News About Asteroids And Comets
March 24, 2017
The many faces of Rosetta's comet 67P
Pasadena CA (JPL) Mar 23, 2017
Images returned from the European Space Agency's Rosetta mission indicate that during its most recent trip through the inner solar system, the surface of comet 67P/Churyumov-Gerasimenko was a very active place - full of growing fractures, collapsing cliffs and massive rolling boulders. Moving material buried some features on the comet's surface while exhuming others. "As comets approach the Sun, they go into overdrive and exhibit spectacular changes on their surface," said Ramy El-Maarry, study le ... read more

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Warped Meteor Showers Hit Earth at All Angles
Some meteor showers persist for weeks and months, even though Earth sweeps a big arc around the Sun during that time. The meteors arrive from a slightly different direction each day, which is a clue ... more
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Mechanism underlying size-sorting of rubble on asteroid Itokawa revealed
In 2005, the Hayabusa spacecraft developed by the Japan Aerospace Exploration Agency (JAXA) landed on Itokawa, a small near-Earth asteroid named after the famous Japanese rocket scientist Hideo Itok ... more
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Earth is bombarded at random, crater study shows
New analysis of Earth's myriad craters turned up no evidence of an impact pattern. Earth is bombarded at random, the research shows. ... more
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Long-Lasting Cryovolcanism on Dwarf Planet Ceres
Among the most striking features on the surface of Ceres are the bright spots in the center of Occator crater, which stood out already as NASA's space probe Dawn approached the dwarf planet. Scienti ... more
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Dawn Identifies Age of Ceres' Brightest Area
The bright central area of Ceres' Occator Crater, known as Cerealia Facula, is approximately 30 million years younger than the crater in which it lies, according to a new study in the Astronomical J ... more
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Earth is bombarded at random
Do mass extinctions, like the fall of the dinosaurs, and the formation of large impact craters on Earth occur together at regular intervals? "This question has been under discussion for more than th ... more
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Asteroid Split in Two and, Years Later, Developed Tails
Asteroids on the main belt, situated between Mars and Jupiter, move around the Sun in quasi circular orbits, so they do not undergo the temperature changes which, in comets, produce the characterist ... more
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NASA study hints at possible change in water 'fingerprint' of comet
A trip past the sun may have selectively altered the production of one form of water in a comet - an effect not seen by astronomers before, a new NASA study suggests. Astronomers from NASA's Goddard ... more
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Researchers aim to measure risk of exploding asteroids
As 2013's Chelyabinsk meteor proved, an asteroid doesn't have to make direct contact with Earth's surface to do considerable damage. ... more
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Surprising Dunes on Comet Chury
Surprising images from the Rosetta spacecraft show the presence of dune-like patterns on the surface of comet Chury. Researchers at the Laboratoire de Physique et Mecanique des Milieux Heterogenes ( ... more
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Dawn discovers evidence for organic material on Ceres
NASA's Dawn mission has found evidence for organic material on Ceres, a dwarf planet and the largest body in the main asteroid belt between Mars and Jupiter. Scientists using the spacecraft's visibl ... more
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Origin of spooky meteor noises reappraised by researchers
When a meteor is about to conk your neighborhood and gives fair warning by emitting sizzling, rustling and hissing sounds as it descends, you might think that the universe is being sporting. B ... more
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New data about 2 distant asteroids give a clue to the possible 'Planet Nine'
In the year 2000 the first of a new class of distant solar system objects was discovered, orbiting the Sun at a distance greater than that of Neptune: the "extreme trans Neptunian objects (ETNOs). T ... more
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Minor planet named Bernard
A minor planet in the Solar System will officially be known as Bernardbowen after Australian citizen science project theSkyNet won a competition to name the celestial body. The minor planet wa ... more
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SwRI scientist studies geology of Ceres to understand origin of organics
NASA's Dawn spacecraft recently detected organic-rich areas on Ceres. Scientists evaluated the geology of the regions to conclude that the organics are most likely native to the dwarf planet. Data f ... more
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Arecibo Observatory captures revealing images of Comet 45P/Honda-Mrkos-Pajdusakova
Though not visible to the naked eye or even with binoculars, the green-tailed Comet 45P/Honda-Mrkos-Pajdusakova (HMP) did not escape the gaze of the world-renowned Arecibo Observatory. Scientists fr ... more
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Asteroid resembles dungeons and dragons dice
Radar images of asteroid 2017 BQ6 were obtained on Feb. 6 and 7 with NASA's 70-meter (230-foot) antenna at the Goldstone Deep Space Communications Complex in California. They reveal an irregular, an ... more
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NASA's OSIRIS-REx takes its first image of Jupiter
This magnified, cropped image showing Jupiter and three of its moons was taken by NASA's OSIRIS-REx spacecraft's MapCam instrument during optical navigation testing for the mission's Earth-Trojan As ... more
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NASA's OSIRIS-REx Begins Earth-Trojan Asteroid Search
A NASA spacecraft begins its search Thursday for an enigmatic class of near-Earth objects known as Earth-Trojan asteroids. OSIRIS-REx, currently on a two-year outbound journey to the asteroid Bennu, ... more
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Russian scientists find 13kg of meteorites in Iranian Desert
A team of Russian geologists from Ural Federal University recently returned from an expedition in the Lut desert in the east of Iran. The team found 13 kilograms of meteorite-like material. Sputnik ... more
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Earth Narrowly Dodges Three Large Asteroids
A car-sized asteroid narrowly missed the Earth on Monday, January 30, six days after another asteroid the size of a house had a similar near-miss, and ten days after a third passed by that was about ... more
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New research shows Ceres may have vanishing ice volcanoes
A recently discovered solitary ice volcano on the dwarf planet Ceres may have some hidden older siblings, say scientists who have tested a likely way such mountains of icy rock - called cryovolcanoe ... more
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Objective: To deflect asteroids, thus preventing their collision with Earth
An international project, led by Spain's National Research Council, (CSIC) provides information on the effects a projectile impact would have on an asteroid. The aim of the project is to work out ho ... more
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An urban collection of modern-day micrometeorites
More than 100 billion micrometeorites (MMs) fall to Earth each year. Until now, scientists believed that these particles could only be found in the cleanest environments, such as the Antarctic. In t ... more
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