stars on Friday and Saturday night as the Perseid meteor shower peaks over the weekend. ... more
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Asteroid to shave past Earth on Oct 12: ESA
A house-sized asteroid will shave past our planet on October 12, far inside the Moon's orbit but without posing any threat, astronomers said Thursday. ... more
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SwRI part of international team identifying primordial asteroids
Southwest Research Institute (SwRI) was part of an international team that recently discovered a relatively unpopulated region of the main asteroid belt, where the few asteroids present are likely p ... more
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Supernova-Hunting Team Finds Comet with Aid of Amateur Astronomer
Carnegie's Benjamin Shappee is part of a team of scientists, including an Australian amateur astronomer, which discovered a new comet last week. Called the All Sky Automated Survey for Superno ... more
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Asteroid Flyby Will Benefit NASA Detection and Tracking Network
NASA scientists are excited about the upcoming close flyby of a small asteroid and plan to use its upcoming October close approach to Earth as an opportunity not only for science, but to test NASA's ... more
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Upcoming asteroid flyby will help Planetary Defense Network
For the first time, NASA will use an actual space rock for an observational campaign to test NASA's network of observatories and scientists who work with planetary defense. The asteroid, named 2012 ... more
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Exploring an unusual metal asteroid
Lindy Elkins-Tanton '87, SM '87, PhD '02 is reaching for the stars - literally. She is the principal investigator for Psyche, a NASA mission that will explore an unusual metal asteroid known as 16 P ... more

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Large, Distant Comets More Common Than Previously Thought
Comets that take more than 200 years to make one revolution around the Sun are notoriously difficult to study. Because they spend most of their time far from our area of the solar system, many "long ... more
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Ancient, massive asteroid impact could explain Martian geological mysteries
The origin and nature of Mars is mysterious. It has geologically distinct hemispheres, with smooth lowlands in the north and cratered, high-elevation terrain in the south. The red planet also has tw ... more
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Pitted Materials in Craters Could Indicate Buried Ice on Asteroids
Pitted terrains inside fresh complex craters on Ceres are similar to terrains seen Mars and Vesta, and are likely formed through the rapid evaporation of subsurface H2O, a new paper by Planetary Sci ... more
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Bizarro comet challenging researchers
Scientists pursue research through observation, experimentation and modeling. They strive for all of these pieces to fit together, but sometimes finding the unexpected is even more exciting. That's ... more
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NASA'S First Asteroid Deflection Mission Enters Next Design Phase
The first-ever mission to demonstrate an asteroid deflection technique for planetary defense - the Double Asteroid Redirection Test (DART) - is moving from concept development to preliminary design ... more
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Are asteroids humanity's 'greatest challenge'?
Throughout its 4.5-billion-year history, Earth has been repeatedly pummelled by space rocks that have caused anything from an innocuous splash in the ocean to species annihilation. ... more
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NASA is building computer models of possible asteroid impact scenarios
NASA scientists are using one of the agency's most powerful supercomputers to build 3D models of potential asteroid impact scenarios. ... more
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How a Speck of Light Becomes an Asteroid
On the first day of the year 1801, Italian astronomer Gioacchino Giuseppe Maria Ubaldo Nicolo Piazzi found a previously uncharted "tiny star" near the constellation of Taurus. The following night Pi ... more
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