Current Asteroid News and Events

Current Asteroid News and Events, Asteroid News Articles.
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Oldest carbonates in the solar system
A meteorite that fell in northern Germany in 2019 contains carbonates which are among the oldest in the solar system; it also evidences the earliest presence of liquid water on a minute planet. The high-resolution Ion Probe - a research instrument at the Institute of Earth Sciences at Heidelberg University - provided the measurements. (2021-01-20)

Dinosaur-era sea lizard had teeth like a shark
New study identifies a bizarre new species suggesting that giant marine lizards thrived before the asteroid wiped them out 66 million years ago. (2021-01-19)

Remote sensing data sheds light on when and how asteroid Ryugu lost its water
Rocks on Ryugu, a 'rubble pile' near-Earth asteroid recently visited by Japan's Hayabusa2 spacecraft, appear to have lost much of their water before they came together to form the asteroid, new research suggests. (2021-01-05)

SwRI-led team finds meteoric evidence for a previously unknown asteroid
A Southwest Research Institute-led team of scientists has identified a potentially new meteorite parent asteroid by studying a small shard of a meteorite that arrived on Earth a dozen years ago. The composition of a piece of the meteorite Almahata Sitta (AhS) indicates that its parent body was an asteroid roughly the size of Ceres, the largest object in the main asteroid belt, and formed in the presence of water under intermediate temperatures and pressures. (2020-12-21)

The Subaru Telescope photographs the next target asteroid for Hayabusa2
On December 10, 2020 (Hawai?i Standard Time), the Subaru Telescope imaged the small asteroid 1998 KY26, the target of Hayabusa2's extended mission. The positional data for 1998 KY26 collected during the observations will be used to more accurately determine the orbital elements of this object. (2020-12-17)

Chance played a major role in keeping Earth fit for life
A study by the University of Southampton gives a new perspective on why our planet has managed to stay habitable for billions of years - concluding it is almost certainly due, at least in part, to luck. The research suggests this may shorten the odds of finding life on so-called 'twin-Earths' in the Universe. (2020-12-14)

Mass extinctions of land-dwelling animals occur in 27-million-year cycle
Mass extinctions of land-dwelling animals--including amphibians, reptiles, mammals, and birds--follow a cycle of about 27 million years, coinciding with previously reported mass extinctions of ocean life, according to a new analysis published in the journal Historical Biology. (2020-12-11)

First presentation after Hayabusa2 mission return set for SPIE conference 14 December
As part of the opening plenary session at the SPIE Astronomical Telescopes + Instrumentation Digital Forum, Hitoshi Kuninaka, of the Japan Aerospace Exploration Agency, will be discussing and responding to audience questions about the successful return of the Hayabusa2 capsule from its asteroid-sample mission, a second-time-in-history-success that marks exciting and innovating advances for the astronomical-instrumentation community. In addition, Kuninaka may have initial information regarding what potential treasures the capsule's sample container holds. (2020-12-10)

Researchers discover a new superhighway system in the Solar System
Researchers have discovered a new superhighway network to travel through the Solar System much faster than was previously possible. Such routes can drive comets and asteroids near Jupiter to Neptune's distance in under a decade and to 100 astronomical units in less than a century. They could be used to send spacecraft to the far reaches of our planetary system relatively fast, and to monitor and understand near-Earth objects that might collide with our planet. (2020-12-09)

Rochester researchers uncover key clues about the solar system's history
Researchers have used magnetism to determine, for the first time, when asteroids that are rich in water and amino acids first arrived in the inner solar system. (2020-12-04)

Gaia space telescope measured the acceleration of the Solar System
The Gaia space telescope has measured the acceleration of the Solar System when it orbits the center of our Milky Way galaxy. The Solar System motion relative to the stars agrees with the results by Finnish astronomers in the 19th century. (2020-12-03)

New analysis refutes claim that dinosaurs were in decline before asteroid hit
New research suggests that dinosaurs were not in decline before the asteroid hit. The study contradicts previous theories and concludes that had the impact not occurred dinosaurs might have continued to be the dominant group of land animals. (2020-11-17)

SwRI scientist studies tiny craters on Bennu boulders to understand asteroid's age
Last week NASA snagged a sample from the surface of asteroid Bennu, an Empire State Building-sized body that Southwest Research Institute scientists have helped map with nearly unprecedented precision. Using orbital data from the OSIRIS-REx spacecraft, researchers measured centimeter- to meter-sized craters on the boulders scattered around its rugged surface to shed light on the age of the asteroid. (2020-11-10)

Researchers present wild theory: Water may be naturally occurring on all rocky planets
Life is deeply dependent on water, but where does water come from? Based on new research, researchers from the University of Copenhagen believe it may emerge in connection with the formation of planets. (2020-11-09)

The craters on Earth
A two-volume atlas presents and explains the impact sites of meteorites and asteroids worldwide (2020-11-03)

Plankton turn hunters to survive dinosaur-killing asteroid impact
New research by an international team of scientists shows how marine organisms were forced to 'reboot' to survive following the asteroid impact 66 million years ago which killed three quarters of life on earth. (2020-10-30)

To survive asteroid impact, algae learned to hunt
Tiny, seemingly harmless ocean plants survived the darkness of the asteroid strike that killed the dinosaurs by learning a ghoulish behavior -- eating other living creatures. (2020-10-30)

Asteroid's scars tell stories of its past
Asteroid Bennu, which was just sampled by NASA's OSIRIS-REx mission, only recently migrated into Earth's neighborhood, according to a detailed analysis of impact marks on boulders on its surface. The report provides a new benchmark for understanding the evolution of asteroids and offers insights into space debris hazardous to spacecraft. (2020-10-30)

Asteroid Ryugu shaken by Hayabusa2's impactor
Professor ARAKAWA Masahiko (Graduate School of Science, Kobe University, Japan) and Hayabusa2 mission members discovered more than 200 boulders, which either newly appeared or moved as a result of the artificial impact crater created by the Japanese spacecraft's Small Carry-on Impactor. Boulders were disturbed within a 30m radius from the impact crater center- providing important insight into asteroids' resurfacing processes. (2020-10-29)

SwRI study offers more complete view of massive asteroid Psyche
A new study authored by Southwest Research Institute planetary scientist Dr. Tracy Becker discusses several new views of the asteroid 16 Psyche, including the first ultra-violet observations. The study, which was published today in The Planetary Science Journal and presented at the virtual meeting of the American Astronomical Society's Division for Planetary Sciences, paints a clearer view of the asteroid than was previous-ly available. (2020-10-26)

OSIRIS-REx TAGs surface of asteroid Bennu
Captured on Oct. 20, 2020 during the OSIRIS-REx mission's Touch-And-Go (TAG) sample collection event, this series of images shows the SamCam imager's field of view as the NASA spacecraft approaches and touches down on asteroid Bennu's surface, over 200 million miles away from Earth. (2020-10-22)

Ultraviolet shines light on origins of the solar system
In the search to discover the origins of our solar system, an international team of researchers, including planetary scientist and cosmochemist James Lyons of Arizona State University, has compared the composition of the sun to the composition of the most ancient materials that formed in our solar system: refractory inclusions in unmetamorphosed meteorites. (2020-10-19)

Sea star's ability to clone itself may empower this mystery globetrotter
The identity of wild cloning sea star larvae has been a mystery since they were first documented in the Caribbean. The most commonly collected cloning species was thought to belong to the Oreasteridae, on the basis of similarity with sequences from Oreaster reticulatus and Oreaster clavatus. (2020-10-12)

Sustainable space management at risk under US-centric policies
''Other nations need to speak up, now,'' argue Aaron Boley and Michael Byers in this Policy Forum, in response to U.S. policymakers' attempts to dominate commercial space mining based on a strategic interpretation of international space law. (2020-10-08)

New findings from OSIRIS-REx detail complex history of Asteroid Bennu
Six new studies in Science and Science Advances present results from the OSIRIS-REx spacecraft and reveal insights about the near-Earth asteroid Bennu. (2020-10-08)

Planetary astronomer co-authors studies of asteroid as member of NASA's OSIRIS-REx mission
NASA's OSIRIS-REx spacecraft mission's first attempt to pick up the sample is scheduled for Oct. 20, 2020, and the spacecraft is scheduled to return the sample back to Earth on Sept. 24, 2023. In advance of the sample collection, the science team published a set of six papers in Science and Science Advances to share its scientific findings to date while building interest in the upcoming event. (2020-10-08)

SwRI scientists study the rugged surface of near-Earth asteroid Bennu
As the days count down to NASA's OSIRIS-REx spacecraft's Touch-And-Go asteroid sample collection attempt, Southwest Research Institute scientists have helped determine what the spacecraft can expect to return from the near-Earth asteroid Bennu's surface. Three papers published online by Science on Oct. 8 discuss the color, reflectivity, age, composition, origin and distribution of materials that make up the asteroid's rough surface. (2020-10-08)

Scientists peer inside an asteroid
New findings from NASA's OSIRIS-REx mission suggest that the interior of the asteroid Bennu could be weaker and less dense than its outer layers--like a crème-filled chocolate egg flying though space. (2020-10-08)

Geoscience: Cosmic diamonds formed during gigantic planetary collisions
Geoscientists from Goethe University have found the largest extraterrestrial diamonds ever discovered - a few tenths of a millimetre in size nevertheless - inside meteorites. Together with an international team of researchers, they have now been able to prove that these diamonds formed in the early period of our solar system when minor planets collided together or with large asteroids. These new data disprove the theory that they originated deep inside planets - similar to diamonds formed on Earth - at least the size of Mercury (PNAS). (2020-09-29)

Ryugu's rocky past
Researchers find evidence that asteroid Ryugu was born out of the possible destruction of a larger parent asteroid millions of years ago. Thanks to the Hayabusa2 spacecraft, the international team was able to study certain surface features in detail. Variations in the kinds of boulders scattered on Ryugu tell researchers about the processes involved in its creation. The study of asteroids including Ryugu informs the study of the evolution of life on Earth. (2020-09-21)

Modern theory from ancient impacts
It is generally accepted that the inner region of the early solar system was subject to an intense period of meteoric bombardment referred to as the late heavy bombardment. However, researchers have found evidence that suggests this period occurred slightly earlier than thought and was less intense but also more prolonged. Such details about this period could impact theories about the early Earth and the dawn of life. (2020-09-15)

SwRI-led study indicates sand-sized meteoroids are peppering asteroid Bennu
A new study published this month in JGR Planets posits that the major particle ejections off the near-Earth asteroid Bennu may be the consequence of impacts by small, sand-sized particles called meteoroids onto its surface as the object nears the Sun. The study's primary author is Southwest Research Institute scientist Dr. William Bottke, who used data from NASA's OSIRIS-REx mission. (2020-09-09)

Where rocks come alive: NASA's OSIRIS-REx observes an asteroid in action
In a special collection of research papers published Sep. 9 in the Journal of Geophysical Research: Planets, the OSIRIS-REx science team reports detailed observations that reveal Bennu is shedding material on a regular basis. (2020-09-09)

How small particles could reshape Bennu and other asteroids
NASA's OSIRIS-REx spacecraft observed tiny bits of material jumping off the surface of the asteroid Bennu. A new study tracks where those particles went. (2020-09-09)

Where rocks come alive: OSIRIS-REx observes an asteroid in action
While studying asteroid Bennu up close, NASA's OSIRIS-REx spacecraft witnessed periodic outbursts of material being kicked up from the surface. A dedicated observation campaign revealed details of the activity and the processes likely causing it: impacts by small space rocks known as meteoroids and rocks cracking from thermal stress as Bennu's surface heats up when exposed to the sun and cools during nighttime. (2020-09-09)

Huge ring-like structure on Ganymede's surface may have been caused by violent impact
Image data reanalysis by researchers from Kobe University and the National Institute of Technology, Oshima College have revealed that ancient tectonic troughs are concentrically distributed across almost the entire surface of Ganymede. Computer simulation results suggest that this giant crater could have resulted from the impact of an asteroid with a 150km radius. If so, this the largest impact structure identified in the solar system so far. (2020-08-07)

Arecibo Observatory returns from tropical storm Isaias lockdown to track asteroid for NASA
Arecibo's Planetary Radar Group quickly shift from storm response to track asteroid 2020 NK1. Before the Arecibo observations, 2020 NK1 was calculated to be one of the biggest threats out of all known asteroids on NASA's list of potential impactors, with about one chance in 70,000 of impacting the Earth between 2086 and 2101. (2020-08-06)

An origin story for a family of oddball meteorites
Study suggests a family of rare meteorites likely came from an early planetesimal with a magnetic core. (2020-07-24)

Asteroid shower on the Earth-Moon system 800 million years ago revealed by lunar craters
A research team led by Osaka University investigated the formation ages of lunar craters to demonstrate that asteroids of 100 km in diameter were disrupted 800 Ma and that at least (4-5)×1016 kg of meteoroids, approximately 30-60 times more than the Chicxulub impact, must have plunged into the Earth-Moon system. (2020-07-21)

Arizona rock core sheds light on triassic dark ages
A rock core from Petrified Forest National Park, Arizona, has given scientists a powerful new tool to understand how catastrophic events shaped Earth's ecosystems before the rise of the dinosaurs. The core offers scientists a foundation to explain the changes in the fossil record and determine how these events may have shaped life on Earth. (2020-07-20)

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